Evolution of new traits, yes. Elimination of undesirable traits can be much faster if the environmental selection pressures are strong enough. Because all you're doing there is pruning back the genetic tree instead of mutating something new.
So that implies that either we don't currently have wide enough sexual dimorphism to let bitches still cry and boys not, a la nipples. Or the selection pressures aren't actually that strong.
Because its a desirable trait early in life, with a baby, that helps increase the odds of survival because of how useful it is for the babies. All removing it would do is make male infants die more often, which only makes all the problems worse.
And all the social pressures in the world can't beat that biological fact, and the tear ducts don't just dry out with age because they continue to see use in things like heat and illness reactions.
Evolution of new traits, yes. Elimination of undesirable traits can be much faster if the environmental selection pressures are strong enough. Because all you're doing there is pruning back the genetic tree instead of mutating something new.
So that implies that either we don't currently have wide enough sexual dimorphism to let bitches still cry and boys not, a la nipples. Or the selection pressures aren't actually that strong.
Because its a desirable trait early in life, with a baby, that helps increase the odds of survival because of how useful it is for the babies. All removing it would do is make male infants die more often, which only makes all the problems worse.
And all the social pressures in the world can't beat that biological fact, and the tear ducts don't just dry out with age because they continue to see use in things like heat and illness reactions.
Evolution isn't a single factor process.