Leanleft on the inherit fallacy of The Bell Curve:
Try it this way. Duke Ellington is a genius. Dr. Carver is a genius. John Rocker is a moron. History demonstrates that all races are capable of producing genius, and all races are capable of producing people so stupid you wonder if they will forget how to breathe, and of producing both in large numbers. In both “races”, history shows us that genius is rare but not unknown, stupidity is less rare, and the vast majority muddle along in the middle. From a practical stand point, it does not matter if the median white is dumber than the median black. As a society, you must allow for the geniuses of both groups to flower, and build institutions to contain the damage the morons of both groups could do. To do otherwise would be to doom your society, in the long run.
(Not to pick on Kevin overtly much, but the above is also a good example of the false dichotomy of US race relations, which is
almost entirely viewed in black and white: other ethnic/racial groups often seem to be ignored in discussions like this.)