They say they can predict sex 69% of the time, and use that as evidence to hypothesize that the differences between sexes aren't just cultural, they are probabl

They say they can predict sex 69% of the time, and use that as evidence to hypothesize that the differences between sexes aren't just cultural, they are probably biological too. Not agreeing or disagreeing with the biological differences part, but I do think 69% seems pretty low to use as evidence for such a claim. Seems like cultural forces and gender stereotypes could probably explain enough of that difference.