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...: ...

You don’t buy me, borrow me, or steal me, I’m handed over freely at first. Break me once, and I change forever, and I am challenging to repair. Keep me well, and I multiply. What am I? Trust. Some ...

Most scholars think the earliest texts that discuss Jesus date to decades after he lived, which makes it difficult to understand what Jesus' life was like. Even the year of his birth — the foundation ...