Good afternoon Pastor David. Hey John. Welcome everybody to a random moment with Pastor David Unfiltered. Pastor last Wednesday you started a series on spiritual warfare. Isn't that fun? It's been warfare ever since Ephesians chapter 6 and I'm looking forward to the study tomorrow because you're going to start looking at the weapons. But you know one of the things that's interesting is when you pointed out last week that when we think of spiritual warfare sometimes we think it's this big dragon that we're fighting or it's the the big demon or a lion jumping out in front of us and when reality you know it can be a number of things it could be our flesh it can be it can be a number of different things but you mentioned that it can be the smallest thing and and you were sharing that last week that this battle that we have is warfare that we go through it's a wrestle and that wrestle seems like it speaks of close hand-to-hand combat and and so our fight with this spiritual realm is not only just the big big demons and stuff it's the everyday battles that we go through that is a close quarters fighting yeah and so when we look at this God you spoke a little bit about the whole armor of God it talks about when we put this armor on the next thing we're to do is stand how does that happen when we're in this wrestle this close contact of this battle we have this armor you're going to be introducing the belt of truth but yet we're to stand yeah it's a girdle something you'd be familiar with to God the girdle of truth yeah um when paul is speaking of that like i was mentioning to the church as we've been going through Ephesians you know we are it is broken into the three words sit walk stand and i was reminding our our fellowship of the first three chapters being seated in christ in heavenly places and the things that that relates to and then we go into the fourth chapter and we begin to speak of the walk of the believer because the walk of the believer is always going to be built on foundationally by who we are we're seated in christ you know so knowing who we are prepares us to walk as those who know who we are in christ etc but we also have warfare and the warfare sit walk stand the warfare comes you know after being seated after our walk and then he reminds us of the fact that we're in a spiritual battle so yeah we were not against flesh and blood but against principalities and powers you know and the weapons of our warfare are not carnal but mighty in god so spiritual warfare requires obviously spiritual weapons and so last week we looked at our enemy and the fact that he is a commander over his troops if you will the fallen angels who followed his lead and all and so we began to look at the origin of the battle and now we begin to see the weapons of our warfare and so paul begins in a in a way that he's actually he's enumerating the way that a soldier would actually dress or be prepared and he began by girding himself girding his waist with a belt a type of a belt because he would wear a tunic and the tunic could trip him up so he would lift the tunic and cinch it in his in what we call the girdle or the the belt that he would wear so that belt that he speaks of is the first thing the soldier would be adorning himself with and it's it's truth so we'll be looking at truth in sense of it as being it in terms of content as well as in terms of its mental application we'll be looking at that because we not only know truth but we need to act on truth and so we'll be looking at that because in the war we need to understand that the weapon the primary weapon that we have it's an awareness that there is such a thing as truth it's kind of like when Jesus was standing before the political governor Pontius Pilate who asked Jesus what is truth well that is still something that people are asking to this day and because we have such an array of opinions as to what is truth i'll be sharing a little bit about knowing the content of truth which would be through our study and preparation through the word of God and our application of truth which takes place when we're in spiritual warfare because even as Jesus was you know confronted by the enemy and Satan himself began to attempt to tempt our our savior Jesus's response is what we're supposed to be responding he said it is written it is written it is written so his weapon of his warfare that he used to defeat satan said get thee behind me is uh is the word of God so we'll be looking at what truth is a little bit tomorrow why we can trust the word of God excuse me and the application of it and you know one of the things that you've mentioned because people are even saying today well truth is relative right and i think being able to build that foundation of what true truth is is vital to the rest of the pieces of the armor but i like what you said i don't think you said it you're teaching we said it in conversation that oftentimes when we're going to get in a battle we take time to study the enemy no you study the end and and this is where the belt of truth comes in because in order for us to know our enemy we must know God's word and uh and be prepared because i think it was you that mentioned that you knew somebody that day i have a friend of mine now who is a martial artist and he said that he before he would enter into any physical combat he said i studied him and the way he said it it made sense to me he was looking for his strengths and his weaknesses just by observing him so the way he was standing even the way that he posed himself these were all um insights into this friend of mine so that he'd know how to attack and so being aware of our enemy to know that um you know that he is a like a roaring lion prowling and seeking whom he may devour but Paul speaks concerning his devices and his strategies his methods and um you know so we have to be aware of the enemy it's not that we admire or it's not that we get caught up in it's that we need to be aware that he uses a variety of things the less of flesh less the eyes pride of life he uses various things but he always seems to return to the same three core things that worked for him when he when he was there in the garden and presenting to Eve the original temptation he still does that there are only three basic areas that he usually strategizes and works on with us and so we need to have truth we have to be aware of what his devices are and we need to withstand because Paul says stand and then he says stand a second time and then he says withstand so stand the first time he uses it I believe in first verse 13 it speaks of standing it's a Greek word that means to stand with your feet planted as a victor somebody who's already overcome so the mentality of the warrior is to know that we've already in Christ overcome we're seated with him we've walked with him so we can stand and overcome but there's another word that is used the second time he uses word stand and that's more of a word that means to be braced and ready you know it's like a lineman on on a football team who's who's he's braced you know for the onslaught that he's going to have when the the rush the person rushes you know you have to be ready for it you need to handle that these huge linemen and all of that well they're prepared they're braced for battle and that's what Paul's talking about it's the war is won Christ won that war for us and we know the end of our enemy because revelation tells us he's cast into lake of fire so he's a defeated foe but that doesn't mean the skirmishes don't continue and so you have to be prepared embraced for it so that having done all you stand you can stand victorious and we'll be looking at that tomorrow look forward to this I want to invite you guys to come out and join us tomorrow at 7 p.m. for a Wednesday night service it's a time of worship and getting into God's word and time of fellowship so want to invite you guys to come on out it's going to be a good study I look forward to it and so just want to thank you guys for tuning in pastor thank you for uh thank you for sharing a little bit about what we're going to be what you're going to be teaching on tomorrow and again church family coming out and join us it's going to be a great time God bless you guys again thank you pastor David and we'll see you guys soon


The number one thing I think that we've been able to accomplish in the EMEA region, particularly with ClickUp, is the extraordinary team of people and the incredible culture that we've created in the EMEA team. We've been able to bring together some amazing individuals, some super high-performing people that love to operate as a team, this extraordinary group of guys and girls that are creating something new in the productivity space and are creating new futures for the businesses that we touch. My short-term career goals are to ensure that the team here are as ultra successful as they can be and more than anything that's what drives me and motivates me is to ensure that the future that we create for the group of people that we have the chance to work with is as bright and shiny as we can make it.


Happy New Year, Mom and Dad! Happy 25th of December, Mom and Dad! Happy New Year, Jesus! Happy New Year, Family! Happy New Year, Family! Congratulations! Particularly, my constituents of Mykonof. From my family to yours, I extend the warmest season's greetings to you. This season, the words of one of our greatest folklorists, Dame Marie Sely for Cessian Descartes, echo in my mind unconsciousness. It may be because Cessian, like many of our ancestors, understood the true significance of Christmas, more so in our unique Lucian style. Although the disparity in my generation gap may not allow me to experience the extent of an authentic Lucian Christmas fully, given my deep rural heritage in Lapointe, Monropo, I was able to celebrate and understand the depth and meaning of the Siouenal. This experience involved beating drums and the thought that homes, neighbors and communities integrated to celebrate Christ and Christmas. For me, this personified coming together to celebrate the successes of the years past. It signified resilience and perseverance in our daily conduct for months past, while with much hope, resolutions and goals were set for the years ahead. It was not just about drinking rum, eating pork and blood pudding. It was the clean socialization that brought people together to celebrate and remain hopeful. The spirit of house to house represented sharing, bringing together a true sense of community. Regardless of your location, our greatest Lucian holiday traditions are the ones of receiving and giving back. We were known to always look out for each other, lending a hand to a neighbor to slaughter the pig or painting of the house to prepare eggnogs and sorrel was what brought us closer to embracing and appreciating each other. In today's modernized living, we have deviated from these traditions and adopted a culture of celebration with its pros and cons, some of us bringing guns and unwanted attitudes and intentions. While we can celebrate and enjoy Christmas for similar reasons, we have lost the true essence of coming together. This Christmas, I urge you to borrow from past traditions of our generations. Let this Christmas be one of celebration of friends, family and community. Let it be one where we genuinely recognize each other as brothers and sisters. We cannot continue to operate and live in an environment where we fear for our well-being and safety. This Christmas, inspired by our traditions, encourages us to be better citizens and most notably our neighbor's keeper. With COVID-19, the last two Christmas celebrations were challenging as we could not express ourselves as we knew. We were stricken to mask. In some cases, our interactions were limited and confined to communities near us. During a better part of this year, we witnessed global relaxation of COVID-19 protocols which remained to date. We must stay thankful and thank the Almighty for sparing us during this time. Let us use this Christmas, this season, to again reach out to the sick and shitting, the less fortunate and those unable to truly celebrate. To my dear people of McWoodnough, like the rest of the country, we have had to make a lot of sacrifices. The high cost of living has impacted your households, that we continue as a government to put measures in place to cushion the impact of these increases. It is my pledge as your parliamentary representative to be a voice for your needs and aspirations and expectations as we go into a new year. I pray that God will continue to guide us as we work together to build our constituency and by extension our country, St. Lucia. This Christmas and every day, let us reflect on how we can live the Christmas message of hope, peace and community. Camoradayde, Camoradibon ami, Camoradibon ami with profound gratitude, solidarity and hope. I wish you a Merry Christmas and a promising 2023. We wish you all the best, a happy New Year, and we wish you all the best. We wait for you, we work for you, and we will develop Miku because Miku is without us.


Hi everyone. I'm going to talk a little bit about lubricated bearings. Lubricated bearings provide a reduction in friction for rotating members, generally, you know, rotating shafts or things like that within other components. And when we talk about lubricated bearings, usually we're talking about things that are useful for high speed operation, high speed but low load carrying, because instead of having physical things to carry like a force, we're relying on the oil that's used for lubrication. So I have a little drawing on here just as an example. If we have a rotating shaft and it's got a bearing support between the shaft and something that's fixed. And, you know, in this case we might be talking about a thrust bearing which can take on both axial loads as well as radial loads on that part. So when we talk about this rotation, generally we have some sort of lubrication surface between these points of contact, so where there's a rotating object and the non-rotating object, and the amount of lubrication and friction that we see is kind of dependent on a bunch of other factors and whether we're achieving hydrodynamic lubrication or not. So giving kind of an exaggerated view of this, if we had a shaft, so this is my smaller inner circle is the shaft and the outer circle is the hole that the shaft rides in, under no rotation or when it's at rest, we might expect it to look something like this, right? The shaft is going to be sitting on the bottom surface of that hole and, you know, not achieving any form of lubrication, it's just resting there, right?  It's rotating around its center and it's kind of starting to, let's say, climb that inner wall of the hole that it rides in and it's starting to achieve some separation. It's pulling oil through rotation down into that interface between the two things until eventually we get faster rotation in which case we have a film of oil in between those two. So in between the shaft and the hole, we have oil, right? And that of course, you know, means that there's much less friction happening and it requires that the shaft is rotating fast enough that it's pulling oil with it down into that interface and causing it to lift. So really what's happening is as it's rotating we have surface tension and it's pulling the oil with it, building up pressure until that pressure is enough to actually cause the shaft to float on top of the oil. So once it's got high enough pressure built up, then it can lift the shaft and support it on that now pressurized oil and oppose whatever, you know, whatever downward loads in this case might be on the shaft. So, you know, there's a few things affecting this and whether or not we achieve this, you know, hydrodynamic lubrication where we have oil between the rotating shaft and the hole. And there's kind of several things that we would want to consider. The viscosity of the oil, the rotational speed, and then how much load is being placed on that shaft. So, you know, of course, as you might expect, if there's higher viscosity, then we don't need as high of a rotational speed in order to pull the oil because there's going to be greater friction. But of course, greater friction could also be problematic as well, right? If we have higher friction than we really need, then that's inefficiency. We're losing power transmission through that. If we have a higher rotational speed, of course, that means we're going to achieve achieve float easier, right? It lowers our viscosity requirement. So the higher we expect the shaft to rotate, the lower the viscosity of our oil is necessary. But of course, it also, higher rotation also means greater friction, right? So we kind of have a balance there between oil viscosity and rotational velocity. And then of course, the load that's actually applied, so in this case, I'm primarily talking about radial loads, the higher the load, the faster rotation or the higher viscosity oil we need in order to achieve this floating condition. And so we can specify all those things, right? If we know our rotational speed of our shaft, we can use that along with the expected loads in order to design through specification of our oil, right, our oil viscosity. So, you know, we could say an SAE 40 oil versus an SAE 30 oil, where, you know, that that specification is basically how viscous the oil is at measured at 212 degrees Fahrenheit. Similarly, an SAE 10 W versus an SAE 5 W, which is measured at zero degrees Fahrenheit. And we can specify those things depending on on what it is we're trying to do. So that's the general principle of what we're talking about with lubricated bearings. And then I'll be getting into how we actually analyze these bearings in a later video. All right, thanks.


Hello, hello, hello. Welcome to a bonus episode from esoteric Atlanta. If you guys remember a few weeks ago, I did a brief bonus episode over the difference between the Creole people and the Cajun people. This of course has to do with our deep dive into the history of New Orleans. Now when we spoke about the Cajun people, the Acadians who came up through New Orleans, we spoke about beignets and a special little cafe in the French Quarter which specializes in beignets. Now growing up, my mother used to make us beignets. She actually made our beignets in the garage because the oil would be so hot and messy. But while I was down in Gulf Shores this past weekend, my mother made beignets with my niece and my nephew. I've titled this video beignets on the bayou because we were definitely very close to bayous. No, we did not sadly get a chance to go into New Orleans, but hopefully that will happen next time. Special thanks to my mother and my nephew Charlie and my niece Jacqueline and my other little four month old niece Mae who watched us make these beignets. Grandmama did a really good job working with the children. As you will see in this video, we did the easiest of all beignet recipes. So something fun that you can make with your kids or if you have guests coming over, they also make a really good dessert. So without further ado, let's get into this bonus episode. As I said, we opted to use the easiest of all recipes. We did not make the dough from scratch. We did this with an eight year old, a seven year old and a four month old. So buying pre-made dough was what we opted to do. If you want the quick and easy way to do it, you too can buy just the Pillsbury pre-made dough with some oil as well as of course powdered sugar. If you go to any specialty restaurants, especially New Orleans, their beignets are most likely going to be made from scratch. That was not our jam this past week. So this video, again, is the simplest of all recipes. Before we start the video with my mother, I am going to put a quick picture up so you can see the ingredients that we used. If I have anybody listening right now that is from New Orleans and grew up making beignets and you want to send me a video of you or your mom or somebody else making homemade beignets from scratch, I will be more than happy to post it on this channel as well. Or if you just want to comment down in the comment section below how your family made beignets, then please feel free to do that. Again, this is the simplest of all recipes. Wow! Can you hand me a spoon of rice? Okay, this one is a biscuit and I need y'all to put your hole in the middle and kind of make them like a donut, okay? So, it's not going to be a biscuit. It's going to turn into a donut like magic. Yeah, you don't have to eat it. Oh goodness. So Charlie and Jeff Beignet is French for donuts. Wow! Okay, so what I need you to do when your hands are clean, I need you to kind of poke a hole in the middle and kind of do like that for me. Can you do that and make some donuts and we'll just put them right here? Like you stick your fingers. That's why we washed your hands. It's so cold. It is cold. I can't even do it. Pick it up. Pick it up and do it. All right. Yeah, and then kind of push your sides. So, grandma studied French in school and your mama, when your mama was in the French Club in high school, grandma used to bring beignets to the French Club. These usually act like this. That's good. They smell right there. You're smelling. The oil is, yeah, they're going to get cooked. Eww. They're going to be like donuts. I can get it. Like that's Dunkin' Donuts? Like Dunkin' Donuts. A little different from Dunkin' Donuts. They have the best chocolate donuts. Dunkin' Donuts are good chocolate donuts. Yeah, I like the little, the little. No, I like the big ones. Try the little ones. Oh, okay. Here, we'll do that last one. Now where did I put it? All right. Now we're going to go over here and we're going to fry them. But when we do that, I need y'all to, you can watch, but I'm going to do that part because that's the part that adults need to do. Okay? And then when we get through, we are going to sprinkle. It looks good. Perfect. It's not perfect. Oh, it's perfect. Nothing happened. All right. Yeah, ready to move to the, over here? Okay, let's do it. So stand up. So kids, don't touch the stove. Don't touch the stove. It's very hot, okay? All right. So I've got enough about immediate high heat. Now what I'm going to do is breathe up at last. So where we are, kiddos, this whole area, it was settled by the French when this continent was settled by the Europeans. Where we live was settled by the English. I don't like to do that. So that's why beignets are popular in this area because the people that lived here are a little hot. I'm going to put it down a little bit. We're French. Cool. It's way too hot. All right, so. Oh, yummy. Yeah. This is kind of our first one. It's a little bit hot. Boy. That quick fast. You know what?  When you please? Yeah, in a paper towel. So we got to let it cool a little bit because the first one was cooked a little too hot. Now, mom, why again? Why don't you want it to cook that fast? Because it's got to cook in the inside. It's got to cook in the inside. So we don't want the outside to get that cooked that fast. The main maze behind us watching. Okay, let me just throw a little piece in here. Can you show them? I will in a minute. We got to That one's a little bit better. Not cooking so fast. Well, that's cooking slower. But that donut looks delicious. Well, these are going to be even better. Yeah, that's a little bit better. It's like a donut hole. All right. Now some beignets don't have holes in the middle, but mom put a hole in the middle because it's easier to cook that way. Oh, I don't want it to splash. Careful. Jacqueline, do you want to place this in here? But don't throw it. Place it in because I don't want it to splash. We got to fill the donuts first. Don't just cook it. I know. She's watching. That's better. I think that hole doesn't smell too good. I want to turn it over so I don't get too brown. I'm going to keep turning it over. Hey, I want to put another one in. Charlie, just place it in. Don't drop it. Yeah, I'm going to do another one here. These are going to be good, aren't they? I don't want them to get, uh-oh. This is the fun part. It's like putting snow on top. I'm going to let Jacqueline have a turn and then we'll let you have a turn. Hey, it's not fair. Powdered sugar. Why do powders have to go around? Because, girls, she was here first. Ladies first. What's not fair? Ladies first. They hit the side of it. What do you mean? Oh, that's good. All right. Now it's Charlie's turn. Ready? I'm going to go first next. You can do more than that if you want. You can do as much as you want. Want to do some more, Jacqueline? Yeah. In Georgia, we call these funnel cakes. Yeah. But they're... All right, is that enough? Nope. Nope. I don't mind it. That's the good stuff. That's okay. I'm getting that one. Okay. Why does ladies always have to go first? All right. I think that's plenty. Yummy. Yummy, yummy. Why does ladies... I'm sure it's done one. And sad. I think it does. Oh, it's pretty good. Yeah. It's a beignet. Oh, pretty good. Good. All right. Give it a taste. Your first beignet. That's pretty good. Good? Is that good? Yeah. What's better, Dunkin' Donuts or beignets? Beignets. Dunkin' Donuts. Beignets. Beignets. All right. But the munchkins are better. Do you want this or do you want me to take it away? Toe. Toe, Grandma. Thank you. Thank you. Do you want this, Charlie?


Okay, so I'm Vishy and I'll be talking to you about ClearTrip's mobile web experience. I have to start with a confession and I have to apologize to Praneet and Rudy and Vidya and all the organizers here because the content of our presentation has taken a complete U-turn since yesterday morning. Unfortunately, yesterday morning there was a meeting and we took a call that we will be joining the likes of Minthra and Flipkart in shutting down mobile web. And yes, you guys in this room are the first to hear about it. So that sort of changed the content of the entire presentation and now the agenda is very simple. I'll talk to you about the ClearTrip journey on mobile web and of course I would be remiss if I don't walk you through the rationale of why we've taken this decision. So that's what we'll talk about. Okay? I'm just kidding. Come on guys. We are not shutting down mobile web, not today, not anytime soon. Okay? And the first point on our agenda. I never said never. Never say never. Never say never. Not anytime soon and I'll walk you through why that is the case. Okay? So the first point is why ClearTrip is not shutting down mobile web. We'll then talk about user behavior on mobile web, what we are seeing on mobile web is different from the apps and from desktop. We'll talk about how we are using mobile web to acquire new customers and why it's important to do so. We'll talk a bit about using mobile web as a testing ground for new features and again a bit about the why. And finally we'll take a look at the future, what mobile web will look like maybe two years from today or it needs to look like and so on. Right? So first of all, why mobile web? Mobile web is and continues to be integral to ClearTrip's plans when it comes to mobile. Okay? 50% of all our traffic is coming from mobile devices today. 50%. And of that mobile device traffic as much as 46% is coming on mobile web. So if you look at it, 23% of all traffic to ClearTrip is today coming on mobile web. And yeah, this is a huge percentage, right? But it would be meaningless if that trend is decreasing, if the traffic on mobile web over time is decreasing. But I'm happy to report that is not the case. Right? In the last 12 months and in the last 18 months mobile web has been going up, up and only up. Okay? So this slide shows you the search trends on mobile web since April 2014 to March 2015. The blue line is flights. The yellow line which looks like green here is hotels. It's only going in one direction. Right? This is searches. The same is the case with bookings. Bookings as well. Both for flights and hotels it's going up. In fact, mobile web today contributes 20% of all mobile bookings that we get for ClearTrip. Right? So in a nutshell, this is what it is, right? It's a significant share of searches and bookings. That share is not decreasing. It's actually increasing. And the traffic itself is increasing. And that's why mobile web is and continues to be important. But it's more than the data, right? It's, for us, it's a bit about the philosophy as well. We care about our users and we believe that we travel is a need-based service. And ClearTrip needs to be wherever and whenever our users need us to be. Right? So that's why our users are on mobile web. A significant percentage of them are. And that's why we will continue to focus on mobile web and continue to offer new experiences. In fact, just this week, we've completely revamped our mobile website. So the experience you see now, which internally we call Tuxedo, is now much better than what you were seeing last week. And it's in line with our desktop experience, right? So that's why mobile web. Now let's look at user behavior, right? So one of the, I mean, like I said, travel is a need-based service. And one of the key metrics for user behavior is last-minute bookings, right? When you need to book, you need to book. And many times that happens at the last minute. So the way we track last-minute behavior is by looking at the difference between the date on which you've booked and the date when you're traveling, okay? So if you're booking today, morning to fly tonight, the difference is zero. If you're booking today to fly tomorrow, the difference is one. If you're booking today to fly next Friday, the difference is seven and so on and so forth. So this slide shows you that difference for Android app, iOS app, and mobile web for flights and for hotels. Now, one thing we note is that for, I mean, for travel as a whole, we see more pronounced last-minute booking behavior on mobile compared to desktop. So people tend to book last minute more on mobile than on desktop. And within mobile, what these slides show you is that mobile web shows a much more pronounced last-minute behavior than Android app and iOS app, right? So for mobile web, as many as 26% of all flight bookings are for today, travel today or tomorrow. And for hotels, it's as much as 46%, right? 44%. So it's mobile web, essentially, is our most need-based channel for a need-based service, right? And that's why it's so important. When our users really need to book, they need to book right now. And if they are on the move, they are on mobile data, or they don't have storage in their device, we don't want to leave them stranded. We will allow them to book on mobile web, right? The other interesting thing to note is the average booking size by platform, right? So again, this slide shows the average booking size for domestic air, international air and hotels. Now, in flights, we all know it's a simple rule of thumb. The later you book, the more expensive the ticket is, correct? So that's what you see here. Because an overwhelming percentage of bookings on mobile web are last-minute bookings, the average booking size on mobile web is higher than both iOS and Android apps. But the behavior is slightly different for hotels. Yes, there are more last-minute bookings, but the target audience, the customers who are booking hotels on mobile web are different. And they tend to be first-time users, so they tend to not book very expensive hotels, or they tend to book for shorter stays, which is why for hotels, the average booking size on mobile web is significantly smaller than on the apps. And this is further borne out if you look at the kind of hotel bookings we are getting on mobile web, right? We are on the apps, we get as many as 34% of our bookings for four and five-star hotels. But on mobile web, that percentage is just shy of a quarter of the bookings. So a very different kind of customer as well on mobile web compared to on the apps. So in summary, user behavior. So we already talked about the last-minute booking behavior, right? Most need-based channel of a need-based service. But another kind of user behavior that we see is sort of infrequent use, casual searches, first-time visitors to Clear Trip, maybe shopping around, comparing prices between two, three travel websites. So they'll come, they'll do a couple of searches, probably won't book, which is why we see a lot of casual searches and few bookings. And this is what drives down the conversion of mobile web compared to the apps. And we define conversion as the number of bookings divided by the number of searches. So for mobile web, the conversion is usually in the range of 20 to 30% compared to the apps. And of course, I already talked about booking size high in flights because users tend to book last-minute low in hotels because users are usually first-time users or booking different kinds of hotels, right? So that's with respect to user behavior. Let me talk a bit about mobile web for user acquisition. I'll start with why this is important, right? So we already talked about the huge percentage of traffic that is coming for Clear Trip on mobile web. The other thing to note is that of the traffic that is coming to mobile web, 40% of that traffic is new users, right? Across time periods. This is across the last two quarters, which is a significantly higher percentage of new visitors as compared to the apps. Now, on apps, retention is high, but the percentage of traffic, percentage of new users is lower. So this is, in itself, is a very important metric because that means this is your primary channel for new traffic, new user acquisition, right? And of course, a huge percentage of that, this traffic is coming from search engines like Google, right? And where do those people land? They land on your SEO pages. And when they land on your SEO pages, there's a choice you have. You can either take them to a crappy, non-mobile-optimized SEO page, in which case they will remove you from the consideration set immediately and never come back again. Or you can realize that, okay, this is static content. It's not very interactive. So there's not too much effort involved in mobile-optimizing this content. And if you do that, and if you give them a good mobile experience on the SEO pages, which is the first experience they are having with your brands on a mobile device, then there's a much higher probability that they'll stick to you when it comes to mobile devices. And that's exactly what we are seeing.  So the first one here, the first two, actually, if you search for hotels in Goa on Google, the second or third link will be a clear trip link. And if you tap on that link, this is the page you come to. This is a not very dynamic content page, which is basically a list of hotels in Goa. It starts with, it gives you a nice little upsell here, which incentivizes you to download the app. It lets you start a search. It gives you the phone number if you want to book on the phone. And yeah, it's not, it doesn't look as good as the app. But the objective is it needs to meet a certain minimum standard of user experience, and that it does. Similarly, if you search for flights from New Delhi to Bangalore, the first clear trip link that you see will bring you to this page. This page shows you a nice little fair calendar here, which is showing for the next 30 days, what is the lowest fair every day for New Delhi to Bangalore flights. If you tap on any of the dates, it'll immediately trigger a search for New Delhi to Bangalore on that date. And of course, if you scroll further down, you'll get things like flight schedules, frequently asked questions, and so on and so forth. So like I said, it's about maintaining a minimum threshold of user experience and making sure you don't, you are not chucked out of the consideration set completely when a user has the first experience with your mobile site. Of course, once users come to your mobile, so for example, SEO pages, and then they trigger a search, they go to your actual mobile site where all the options are there. Then it's your responsibility to convert them to the apps. And I'll talk a bit later why it's important to do so.   All of them have their pros and cons. What we are using today is what I like to call money banners. And we all know money talks, right? So this banner is very simple. Download the ClayTrip app and you'll get 250 rupees off on your first booking irrespective of what product you're booking. And guess what? It works. We are getting a bunch of downloads from this. And the other thing we noticed is when you use money banners, the size or the prettiness of the banner suddenly stops mattering. So that's what's happening here. So we're getting a nice little bunch of organic downloads from these money banners here. So like I said, so mobile web for acquisition, right? It's the gateway to your mobile experience. When a new user is coming from a search engine, or they are searching for either your brand or for a travel-related keyword, this is the first experience of your brand on a mobile device. If this is crappy, first impressions last a lifetime. You will fall out of the consideration set right there and then. And this is the best source of organic user acquisition for apps because there's intent. They are searching on Google either for your brand or for a travel-related keyword. They are mobile. They're already on a mobile device. And they are brand aware. They are coming through Google. They've clicked on a clear-trip link. So by definition, when they reach your page, they are already aware of your brand. It's your responsibility to make the most of these users. New features on mobile web. So this is an interesting case because I know some, like, the context right now is interesting. Some people are shutting down their mobile sites. Others, even if they are not shutting down, they are kind of getting the step-child treatment. And in fact, if you've noticed in the agenda, that's what I've called mobile. It's mobile web. It's mobile step-child. So we try not to do so. So for example, one of the use cases here is high-traffic pages. So there's something called a train calendar, which I'll show you in a bit. This train calendar ranks very high on SEO. And believe it or not, up to 25% to 30% of all clear-trip traffic comes to this page alone. So imagine if a third of all our traffic is coming to a single page, and if that page is not mobile optimized, imagine what impression we are creating on the users. You can also use mobile web as a testing ground for new features. It doesn't take a lot of effort when you're launching something on desktop. You can concurrently launch it on mobile web. Its release cycles are much shorter on web. You can release weekly or daily or fortnightly or whatever. But on apps, usually the release cycles are four to six weeks. So it makes sense to launch features on mobile web just when you're launching them on desktop. And you get a nice little insight into how mobile users will respond to these features. And at clear-trip, we pride ourselves on being mobile first before mobile first was even a thing. For example, in October 2010, five years ago, we launched what is called Express Checkout. And we launched it only on our mobile site. It was launched on the mobile site before it ever made its appearance on a desktop as Expressway. Three years ago in 2012, we launched Quickies. We launched it concurrently on desktop and mobile web. This is last-minute bookings, last-minute hotel bookings. And a few weeks ago, we launched Train Running Status. This, again, is actually not on desktop at all. You won't be able to find it on clear-trip's desktop site. But you will be able to. Now it's in the apps where it was launched on mobile web much long before it was launched in the apps. So that's what we are talking about. And this is Train's Calendar. So what Train's Calendar is is very simple. You enter a source and a destination station. And say, for example, in this case, you're saying Bangalore to Chennai. It will tell you for all the trains between that go from Bangalore to Chennai, for the next two weeks, what is the availability on each day. It's a brilliant use case, gets a ton of traffic for us. And this is what it looks on desktop. And this is what it looks on mobile. So it works. It just works. And now, in fact, it's on the apps as well. It was on mobile web long before it was on the apps. And similarly, we have a bunch of pages which are train information pages, train schedules, when a train runs, what is its schedule, and so on. And this is actually a work in progress right now. Ultimately, this is what we want to do. On mobile web, our train section should look something like this, where all of our trains use cases are serviced from a single step. So that's about new features on mobile. Like I said, low effort, low maintenance, user experience is not compromised. And the idea is to get users accustomed to new features on mobile web and then convert to app. Now, this is interesting. Here's where I'll give you a slightly contrary view point. Now, yes, it is important to serve all need-based use cases on mobile web. If a user needs to book a flight, he should be able to do so right there and then. But for some of the use cases, for example, if you want to reschedule a flight, or if you want to check in for a flight that is already booked, one of the things that we want to try out is to disable these features on mobile web and ask users that if you want to use this, you know what? You should download our app. It's a great user experience. And it'll let you do all this and more. So what you're doing here is you are taking the slightly more advanced use cases that are used by the more sophisticated users. And you are asking them that if you want to use this, you should really download our app. It's selective disabling of some mobile web features in order to make sure that users get to experience our app as well. But yeah, you need to be very careful, very choosy, in which use cases you do this. For example, if I say, yes, you can book flights and hotels on our mobile web. But if you want to book trains, you need to download our app. Then a lot of you in this room will not be happy. So that's something to take care of. That's pretty much it. Like I said, I'll be brief. So the gist, what are we talking about? The first thing, really, is for us to understand what mobile web is good at and what it's not good at. Mobile web is good at acquiring traffic. But there's a reason it's called traffic. Whenever you talk about web, whether it's desktop or mobile, you talk in terms of traffic. You talk in terms of visitors. You never talk in terms of users. You know why? Because this traffic, even when it lands on your website, you don't own it. Let's be very careful. The only company that can claim to own this traffic is Google. You don't own this traffic. That is why the quality of traffic is always an issue. If you want to convert traffic to users, it's best to convert them to the apps. Yes, it's very good to test new features. And yes, you get a high percentage of new visitors on mobile web. But the flip side of that is that retention is poor. You will not probably get the same users coming to mobile web again and again. Because the people who are coming here are coming only when there is a need, not when they want to. Yes, it's low effort and low maintenance, but it's also low engagement. And that's because right now, mobile web cannot compete with the performance or the user experience that a native app can offer. So I qualify this with the word native. That's the operative word here. If your app is just a bunch of web views, then this does not hold true. But yeah, if your app is a native app, then yes, you can offer a much better user experience on mobile web than you can on the apps. So where does this lead us to? Where is mobile web heading in an app world? It's an app world. And let me qualify that statement in an app world. Why is it an app world? Seven months ago, I was blessed with a baby daughter. I know the average age in this room is much younger than mine, but bear with me here. So now she started moving around. And trust me, when babies move, they move. But what is happening is she's already started gravitating towards the iPhones and the iPads that she sees lying around. She sees us using. We try not to use them too often in front of her, but she's already started gravitating towards those. In a couple of months time, she'll start using the iPad or the iPhone. And when she starts using an iPad for the first time, guess what she will use when she first picks it up? She will open an app. She will open an app. It might be a game. It might be a music app or whatever. She'll open an app. When she's bored with that app, guess where she'll go to find another app? She will go to the app store. Because she knows that's where that goes to look for new apps. And so she'll go to the app store. So it'll become a cycle. She downloads an app. She goes to the app store. That's her world. That's the internet for her. Yes, sooner or later, she'll probably join a Facebook to social network. Or she may not want to join the social network that her parents are on, in which case she might join some new fangled social network like LO. Of course, she'll find me there as well, because I'm two steps ahead of her. So yes, she'll join a social network. She'll see links that her friends are sharing. And she'll tap on that link. You'd think, OK, now she'll come to know that there is something called mobile web, but she won't. Because that link also will open within the Facebook app. The point I'm trying to make is it'll be a long, long time before she even becomes aware in her consciousness that there is something called a browser and there's something called mobile web. For us, when we were growing up, there was this brilliant, amazing thing called the internet. And the portal to that internet for us was either a crappy internet explorer or a brilliant Netscape navigator. For her, the portal to that internet is an iPhone and an app store. Yes, someday she will come to know that there is something called a browser when I'll tell her. And I'll tell her this is where you enter the name of the website to visit a site. And then probably she'll ask me, but dad, why do you need to visit a site? Why don't you just get an app? That's where the next generation is headed. In three to four years, the next generation won't even know that there is something called mobile web. So we need to be, I'm not saying the usage will completely be obliterated, but we need to be cognizant of where things are going. And that's why in this kind of a world, mobile web needs to understand that the way to coexist is by complimenting apps, not trying to compete with them. You need to understand that there are want-based use cases, there are impulse-driven use cases for which apps are very good. There are need-based use cases when you just have to do something, and if you don't have the app, you'll search on Google. And at that time, you need to serve the needs of the user in mobile web, right? You need to be where the user is. That's our philosophy at least. You need to open the gates for mobile users. If mobile users are visiting your brand page for the first time, they need to see something that is not crappy, and that's what I call opening the gates. And once you open the gates, once they are inside the gates, converting them to the apps is your responsibility. You need to acquire users, not traffic, because you never acquire traffic. It's never yours, right? And finally, apps can also play a better role in app engagement. Mobile web can play a better role, right? There can be much heavier use of deep links to apps. They can coexist, right? And there can be, like I said, value-added features can be offered from apps only instead of mobile web, right? I'd like to finish with some thoughts on how everyone in this room, you know, all of us I think can do a better job of selling mobile web as well, right? It's, there are use cases, there are situations where mobile web is genuinely superior to apps. For example, if I'm on an edge network, it doesn't take any data. If I have a smartphone where I'm running low on storage, it requires zero storage, right? If I am, there's a reason why all the car manufacturers don't have apps of their own, because you don't buy a car every day or every week or even every month or even every year. It does not make sense for them to have apps because you will never keep those apps on your phone. You might install it once when you're looking for a new app, but you'll delete it as soon as your purchase is done, right? That's why car makers have mobile web, not apps. And in fact, many of them don't have mobile web also, which is an entirely different story. Like I said, a mobile web can intelligently be used as parts of apps. It can also be used as entire apps, although we don't recommend it, but we know, all of us know, that there are some brands that are doing that, right? True A-B testing. I posit that true A-B testing is only possible on the web, not on apps. Yes, there are a bunch of SDKs available, but if you've tried using a couple of those SDKs, trust me, it is no cakewalk, right? Moving a button from top to bottom is not what I call A-B testing. A-B testing is offering one experience to one set of users and a different experience to a different set of users. That today, it's either impossible or very, very hard to do in apps. So hard that it's not worthwhile, right? And finally, I think as proponents of mobile web, we can do better at helping users create shortcuts or launchers. This whole paradigm of opening a browser, either going to Google or entering the URL to open a website is going to become archaic very soon, right? So I think we need to do a better job on our websites to ensure that the users who are coming here can create quick launchers. Again, these launchers don't take any time to download. They are not dependent on the speed of my data network. They don't take any storage. Those are things that we need to educate users on, right? So yeah. This is how I think we can get better at selling mobile apps. And that's pretty much it from me. Thank you. APPLAUSE Hey, Vishy. So could you elaborate a little more on the last point where you said that true A-B testing is only possible when it comes to the mobile web? Do you have any sample cases in mind where you saw that doing A-B testing on a mobile app was probably the worst thing you would have done? So where I'm coming from, yes, I have used cases in my mind. Unfortunately, I can't share many of those with you. But yeah, where I'm coming from is we've recently, for the past couple of months, we've been struggling to integrate A-B, so-called A-B testing STKs into our app, right? Now some of these STKs require you to predict what are the things that you would want to A-B test and pre-program those things into their STK. So pre-program events for every little UI element that you want. So it's basically replicating your entire in-app analytics infrastructure. And then whatever UI elements are already events are configured for them, only those you can A-B test. But my problem is I cannot predict with 100% confidence what I might want to A-B test three months from today. And if I decide to A-B test something and the event for that is not configured already, then I need to push an update anyway. So it defeats the whole purpose. If I need to push an update before running an A-B test, it defeats the purpose, because the time taken is just so long. That's one. There are other kinds of use cases, which are just, I mean, I want to offer a completely different experience, for example. So for example, we call it the book flow. When you've searched for a flight, you've selected for a flight, you've selected a flight. Once you've selected a flight till the payment stage, that's called the book flow. It's a four-step flow. I want to offer users a completely different experience for these four steps. The only thing to do here is to have these four screens plus the variance of the other flow built inside the app, for which as well, if I've not predicted this in advance, I need to push an update. That is one. The other thing is if I start replicating screens like this, it increases the size of my app, which in turn increases the chance of my app being uninstalled. That's where I'm coming from. It's just much, much simpler to do on web. So I'd just like to say a couple of things. One thing, I really appreciate all the data that you're willing to share with us, all the analytics, because I'm sure all of that is very valuable and it's not generally something that we get to see. And you may not get to see a lot of that in the presentation that you get from it, but anyway. And also one interesting thing that I saw compared to previous talk. So one of the things I saw that you've done with your mobile site is you have kept it simple and you have let it stay a website and not try to make it look like a crappy app. It looks like a website. It behaves like a website. And so there is no confusion there. I know what it is and what it works. So I didn't really have a question for you. Just wanted to point that out. And I just say that that was very interesting. Thank you so much. That compliment actually goes to the three or four gentlemen sitting here who are part of our design team. And they are the ones who make everything look as good as it does, right? But thank you. Hi, Vishy. Hi. So you started off by saying you want to be the app wherever the customers need it, whenever the customers need it, right? That's what you started off with. And then probably also mentioned that it's not a great user experience when a person has to download an app in not that great network conditions and things like that. I want to understand how is it a great experience if a person has to download the app if I have to make a last minute change in the booking? I'm not saying it's a great experience. So why would you consider blocking that feature at all? Even think of considering blocking that feature. Does that help in a good experience? Or is it after a point of time you don't care about the experience, now the business? We have to move towards the business. OK, so you have to understand, I know everyone in this room cares about user experience and design. I do, too, coming from ClearTrip. But you have to understand that sometimes you need to make calls that are in the interest of the business. I'm not going to tell you that that is a better user experience than if you were able to do that right there on the web. What I'm saying is for non, yes, maybe rescheduling was not a very good example there. Because again, that is a need-based use case. If you need to reschedule now, you need to reschedule now. But so that's what I'm saying. That's the internal discussion that you need to do. That if it's not a need-based use case, if it will not piss off users. For example, you need to check in. Now there are 48 hours to check in. In fact, our check in works in a different way. You can check in any time after you've booked. So if that is the use case, then there's no compromise to be made. You don't have to check in right now. We are telling you, yes, if you want to check in, you can download the app. You don't need to download it right now when you're on mobile data. You can download it when you go home when you're on Wi-Fi. So point taken. I'm not saying one is better than the other. I'm saying that's a call that needs to be taken carefully so that, yes, the needs of the business are satisfied, but also the customer experience is not compromised. All right, fair enough. So the thing that I really liked before that, at least I find that to be the quote of the day when you said that the money banners, when they're there, doesn't matter whether the design is good or not or anything like that. So if you're talking about incentivizing people to upgrade to an app, I find that to be fair, a totally fair thing. But if you're saying that I'll throttle a feature, I'll let you not do it, that's like blackmail. Just a comment. OK, agreed. Point taken. Thanks.


A student living in a 3 meter by 5 meter by 2 meter dormitory room turns on her 10 watt fan before she leaves the room on a hot summer day, hoping that the room will be cooler when she comes back in the evening. Assuming all the doors and windows are tightly closed and disregarding any heat transferred through the walls and the windows, determine the temperature in the room when she comes back 10 hours later. Assume the specific heat capacity is constant, and assume the room to be at 100 kPa and 20 degrees Celsius in the morning when she leaves. I will begin with a system diagram indicating that it's perfectly insulated with our fuzzy line, which show that it's adiabatic. I have a fan that is blowing air around, and that fan is causing energy to enter the room. And depending on how you define your system, that energy could appear as a couple of different things. In my case, I'm going to define my system as the volume of the room, and I'm going to assume that no air enters or exits that, so that's both a control mass and a control volume. And I'm going to qualify the energy entering as an electrical work. So I'm going to call it a work in. Then I'm going to establish some assumptions. We were told to assume the heat capacity of air is constant. That doesn't need to go in my assumptions list. I was told to assume that the initial temperature and pressure were 20 degrees Celsius and 100 kPa, so I don't need to list those in my assumptions list. But I will assume that the only thing the student has in her dormitory room is air. So room contents are just air. Even the fan takes up zero volume and contributes zero mass. Somehow. Two, I'm going to say that the volume of the room doesn't change. So as the temperature changes, I'm assuming that the expansion or contraction of the air is not, you know, deforming the walls in any way. They are relatively rigid, or at least rigid enough to support that minor change of pressure. I am assuming that the, I am simplifying it a little bit by treating it as a closed system. So I'm assuming that no mass of air escapes under the door or around the gaps in the door or around gaps in the window or through any vents in the ceiling or anything, just the same mass of air the whole time. Then I was again told to neglect any heat transfer. So I don't need to list adiabatic as one of my assumptions. I don't have to account for heat transfer through the walls and windows. All I have is a perfectly sealed and perfectly insulated room and that energy is entering in the form of electrical work. So I guess closed system is kind of implied by all the doors and windows are tightly closed, but we listed it anyway. Now, if I set up an energy balance on this room, I can say, first of all, that I am treating this as a closed system. Therefore, E n could be Q in or work in and E out could be Q out or work out. Then I have a transient process. Hold on, let me pose that question to you. Hey guys, shouldn't I treat this as steady state or not? No, I should not. I can't neglect the effects of time because we have a duration. The presence of a duration strongly hints to us that we are analyzing a transient process. Therefore, because it's transient, I'm going to include the left hand side as delta U plus delta KE plus delta PE. Then I can begin to simplify. I was told to treat this as perfectly insulated. I can reasonably neglect any work out. The only work out that really would occur would be boundary work, I guess, if we were, like, deforming the walls and changing the volume of the air. But I'm not. Then I'm going to neglect changes in kinetic and potential energy of the air as well. Now, I know what you're thinking. You're thinking, John, but isn't the fan changing the kinetic energy of the air? And you're right, it is. But all of that change of kinetic energy is happening internally. It's on the inside of our system. The system as a whole, the average kinetic energy of the mass of the air in the room, is not changing. So that means we have delta U is equal to, excuse me, that's a big U. Delta big U is equal to the work entering. And I could write work in as specific internal energy if I were to incorporate mass by saying M2U2 minus M1 times U1. But because I've assumed it's a closed system, the mass is going to come out. And I'm left with mass times specific internal energy at state two minus the specific internal energy at state one. I have a delta U, which means I'm faced with a decision. Do I use option one and look them up or do I use option three? Well, we've been told to assume the specific heat capacity of the air is constant. So we are going to be deploying option three. The question really becomes, do we use Cb or Cp? Well, remember, variety of gases like this air, which by the way, I could write explicitly as an assumption. It doesn't matter if I have a constant pressure or a constant volume process. Cp is defined as dH dt, regardless of if it's constant volume or constant pressure. And Cv is defined as du dt. Therefore, which one I use is just dependent on if I have a delta U or a delta H. So we can write this as the integral of du is equal to the integral of Cv dt, which because Cv is constant, comes out of the interval and we're left with delta U is equal to Cv delta T. Therefore, my work is going to be mass times the Cv of air times delta T. Delta T is what we are looking for because I want T2. And on the electrical work side, I don't actually know the electrical work, but I do know the rate at which the work is entering and a duration. So instead of running work, it might be more convenient for me to write electrical power and duration. I recognize that electrical power is going to be the magnitude of work accomplished over the process divided by the duration. Therefore, I can say work is equal to electrical power times duration. So in this equation, I know T1 delta T and power so far. I'm looking for T2, which means I need to come up with the Cv of air and the mass of the air. For the mass of the air, I'm going to use our ideal gas law. I know you've grown very dependent on the property tables, and that's all well and good. But for ideal air, we don't need a property table to tell us what the mass is. Because we've assumed it's an ideal gas, we can treat it as an ideal gas for the purposes of calculating a mass. The mass of the air, we could write as the pressure times the volume divided by the specific gas constant times temperature. Which pressure and which temperature to use doesn't really matter as long as I use them consistently. So if I plug in state one for pressure, I have to plug in state one for temperature as well. Because I don't know T2, I'm not going to use state two properties, I'm just going to use state one properties. The volume of the room is going to be 3 meters by 5 meters by 2 meters, because we assumed that the only thing in this room is air. So we don't have to subtract any volume dedicated to furniture or people or the fan or whatever. So I have electrical power multiplied by duration is equal to E1 times the volume of the room divided by specific gas constant of air times T1 times CV times T2 minus T1. So next is going to be calculating a couple of these intermediate quantities. And again, I'm going to do this all symbolically because I prefer to only perform the arithmetic once. So instead of plugging in the specific gas constant for air, I'm going to recognize that it is the universal gas constant divided by the molar mass for air. The universal gas constant comes from the inside of the front cover over our textbook. That's 8.314 kilojoules per kilomole Kelvin in the case of the metric unit system. For the molar mass of air, I'm going to be using table A1, which is going to show us that our molar mass is 28.97. Then the volume of the room is going to be 2 meters times 5 meters times 3 meters, pressure we know, temperature we know, CV of air, we can look up. For looking up the specific heat capacity of ideal gases, we have two tables to refer to. We can look at table A20 and table A21. A21 is the heat capacity as a function of temperature using line fit data for a variety of ideal gases. If we needed one of these gases specifically, we could use this if we had to. But for most of these substances, for most of these substances we're going to analyze, we have table A20, which gives us the specific heat capacity, CP, the specific heat capacity, CV, as well as k. By the way, k is just the proportion of CP over CV, which is useful in certain circumstances. We can formalize that if you like by recognizing that k is CP over CV. And while we're here relating these quantities to one another, let me take you aside and talk about our H value. H we define as U plus pressure times specific volume. And if I wanted to, I could plug in RT for ideal gases and write this as H is equal to U plus R times T. Because PV is equal to RT for ideal gases, again referring to the specific volume, not the total volume. And if I were to take the derivative of all three of these quantities with respect to temperature, I would have DH DT is equal to DU DT plus R, meaning for ideal gases, CP, CV and R are all related to one another. We often write R as CP minus CV. So if you're in a circumstance where you know CP and you know the specific gas constant, but you don't have CV, you can calculate it this way. Anyway, on to our actual lookup. We are looking for the CV of air. We are assuming that it's constant. And the best thing to do here would be to look up the CV of air halfway between T1 and T2. Well, if I go into this table, I can see I have CV of air at a variety of temperatures here. However, I don't know T2. Because I don't know T2, I can't actually use halfway in the middle. So the best thing to do here is to use the temperature at day one and go a little bit over it if I have to commit one way or the other, because presumably the temperature is increasing. So the temperature at day one was 20 degrees Celsius, which my calculator can help us convert into Kelvin. I take 20 plus 273.15 and I get 293.15 probably 293.15. So because I'm just grabbing a value that's close to halfway in the middle, we're going to commit up instead of committing down. I mean, it's closer anyway. So we're using the value at 300 Kelvin, which is 0.718 kilojoules per kilogram Kelvin. And that again came from table 820. So now I think we know everything. We know duration, we know power, we know pressure, we know temperature, we know temperature, we can write the specific gas constant as two quantities that we know, and we know the volume in terms of three quantities, which means at this point, solving for T2 is just a matter of doing some algebra and then some arithmetic. So if I do the algebra in my head and hope for the best, I'm going to write this as T2 is equal to and then that would be power times duration times universal gas constant times temperature one divided by molar mass of air times E1 times volume of the room times CV of air quantity plus T1. And if I draw a big horizontal line, I can start plugging in numbers. T2 is equal to, first we had the power of the fan, which was 10 watts, and then the duration, which was 10 hours, and then the universal gas constant, which was 8.314 kilojoules per kilomole kelvin. And then T1, which was 1T plus 273.15 kelvin. And then we are divided by the molar mass of air, 28.97 kilograms per kilomole. And then P1, which is 100 kilopascals, the volume of the room, which was two meters by five meters by three meters. And then multiplying by the specific capacity for air on a constant volume basis 0.718 kilojoules per kilogram kelvin. And we want to be able to add this to 20 degrees celsius, which means that we need a quantity in kelvin. So I will recognize that so far kelvin cancels kelvin, which is a great start. And kilograms cancels kilograms, kilomoles cancel kilomoles, kilojoules, and kilojoules I can cancel. So to get rid of the remaining hours watts, cubic meters and kilopascals, I will break those into their components. So first up, a kilopascal is 1000 Pascals. A Pascal is a Newton per square meter. And a watt is a joule per second. And then a joule is a Newton times a meter. So watts cancels watts, Newton cancels newtons, cubic meters cancels meters, meters and meters. And then this kilopascal cancels this kilopascal, leaving me with seconds in the denominator, hours in the numerator, which I can fix one hour is 60 minutes. And then one minute is 60 seconds. Hour cancels hour. Minute cancels minute. Seconds cancel seconds, leaving me with kelvin, to which I'm adding 20 degrees Celsius. At this point, a lot of you are thinking, but John, don't we have to convert Celsius to kelvin before we calculate an answer? But remember that when we're talking about a temperature difference, a temperature difference is the same in kelvin as it is in degrees Celsius. And what we're computing here is actually a delta T. So if we come up with an answer in kelvin, like 10 kelvin, a temperature difference of 10 kelvin is the same as 10 degrees Celsius. Because if we were talking about the difference between say 40 and 50 degrees Celsius, the difference is 10. And if I add 273.15 to both 40 and 50, the difference is still 10. Anyway, I'm going to want our good friend, the calculator and calculator is going to take 10 times 10 times 8.314 times the quantity 20 plus 273.15 times 60 times 60.  And we are probably going to get a syntax error. Okay, too many parentheses. And I get 14.0607. 14.0607 plus 20 is 34. So T2, assuming constant specific heats, is 34.0607. And that's technically the answer to the question, but I don't want to be done yet. The problem told us to assume constant specific heats. And that's fine. We computed an answer like we were supposed to. But what if that hadn't been there? What if we wanted to try working through the problem with just option one? Well, for that, we wouldn't have substituted in cv delta t for delta u. Instead, our approach would be used to want to look up u1 and use this relationship to calculate u2 and then use u2 to look up t2. So in the interest of character building, let's try that, shall we? I'm going to grab out this. We're going to pull this over to a new sheet. We're going to establish an alternate universe where we had u2 minus u1 here instead of cv delta t. Then I'm still using the ideal gas law, but I still plug in pressure times volume divided by specific gas constant times temperature. And I'm still plugging in 10 watts times 10 hours on the left hand side. The difference here is that I'm now using t1 to look up u1 using this equation to get to u2 and then using u2 to look up d2. Because for ideal gases, internal energy is only a function of temperature. So I don't need temperature and pressure to look up u1, I just need temperature. So let's start there. At state one, we had a temperature of 20 degrees Celsius. Let's look up u1 corresponding to that temperature. For that, I'm going to go into my property tables. And what I want is specifically table 822. Table 822 is the equivalent of our steam tables except for air. And remember that it's only one dimensional. We only have temperature driving our lookup. So I am going to take the temperature and I'm going to look up an internal energy. And for that, I have to convert 20 degrees Celsius to Kelvin, which remember is 293.15. So if I were to take 293.15 minus 290 divided by 295 minus 290, then I could apply that same proportion to the specific internal energy, which would be between 206.91 and 210.49. So let's try that interpolation, shall we? I'm going to take 293.15 minus 290 divided by 295 minus 290. And I set that equal to what I'm looking for, which is x minus the value at 290, which was 206.91. And I divide by 210.49 minus 206.91. Then I can get an x value of 209.165. And then from that internal energy, we can compute a u2 value. Again, I'm going to use algebra. So this is going to be u2 is equal to power times duration times universal gas constant times u1 divided by molar mass air times p1 times v1. And I'm adding u1 to that quantity to get u2. So we are taking 10 watts multiplied by 10 hours. And then we are multiplying by the universal gas constant 8.314 kilojoules per kilomole Kelvin. And we are multiplying that by t1, which was 20 plus 273.15 Kelvin. And we are dividing that by our molar mass of air, which is still 28.97 kilograms per kilomole. And then I am multiplying that denominator by p1, which was 100 kilopascals. And multiplying again by two meters times five meters times three meters. And then we are going to convert some units, which means we probably need more space. I will scoot this over to the left. And so far kilomoles cancels kilomoles and pretty much nothing else happens.  Kilonewtons cancels kilonewtons. Kilonewtons cancels kilonewtons, kilopascals cancels kilopascals. And then Kelvin cancels Kelvin. Forgot about that. Then we don't change page. We have meters, meters and meters in the denominator, which cancels square meters and meters in the numerator. And I have hours, watts and kilograms left to contend with. So the time inside of the power and the time are going to take care of themselves. And what I want is an answer in kilojoules per kilogram, because I want to add that to our value of u1. So I'm going to take a watt and write that as a joule per second and then convert 1000 joules to 1 kilojoule. And then I have time appearing in the numerator and time appearing in the denominator. So instead of running this as 60 and 60 again, I'm just going to write there are 3,600 seconds in an hour. Normally I would advocate against trying to do mental math when you're doing unit conversions. Might as well do it anyway, but I'm kind of running out of space. And that's just something that I'm assuming you guys can take for granted at this point. 60 minutes in one hour and 60 seconds in one minute becomes 3600 seconds in an hour. So this will leave me in kilojoules per kilogram because I have kilojoules over here, kilograms right here. So I take 10 times 10 times 8.314 times the quantity 273.15 plus 20 times 3600. And I divide by 28.97 times 100 times two times five times three times two times three. It's not the same thing. And I multiply that by 1000. And I get a quantity that is 10. And I add that to my 209 number. And I get a U2 value of 219.261 219.261. And that's a quantity in kilojoules per kilogram, which means I can grab T2 now because I have a one-dimensional lookup. Internal energy is only a function of temperature for ideal gases, which means I can look up a temperature corresponding to an internal energy as well. If I jump into our tables and I see 219.261 occurs between 217.67 and 221.25, meaning our temperature is going to be between 305 and 310 Kelvin. So I can interpolate for a temperature, which I will do by taking 219.261 minus 217.67 divided by 221.25 minus 217.67. And I'm setting that equal to x minus 305 divided by 310 minus 305. And I get a temperature of 307.222. And what I wanted was a temperature in degrees Celsius. So we take that quantity and we subtract 273.15. Then I would get... Great. Thank you, calculator. 34.072. So from this, which should produce the most accurate answer, I get 34.072. Compare that to what we got when we approximated the answer, which was 34.061. Do you think that difference of a 100th of a degree Celsius is significant? No, certainly not. Because in this analysis, we are introducing so much uncertainty as a result of things like assuming the room is perfectly insulated. The heat transfer is going to have so much more effect on this answer than 0.01 degrees Celsius does.  For now as a general rule, it's going to be pretty straightforward if you have some obvious reason that you can't assume constant specific heats, including but not limited to the fact that I say don't in that problem, then you shouldn't assume the specific heat capacity is constant. But in other circumstances where maybe you're evaluating the temperature change of air and it's relatively small temperature change and there's no phase changes or anything, it's probably pretty convenient and probably relatively realistic. Don't forget though that you need to list that as an assumption. You have to be aware of the uncertainty you are introducing. Anyway, that's this problem.


Breaking the Wall of Judgment Day, this is a cartoon from a Danish newspaper 10 years ago. It shows a Danish bishop with a warning sign telling that the end is near. The bishop is me and the church is the dome of Maribor. A journalist had asked me if the climate change could indicate that the end of the world is near. My answer was very cautious. I don't know, but maybe, I said, Christians expect Jesus to come again. So why not? The end might be near when Jesus will come to judge the living and the dead. This started a tough debate in many newspapers. How could a bishop talk about and believe in this? The walls of the churches were somehow broken. People outside the church heard what they didn't know. That Christians believe someday the world will come to an end and there will be a judgment day for all human beings. Now I'll break down another wall for you. Did you know that Muslims also believe that Jesus will come again? And someday the world will come to an end and there will be a judgment day for all human beings. 14 days ago I visited a mosque in Orhus. As you can see, we were sitting talking about the Judgment Day. Islam teaches that in the afterlife, on the day of judgment, all people will be judged. Faith and good deeds done during one's lifetime will be rewarded with paradise and bad deeds and corruption by worldly temptations will be punished with hell, the place of no hope and full of suffering. What are the differences between Islam and Christianity? It is important to be honest and fair and aware of this question. And that is my theological project. I want to compare and analyze what Christians and Muslims, what Christianity and Islam actually teach and believe. Is the Judgment Day a day of fear or hope? In the New Testament Jesus is called the dawn from heaven. We have come to know and to believe the love that God has for us and for the whole world in Jesus Christ. Therefore we may have hope and confidence on the day of judgment. The dawn from heaven is what I as a Christian want Muslims to see and to know about. You might call it my mission.


Welcome folks, lots of green on the screen out here today. Dow Industrial is up 241, Nasdaq up 183, S&P is up 38, and the IWM folks is up $6.17. So S&P and an ABC structure in the way up, and the X100 and ABC structure in the way up, composite, ABC structure in the way up, small caps, ABC structure in the way up. Small contract, up $26, that's already been an ABC structure in the way up, that's straight in 1821, 1894 is the number, silver up 54 cents, 24 dollars 9 cents, light sweet crude up a buck 29, $68.71 a barrel, notes and bonds. The 10-year note, up 10 ticks, 133.29, the 30-year up 21 at 164.23. Now with both notes and bonds, which is pretty amazing folks, we came down Wednesday and Thursday with volume, but they did not break the swing point. This is exactly what has happened folks, the last two times the bond market came down. It came down with some juice, stopped before the swing, takes off topside once again, I expect same thing here, higher price, lower yields coming at us. Kingdoll down 387.6, trade in 92, 678.6, Euro 117, Yen 109.82 and the British pound at 137. As I said, all the indices are an ABC structure in the way up, you're coming into the Labor Day week and it looks to me like they're going to run right into the week, because you've got to remember something here too, we're coming into not only Labor Day weekend, you're coming into window dressing on top of the aspect that you've got everything green, so higher prices, here we come. And what's going to be pretty wild is that if the dollar has one more move like we had out here today, it's going to break the uptrend that the dollar's been in. It's just teetering right on it. What it's done today is that it's come right into it. I mean it's laying right at that line. And if we get that break like we, this is the second time this week we get a big break in the dollar. The dollar went from 93, 505 to 92, 955 on Monday and that was after hitting high last Friday. It took a long time to get up to that high, that march high. It hit the high, it stayed there for one day, gave it up and bottom line looks to me like you're going to get down to 89 and right now you're at 92 and a half, so big move coming. I have a great weekend folks, have a safe weekend. Please tell your friends about TFNN, ask them to go to YouTube, search TFNN, they can subscribe, it's free, check out Tommy, 9 o'clock Monday morning, great show. Have a great weekend folks, have a safe weekend. Sharpening your skills as an investor is


Good morning cyber traders Happy Wednesday everybody good to see you all Nice to be back. Thank you very much Grant Bonnie. Also happy Ash Wednesday everybody Good to see you Don then there you go All right, good Kathleen. All right guys. So yes, I am back and my god.  I'm sitting on a cruise ship I know I keep on hearing about it markets tanking markets and what rights like listen your vacation Let me tell you the greatest thing about going on vacation. Okay, which you always always do do not Hold positions. Okay Do not hold positions I'm gonna tell you a really funny story and then we're gonna go in to talk about everything that's moving I know you had guys did really well with this market little correction over here but I'll never forget my first lesson about a friend of mine that I used to work with in the trading business and And He was going on vacation was so psyched this and that And the same exact thing happened. It was like deja vu all over again. He went on vacation He had left a bunch of open positions. He went to tahiti and you know back over there in tahiti You are not allowed to have any connections back to the real world. So um He came back and when he got on the plane finally got the airport He found out that the trip that he spent Okay, just basically cost him like $50,000 in losses in the market because you know, it's He just thought the market was going to be okay. No issues. I always tell everybody Listen, don't worry about it. You can buy things back the stock market's not going out of business So, um, we're short enough to really didn't work too well for him And that's why whenever you go out on vacation do not Do not hold positions.  You know what I mean?  I'm not worried about it. Oh, I tell you what I'm just happy. I didn't know anything Okay, that's the way how you do it But um, but anyway, uh regarding about the market. Listen Go back to my videos.  Lita been here a long time. You know, Ken You've been here a long time. You know, I talk about this all the time. I said, listen Nothing is going to take this market down. We are having record numbers record unemployment record everything The only thing that will cause this market to go down is a less as a catastrophe You know, like another 9 11 like another major hurricane, maybe a war or what we got is a virus. Okay I've been through this before and I'm happy to say I always survive But there are people right now literally just shaking in their boots and you know what This is what we want, you know Unfortunately, we always get a lot more people that will come to cyber-transfer when the market's coming down Because they don't know what they're doing. You know, I remember that in the financial crisis and stuff But you know what it's gonna it's gonna work out. The question I had is Who know when who knows when it's gonna stop? That's the question. You know, you hear it. Listen, I was on I took a an Uber ride back from my hotel to the airport and You know, the driver, you know happened to listen to our conversation I was go reading through my my phone and stuff and Um, apparently the guy was from Hong Kong. Okay, the driver and he goes and he told me his parents lived there And he goes, you know, he told me he said, uh, you know, everything you heard about what's going on in China He said he has a friend in Wuhan And he's a doctor and he said that There's realistically over 20,000 deaths there. He goes they haven't reported a year China will not allow because he's got a family member over there. That's basically what you say So, listen, the government knows, okay? What's going on? That's why you're hearing a lot of things going on. I spoke to my cousins in Italy They, you know about what happened over there. So believe me, it's gonna get a lot worse and gets a lot better You know until they because the problem is Uh, it's the two weeks now you guys want to watch a great movie. I got a great movie guys to watch tonight Okay, and unfortunately, you know, hopefully never happened, but you'll see the difference Watch the movie outbreak. Remember the outbreak? Anybody here remember the movie outbreak?  Okay When you watch it now and you'll see how scary it is The the the good and the bad thing about that movie is that the virus is only was over in 24 hours This is two weeks. So this is what the problem is They don't know when it's gonna stop and that's what's causing a big big problem here So, um, but anyway, the corona stocks obviously have been doing really really well They've been all over the place. You've seen them. You've done really well with the stocks and uh, and that's basically We're gonna keep an eye on them now regarding about the market. Um, listen There's gonna be a great opportunity to buy listen. Everybody remember the christmas crash, right? We did well on the christmas crash when we had that whole fiasco about shutting the government stuff like that A lot of us bought some great stocks. We bought listen.  Some of you can have a lot of fun Some people are just gonna, you know, just sit there and get beat up by them until you know, hopefully nothing really major happens Anyway, a couple of nice little stocks, uh, want to talk about and uh, I know some of you guys do really well on some of them Starting off with the m uh, m n r a that one did really well. You can see it's moving again So it's going back on the watch list. Just remember guys very very volatile stock big big spread You can see it thing is very volatile just trade less shares of it another good stock, uh, that you guys traded yesterday before I heard And want to bring it up is the c o c p that thing very inexpensive stock cheap 60 cent stock up to 260 nice little runner up right there, you know, uh And you notice them all these corona stocks all pharmaceutical stocks. Remember everybody's going out there And uh, they're doing anything they can to come out with this, uh, anything anything positive about this drug So that one's doing really well Now what else is moving uh all this morning? I want you to keep an eye on a couple other stocks. You got this sls We saw this earlier pretty nasty though. I don't know what's up with that. I mean she got some, um She had some nice moves and then all of a sudden she started getting a little You know, you got just got these 240 to 290 240 right now. She's right in the middle But this stock obviously cheap little stock very inexpensive decent spread great iceberg orders out there You know on the left you could see that one leds another one that is Up 5% nice shares pre-market Not too nice not too friendly But I like the idea that she's uh, she's trading a lot of volume. She's got about 5 000 shares We know about mran and sdc Throw that back on the watch list down 24% It's the only reason why I like this stock right here is she's right here at support levels back in the end of december So stock was at 16.  We saw the stock get crushed from 16 down to 12 You want to hold overnight positions and then let me know how that works out for you Not too well with this one. You know what kills me. Um, any of you guys remember the stock fossil Okay, this stock one day. I remember who's doing a class. I'm like awesome Is this the watches they make the fossil watches this stock was like if I go back in history This thing was like literally I'm like I fell off my chair. I was like, uh, no that's not even it It's obviously it must have been a long time ago. Yeah, you go. This stock was 130 dollars I remember the stock of 2011 two thousand. I'm like really this stock. Are you kidding me? Well, sure enough, you know, I'm like that would have been a great short back in 2014, but anyway, um Stock's taking a really big hit. What's nice about this stock? It's on my short list I don't know if she's on your short list, but she's breaking lower lows. So, uh, that one also looks pretty good I don't know what's going on with fiat, but fiat gapped up pretty big this morning You can see it went from 12 Up to 13 dollars stock also has been taking a big hit from 16 had that big gap down Uh, nice little stock very cheap nice level one. A lot of you guys can afford to trade this stock and nvc Never heard that before. Yeah. Well, guess what she's moving again What do you know did really well with that one when we started the corona virus, right? It went from three dollars to 18 right back down to around seven eight Listen, just don't hold these things overnight guys make the money take the money and run, okay? But uh, but these all these corona stocks are doing really well And if you don't believe me go look at our youtube listen, we broadcasted everything One stock, you know, listen, it's under a dollar, but it did come up on my radar You could see it's on the biggest percentage gainers of 95 right now So this one is also doing pretty nice another pharmaceutical stock. Maybe they maybe they got the secret sauce You know, everyone everyone's got the next corona virus. So just keep your eyes and ears You know open and just kind of jump on the bandwagon But there's another stock that's making a nice little move Uh, a couple of stocks. I just want to mention which I thought was pretty cool. Not that we would trade them, but Look what happened to this stock right here spec. I know you guys did really well with this stock Buck 20 of the 360 look where it is right back down to 91 cents. I guess uh, You know all that spec Elation that they talked about is obviously not true Another one also gapped up really big 60 cents of 260. So listen tpxp could be the next one Who knows but you can see all these very inexpensive stocks. They all made these big jump ups and You know, fortunately, they're all those pharmaceutical stocks. So keep an eye on them All right, so listen pretty big list here Market looks like it's up 83. I was watching it yesterday. It was the same thing We were up what about 100 in in pre-market and then bold we went back down 850. So this could just be you know Listen, don't try to hit the bottom. Don't think it because we're down 2000 points. Oh, this is the bottom That doesn't mean anything. Okay, when you're here when you've been in the business as long as I have And if some of you've been here a long time and you're new to ctu or you're listening in trust me There's a lot more to the story that we you know as a as a day trader before we can start thinking Maybe is this the bottom on a swing trade? Listen, you just heard I don't know if you guys heard But san francisco the mayor is at call in a state of emergency in this in the city Honestly, let me tell you something about that. I gotta throw my two cents for that We all know it's going to san francisco, right with all the Homeless people on there. I mean, I mean as people all over here from all over probably don't know this But san francisco is absolutely just literally I feel terrible beautiful city. It looks like a dump All you need All you need is one of those homeless people to get the coronavirus just one End the story game over Everything is going to change. So, you know, unfortunately for people that are homeless They're the ones that are going to get affected and if they get affected you could see a purge You know what I mean? And that could be that could be a major major problem. So, you know, that's where I personally In concern and I'm going to predict If they feel that the coronavirus does come here and you know, we got a couple of cases If one of those homeless people get it just one It's going to be a total game changer in the market and then how we're going to react to it So let's just hope that doesn't happen. All right, but uh, I could see that whatever that that mayor is probably looking at If I didn't say it, you know about the homeless people that but that's really going to be my prediction Uh, Seattle's same thing. Yeah, listen, Wayne, Seattle has the same problem I'm telling you that's the people you got to worry about It's the homeless people because they don't have a house to lock themselves in other than the tent And they're sitting there walking around everywhere. They don't walk around mass They have nothing and they're the ones that could actually cause the the the virus to to Get really out of control. All right But um, you know, like I said, you know, be careful what you wish for they let these people on the street They don't want to take care of them and if something like this gets out, it can be a major issue for those cities Uh, all right guys. Listen. Good luck today. Happy trading. Uh, don't forget today is a very very big day Just want to remind everyone we have cyber expo today. We have melissa. Um, um, we have john thomas We have myself We're going to start at 12 o'clock one of the three o'clock Up to the time where you guys are going to be ready to start trading the afternoon. Please go out there register the link is up on the screen and You know, we'll see you all there tell you friends about it tweet about it put on facebook You know as much as you can but when we do our cyber expo's these are our biggest events of the of the month All right. Good luck everybody. Happy trading


C-Series is all about bringing in new perspectives, people who are at the top of their professional game, who have something really interesting to offer. Though they may seem like they're not connected, what we really want the students to have an experience with is to think about what are the new questions that we can ask, and how does thinking differently allow us to do that? 90% of the world's data has been created in the last two years, and we've only acted on 1% of it. Think of the opportunity, and I would question the opportunity for what? So the three super tools that have already existed are the spreadsheets, the web, and the smartphone. Each of these are so fundamental to our lived experience now, it is difficult to imagine our world without them. Where we're going now is with the new generation of super tools and the new generation of AI partnership tools that will help us manage the incredible complexity of the world. These stories of the stars and how they connect early civilizations are the oldest things I would contend that we know of as humans. People often think about technologies as sort of cold, clinical aspects of technology, but I have found it incredibly powerful for actually connecting people to one another. I look for how I can maximise the capacity for intimacy through technology. There was an incredibly rich mix of perspectives that were being represented in the room and having all of those voices in one room and watching how people built on each other's arguments as well as some of the clashes was great. What we wanted them to do at the end of the week was to go away and say, oh, I'd never thought about it like that. The one thing that I want them to take away that it might not feel like you're doing the right thing all the time, but you're going to look back at it in 10 years and you're going to have a very concise and beautiful narrative about how you got from A to B and just enjoy the ride.