I dunno what movie you ' re thinking of , dude . Demolition Man was Sylvester Stallone and Sandra Bullock P <| sep |> Neither is stronger or weaker than the other , they are claims about completely different things . It ' s not semantics . What words mean is literally semantics . Well yes , it literally is scientific evidence . But fortunately that was just a confirming observation , not the main point . Cultural anthropology belongs to the humanities , and if you want my opinion , nearly all anthropological study does , though some of it would certainly qualify as social science . Without knowing what you ' re more specifically referring to though I can ' t say more . Even if that were true , you ' re making my point for me . The fact that they need sub categories means that the strict binary system is incomplete at best . Hmm , no . Two overarching categories with subcategories can be a binary or , perhaps more accurately , a series of binaries . The point is that in no categorization scheme can a genderqueer male and a genderqueer female possibly belong to the same category . But of course your claim is nonsense . Fa ' afafine are one of the most well known third genders and one of the defining features is that the gender isn ' t a sub category of either gender . Fa ' afafine are women by modern western standards and , I would argue , by Samoan standards , and the majority of them are perceived as feminine , and their partners are mostly heterosexual men . But , I can ' t honestly claim to know much more . The section goes on to explain why the evidence suggests that psychologists should accept this position . Yes , it suggests that they should accept this position for the benefit of the trans people they serve . I don ' t actually think that ' s a good enough reason . And , I don ' t think this link demonstrates that a consensus exists at all . There ' s a lot I could say about APA politics , but , their official stances are determined by majority vote , which of course is antiscientific . You can call it whatever percentage you like , you still need to defend your position . Oh , okay , well , what claim specifically would you like me to source ? Population figures ?