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I don't believe that intelligence can be reduced to a number, frankly. But I can see how doing exactly that produces a useful sorting mechanism in our society in order to separate children into categories of promising and doomed. The tests seem arbitrary and without real scientific value and yet have lasting consequences.

I know from my own experience that there is much more to 'intelligence' than an IQ number. In fact, I hesitate to believe that any system could really reflect the complexity and uniqueness of one person's mind, or meaningfully describe the nature of his or her potential.

For a crowd to be smart, the people in it need to be not only diverse in their perspectives but also, relatively speaking, independent of each other. In other words, you need people to be thinking for themselves, rather than following the lead of those around them.

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

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

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.

People are smarter than you might think.

The people who work in intelligence work are more conscious, more apt to be attentive.

There is no such thing as an underestimate of average intelligence.