Hereditarian model holds black-white IQ gap mainly caused by genetic racial differences. Kaplan's racism X-factors vague, lack mechanisms linking to IQ depression. Simulations misspecified, ignore psychometrics, provide no support for X-factors. VE model impossible: average black environment must match worst 99% whites. Environmental diffs like SES explain at most 1/3 gap. Black crime overrepresentation reflects actual offending, not media bias. Police stops rational due to black criminality, not racism. No net anti-black labor discrimination – affirmative action favors blacks. Housing rejection rational: blacks linked to crime, decay despite matching. IQ gap tracks g-loadings (Jensen effect r=0.63), genetic hallmark. Non-cognitive black-white diffs absent, contradicting X-model. HM fully testable unlike vague environmental claims. Behavioral genetics stronger than discrimination quasi-experiments. Familiality of IQ gap unexplained by random racism. Only 1.7% blacks report frequent racial mistreatment.