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by patmcc 1 hour ago
SAT isn't a perfect IQ test but it's not bad for a first-pass filter. Nearly all who scored 1600 will be bright and nearly all who score 800 won't be.

It's a bit like BMI. Yes, if you're Peter Dinklage or Arnold Schwarzenegger it will be pretty meaningless. But most people aren't and BMI works pretty well for them.