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symmetry · 4236 days ago · link · · parent · post: George W. Bush is smarter than you | Keith Hennessey
Well, shorter people may have another intelligence factor that would effectively cancel out your thinner air theory. Less height means less length means less distance from heart to brain, so the shorter the person, the better the oxygen supply to the brain. But now that I think about it, if the heart is closer to the ground, it will have to work harder to push blood against gravity since the force of gravity gets stronger as distance to the center of the earth decreases. So I guess you're right. Sorry I misjudged you!