what about physical strength and the inclination for socialization? These traits vary on both genders, but generally all men are physically strong, all women are physically weak(er); and generally all women have inclination for socialization, all men have less inclination for socialization.
Other traits that largely vary within one gender, probably also largely vary between genders, so these cancel out.
I might be wrong about this last point though, but to just shrug this off as if this is taken completely out of the blue and rarely intuitively observed in day-to-day life, is not fair.
that's what I meant. You wouldn't give them to whoever not needed them. I called them man, you called them people without uterus. In other words, you don't want to treat all equally.