“The more you look at ‘common knowledge,’ the more you realize it’s more likely to be common than it is to be knowledge.” —Idries Shah It’s commonly assumed that one of gold’s primary utilities in a ...

Welcome back to another 50-50 quiz! These 40 general knowledge questions cover everything from history and science to ...

From using words to overthrowing regimes, shared awareness is necessary for people to coordinate. The cognitive scientist explains to Nature how it works. When Everyone Knows That Everyone Knows...: ...