> A big part of "The Bell Curve" was arguing that no interventions could change IQ except genetics and so any money spent on low IQ people (African-Americans in

> A big part of "The Bell Curve" was arguing that no interventions could change IQ except genetics and so any money spent on low IQ people (African-Americans in the book, but the author followed up by attacking poor people more generally) was a pointless waste. It should be self-evident that you can lower IQ through environment (injury, developmental issues, malnourishment, etc.). So even if you believe there's a genetic ceiling to IQ, Flynn effect (and reverse) don't contradict that.