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Under the right circumstances, groups are remarkably smart - smarter even sometimes than the smartest people in them.

People's intelligence tends to be in inverse proportion to their number. People don't tend to get smarter as they get into bigger groups.

I am not sure that I am that smart. I think we work harder. When I was at university, there were a lot of smarter people than me, and they seem not to have done quite so well.

Nothing has caused the human race so much trouble as intelligence.

Humanity is smart. Sometime in the technology world we think we are smarter, but we are not smarter than you.

Blacks in the Caribbean, Britain, Canada and sub-Saharan Africa as well as in the United States have low IQ scores relative to whites.

Quite a few people feel uncomfortable when faced with the claim that the Jews are the world's smartest people. In our politically correct era, one is not expected to argue that one group within humanity has an advantage over all the others.

I don't think there's anything unique about human intelligence.