After all, we're in the meritocracy business.
Update: Some of the commenters both here and over at Hacker News seem to be struggling with the math part of the argument, which is that even if there are biological differences in ability, they are not large enough to explain the observed outcome. I'm not much of a statistician, so I am indebted to @hypatiadotca who shared this excellent and brief presentation byTerri Oda. It is so much better than my own attempts to argue the point that I am including it here. Enjoy: