I’d like to propose a thought experiment. Suppose the sciences of biology and medicine advanced to the stage where it became possible to change the sex of an animal (including, of course, human animals) completely. Let me make a few more stipulations. The change would be complete at every level. A woman transitioning to become a man would grow a penis and testicles; a man transitioning to become a woman would grow a vagina, clitoris, ovaries and breasts. These organs would be fully functional. T