When Everyone Knows That Everyone Knows

描述

Author: Steven Pinker

Publisher: Scribner

It sounds impossible, but Steven Pinker shows that we do it all the time. This awareness is called common knowledge, and it has a momentous impact on our social, political, and economic lives.

Common knowledge is necessary for coordination, for making arbitrary but complementary choices like driving on the right and coalescing behind a political leader or movement. It’s also necessary for social coordination: everything from meeting up at a time and place to forming enduring bonds of friendship, romance, or authority. Humans have a sixth sense for common knowledge, and we create it with signals like laughter, tears, blushing, eye contact, and blunt speech.