Well, the mods get to decide what is here. Content tends to fluctuate and it seems we are having more discussions in this subforum related to identity, whether the OP intended it or not.
Getting to the nuts and bolts, I don't have to present as a woman to be a woman. Presenting is expression and being a woman is identity. But like Melissa (and many others) it starts with how I feel. Then it goes through the things like body modifications I choose. I may or may not use hormones. I may or may not get surgery. Everything else I do is variable. I only have to feel, the rest is my choice. I know that really broadens it, but it is the base starting point.
They are. And then the get unhappy when called out. Consistency is important to be believable. Evolution is fine, most of us do. But inconsistency is identifiable.