Ed:

I understand your confusion. There is a lot out there. "Common sense" as a sound and prudent judgment based on a simple perception of the situation or the facts. The problem is your perception of facts. Sex is what is between your legs and gender is what is between your ears.

I wrote my additional thoughts on this in https://medium.com/prismnpen/please-dont-be-gender-ignorant-6933f705612f

Best regards,

Emma