I didn’t make that argument. The argument is that those attending the institutions are dumber than the Asians and whites they’re replacing (edit: at the margin, obviously), because schools unfairly discriminate in their favor. These aren’t pygmalion geniuses from the ghetto, they’re middle-class kids with cell phones and laptops. Half of black Americans in the Ivy League are from post-civil war immigrant stock. An over-represented minority.