Once again, I'm not saying that male and female brains have no differences, I'm saying that there is no indication that these differences force us to think in different ways, give us different aptitudes, or can be used to categorize human beings to the degree that many people seem to want to do.

I don't doubt at all when transgender folks says they felt like a certain gender inside of them from a very early age. We just have no proof whatsoever that having "a male brain" means the things that so many people want to ascribe to it. I look forward to continued advances in neuroscience that will help us to better understand how the brain works, for both cis and trans people.