> Smart people are more aware of the things they don't know. Possibly, but I think it's more about insecurity. If you're less certain of your position, it's h

> Smart people are more aware of the things they don't know. Possibly, but I think it's more about insecurity. If you're less certain of your position, it's harder to "concede points". So yes - the good people say "I don't know", but maybe that's just because they can get away with it more easily (lower cost for them).