I'm working on this bit now about trans people. It revolves around this idea that right now scientists have kept brains alive in jars and are saying that a human head transplant is imminent.
That's happening now.
So, let's fast forward 1000 years or how ever many years you think it would take for brain transplants to be possible. Now lets say we take your brain and put it into another body. Let's do that 100 times. A thousand times. A million.
I would think it wouldn't take long for you to realize sex, gender, race are all arbitrary.
You are whatever you say you are because the mind is everything.