@makeworld @viraptor @aimaz @bontchev ah yes, quoting wikipedia, the most robust of sources.
Stop and think for a moment about what an IQ test involves. I still remember the one that I took as a child that labelled me a 'genius'. If you can't see how much of those tests are far more about culture and assumptions about what constitutes "general" knowledge than they are about actual cognitive ability then of course you don't see how they're racist. But you're wrong.
@makeworld @viraptor @aimaz @bontchev and if that's not sufficient to convince you, then how about the Flynn effect? When modern children take the old versions of the test the average scores are significantly above 100 (which is meant to be the baseline average).
An actual robust measurement of intelligence doesn't produce wildly different results by generation. IQ is just astrology for well educated white people. See also Myers-Briggs.