Endogenous Sexism?

Claim: Even in this rarefied setting, sexism will endogenously arise.  Men will find the men they personally know to be better than the women they personally know.  Women will find the women they personally know to be better than the men they personally know.  And if people extrapolate from the people they personally know to all humanity, men will think that men are better than women, and women will think that women are better than men.

Read the whole article before commenting. I thought it was an interesting exercise, and sure to make a certain subset of readers irate. Via Endogenous Sexism, Bryan Caplan | EconLog | Library of Economics and Liberty.