First paragraph

Hi Gordon, I agree with you in that the change in subjects is abrupt. I think moving the definition of gender and sex into paragraph 1 is a great idea!

Thanks Jaimie and Charly, I've removed the "Gender" portion from "2.3" into "2.1" and am editing it as well as adding a bit more on the History.

Kind of got stuck on editing that first and second paragraph for a long time, but I think I've smoothed it out.