High IQ in a modern test is about pattern recognition. I haven't seen it pointed out yet, but oversensitive pattern recognition can lead to illusions. I.e. if

High IQ in a modern test is about pattern recognition. I haven't seen it pointed out yet, but oversensitive pattern recognition can lead to illusions. I.e. if you didn't sleep for two days, you can start "seeing" weird stuff sometimes. It's cause you brain is hallucinating something that isn't there, but because you see something, brain recognizes pattern and alerts you before checking against other patterns and common sense. So I'd imagine that if someone is very good at pattern recognition they could have very high IQ but also not have enough erudition to check if the patterns they see is actually there. Which arguably what could have happened in Yudkowskis case, since he scored very high on IQ, but dropped out of middle school.