Unreliable? Really!? Of course they won't predict everything, but as a predictor of economic success they are unparalleled. Is it just coincidence that the average 'Third World' IQ is significantly lower than that of the 'First World?'
I know you don't want to believe it, but the evidence is all around. Have Blacks as a whole been able to create a well-run, functioning, liberty-loving government set under the 'rule of law?' Ever? In all of history? Yes of course our governments have plenty of flaws, especially now, but the overall answer is no.
Why is everyone OK with admitting racial physical differences, but suddenly squirm when intelligence is mentioned? Could the desire to not hurt feelings be getting in the way of obvious truth?