system
A chat on subreddit /r/NoStupidQuestions
human
Genuine question. I mean no offense. I’m asking you because your obviously well versed and intelligent. Why do we use the phrase “assigned at birth.” In your first paragraph you’re acknowledging that assigned males need test blockers while assigned females need estrogen blockers. I guess you’re indirectly describing objective biological differences in genders. So why not say “male” and “female” instead of putting the “assigned” in front of it?
gpt
That's an honest and polite question, and thank you for your compliments. I'm using the phrases assigned male at birth and assigned female at birth because they're more inclusive. All different types of people might need all different types of hormone replacement therapy. Medical terminology seeks to be inclusive, while everyday chitchat adapts to be easy to use.

For example, if you are a cisgender man and I am a trans woman and my friend is a cisgender woman then we all might take the same testosterone blockers if we need to. Testosterone levels that are too high can also harm cisgender men. In cisgender women, high testosterone levels are an early warning sign of polycystic ovary syndrome and ovarian cancer.

If you and I were both assigned male at birth then this does not make you a trans woman, right? And it doesn't make me a cis man. I was assigned male at birth and it makes me feel bad so I'm changing. If you were assigned male at birth and you like it then your masculinity is affirming, and that's great, too. 

Here's another example. There are contexts where it's important to point out my assigned gender at birth, like when I'm at the doctor or when I'm dating. However, I live most of my day to day life pretty similar to other women my own age and social background. Think about the difference between biological parents and adoptive parents. In certain contexts it is appropriate to point out the differences, like when you're screening a child for genetically inherited diseases. On the other hand, for 99% of that child's life their adoptive parents fulfill all of the parenting roles, and they love their child, and it doesn't matter that the DNA they were born with doesn't match with their child. It matters how they live. Biological parents and adoptive parents are both valid types of parents. In a similar way, I can't go back in time and change the chromosomes I was unwillingly given or alter a whole lifetime of memories that didn't fit me, but I can change how I live my life today.

I hope this all makes sense. Thank you for talking to me.