May 10, 2016 by CH
Via Mangan (Twatter link: @Mangan150), the reason why monogamy beat polygamy:
It all comes down to paternal certainty. Where (beta) men are reasonably assured the kid is theirs, civilization can flourish. Where men have no idea if the kid is theirs or some other (alpha) dude’s, chaos, dysfunction, and indigence reign supreme.