The hidden logic of human harmony | Steven Pinker

In this TED Talks Daily episode, host Elise Hu introduces experimental cognitive scientist Steven Pinker, who discusses the concept of "common knowledge" and its significance in society. Pinker explains how common knowledge, where everyone knows that everyone else knows something, is crucial for coordination in various aspects of life, from personal relationships to global norms. He uses examples ranging from a couple trying to meet in Manhattan to the dynamics of public protests and financial markets, illustrating how shared understanding and awareness shape our interactions and behaviors. Pinker warns that the norms underpinned by common acceptance are currently under threat, emphasizing the importance of understanding and preserving these shared understandings for societal harmony.