The logic of comparative advantage is hard to argue against, but I wouldn't be so quick to assume that comparative advantage is being ignored here. In our culture, the kinds of people that go into fields like physics and math at least stereotypically have -- when they're choosing majors -- less socialization than the kinds of people who're going into psychology and sociology, and it's plausible to me that socialization and related skills have as much to do with success in those fields as raw intelligence does.