Sean Carroll in Preposterous Universe:
In the service of seeking truth, there would seem to be value in intellectual diversity, both in keeping ourselves honest and in the possibility of new ideas coming from unexpected quarters. That’s true in the natural sciences, but even more so in the humanities and social sciences, where the right/wrong distinction is sometimes less clear. But academia isn’t always diverse; as an empirical fact, there are a lot more liberals on university faculties than there are conservatives. I talk with Musa al-Gharbi about why this is true — self-selection? discrimination? — the extent to which it’s a real problem, and how we should better think about the value of diverse viewpoints.