Lawrence Summers, the former president of Harvard, was hounded from office for suggesting that one of the reasons that women don't make up half of those at the top of science and engineering is that women don't make up half of those at the top of the math ability spectrum. Summers was invited to speak to the University of California regents recently. The faculty got up in arms, and got 150 signatures in a couple of days. Maureen Stanton, organizer of the petition drive, said "I was appalled that someone articulating that point of view would be invited by the regents," Stanton said.
This is why people despise political correctness. I think Summers is right. Even if you don't agree, the issue is an important empirical question, which can be addressed empirically. That is what universities are for. Perhaps the University of California regents could look into that. But no, they had no more spine than the Harvard trustees. They rescinded the invitation.