Do you believe the gender gap is real?

[nclib]

Absolutely. Yes, there are some different choices of men and women, that lead to different pay (which I don't think is coincidental to gender). But it is not just this.

Even if pay discrimination were only due to the motherhood penalty (it's not), this still would be discrimination. If we take the perspective (I don't) that mothers are/should be more responsible for childrearing than fathers, and therefore have less time/energy to devote to work, this would simply that fathers are still doing more childrearing than childless men (and supposedly therefore less dependable at work). But not only do fathers not lose money after their child is born, they actually gain money.