>>11672155Men are selected for/ in competition for a mate.
Women will tend to mate 'up and across' ie with men that are better than they are.
Hence you shift male attractivness up, while female attractiveness can maintain being pretty static.
(Pre industrial revolution 3% of men per generation just didn't have kids. For tribal bushmen this figure is an astonishing 40% as the chads just bang every chick possible)
