But this one is interesting: aggregated across all of humanity's history, far
fewer men (than women) have descendants who still live today. In other
words, the average man is much less likely than the average woman to
leave his/her genes hanging around.
Also, a researcher is speculating
that this may be a reason why men are hardwired for aggression and
what not.
Recent work in connecting psychology, anthropology and evolution is
quite interesting. Some of it will turn out to be fallacious, of course.