I think you're confusing sex and gender. Sex is biological, and you could reasonably claim that it is written in our bodies, as well as our souls, if you see a

I think you're confusing sex and gender. Sex is biological, and you could reasonably claim that it is written in our bodies, as well as our souls, if you see a connection between the two. Gender, however, is psychological -- it's how you perceive yourself in relation to societal norms. And it can be fluid, like any other psychological process. Consider someone that told you they were "feeling mad." You can not reasonably refute that statement, as it's purely a statement of internal state and perception. Gender is the same way.