Gender

[Belacqua]

Both science and observation have ruled out genitals or sex chromosomes as being the absolute definitive markers for gender. 

I'm curious about what science tells us here. Beyond simply listening to the subject, what objective "markers" do we have for gender?

Someone who identifies as a man might not have a penis, but if they meet enough of the other criteria for being a man (whatever these criteria may be), then they shouldn't be precluded from being considered by society as a man.

It's the "other criteria" I'm curious about. 

People used to say that boys played with trucks and girls played with dolls. That doesn't seem to be the case any more -- this is no longer a criterion of gender. 

Surely it isn't something superficial like wanting to wear a dress. Men can wear whatever they want and still be men. 

I take the self-reporting of the subject seriously, but I'm still not seeing it as in any way objective, empirical, repeatable, or scientific. 

And if someone wants to be treated as a man I'll treat him that way. It's no bother to me at all. But that's because I share the liberal ideology that is dominant now among people in our time, place, and social class.