I hold onto heredity. Genes must be present in order to be passed along.
This is true.
Randomness ignores heredity, claiming that changes come by chance.
Hmm, no, not really. The changes do come by chance, but the random mutation aspect of it does not ignore heredity at all. In fact, its an integral part of the process.
You see, we know random mutations happen. They are errors in the copying process. How do we know they happen? Because of genetic disorders and how they present. There are lots of them to chose from.
But let me show a little bit about how it works. Lets say we have a strand of DNA that looks like this....
There are a few ways we can get things to happen here. First, we can have a single letter change... for example the third letter somehow (randomly, by chance. As an error in the copying process) is changed to a T. Now, when that DNA strand codes for a protein, (or is part of the on / off sequencing of the coding), that random mutation gives a certain characteristic that is different than it would have been previously. (For the sake of understanding, lets say it is... fur pigmentation in a rabbit or something). If that particular difference makes a change that is beneficial to the individual (for our rabbit, if they live in the arctic, lets assume that maybe the fur is a bit more white than that of his neighbors), then that particular individual will be more likely to pass on its DNA (new and improved) to the next generation simply by being better adapted to survive in that particular environment. You've already agreed to heredity, so that's not up for discussion.
Another way it can happen is to have an ADDITIONAL letter added in. Maybe add a T in between the first 2 G's up there. In that respect, everything on down the line is going to be effected (pushed down one), and depending on where this addition is, this can have massive effects on the DNA sequence. If the addition is late in the DNA strand, the effects might be less noticeable than if it were early in the sequence pushing everything on down the line.
There are a few other ways that I can't remember off hand right now, but you get the point here. These random changes (errors in the copying process for whatever reason) can be either good, bad or completely benign to the organism. Do you see that now?
Which ignores natural selection, which claims that whis is is better than that which was.
Really? So with our rabbit in the previous example... if his random mutation gives him fur that is a bit more white than other individuals of his species... and he's living in the arctic; does that offer him it a better chance at survival? Of course it does. That one tiny copying error just happened to give the rabbit less fur pigmentation, and therefore an increased chance of survival over its neighbors. What is the deciding factor between passing the genes on or not? It's whether the rabbit gets killed (maybe by a wolf with good eyesight) before it mates. In the arctic, does a white rabbit or an off white rabbit have a better chance to pass on it's genes? The white rabbit does, obviously.
Now that one tiny error MIGHT have given the rabbit increased muscle length, or better vision, or better hearing.. or it might have made it slower, or darker in color, or decreased it's sense of smell. Natural selection determines whether or not it was beneficial simply by whether or not the new trait helps the individual live or die. That's it. It's as simple as that, really.
which ignores heredity which claims that the genes of a progeny must be passed by the parent.
which ignores randomness through the claim that what is has been passed by one who has it already
No, and no.
Evolution has taken these thrown them in the soup of the past, and said it is how we were made.
Because it offers the very best explanation as to how all life came to be. Not because we like it, or because it's super cool and all we want to do is mash any silly creationist nonsense. It's because it explains in great detail how all the facts fit together.
Really, its not a conspiracy against you. Even if evolution wasn't true, creationism or ID would still be utter bullshit. It just so happens that evolution IS true. It would be true regardless of what invisible sky man you or anyone else thinks exists.
Not scientific. Not rational, not logical.
You're absolutely wrong here. It's all 3. Very much all 3.
Faith. That is all evolution is.
No, it's not. Faith is belief in the absence of evidence. The evidence for evolution is overwhelming. You may claim what you like, but you're just wrong here. Evolution happens. Sorry.