Siskind is very thoughtful and reads a lot. If, after weighing the evidence, he concluded that some of the white/black difference on IQ tests is probably genetic, that does not make him a bad person or a "white supremacist", unless he has advocated denying civil rights to blacks. He has not done so.<p>There is much current discussion of how to deal with racial disparities in outcomes in employment and education. What to do about them depends on what factors cause them, which should be studied objectively.