https://en.wikipedia.org/wiki/Radical_flank_effect
demography: https://twitter.com/conradhackett/status/974750991756283904
+
+http://sinesalvatorem.tumblr.com/post/172312442416/trying-to-talk-to-trans-people-about-their-sexual any scale that involves "pretending you’re a woman" in the instructions is OK by me
+
+http://sinesalvatorem.tumblr.com/post/172395616411/explanations-for-distinct-clusters-of-transgender
+
+https://www.scientificamerican.com/article/blood-boundaries-should-transfusions-be-matched-by-sex/