The conclusion begins by noting the difficulty of defining “human,” let alone male and female, woman and man. I then explore what we can learn from the reactions of “self-identification” in racial matters, specifically the controversial case for “transracialism” in the well-known example of Rachel Dolezal. I then conclude by describing and applying a framework for regulatory definitions involving sex/gender that is loosely analogous to the levels of scrutiny used in U.S. constitutional law to determine the legality of government regulation based on demographic characteristics.