About the Book: In When Everyone Knows that Everyone Knows…, cognitive scientist Steven Pinker explores the concept of common knowledge—the shared awareness that shapes our social, political, and economic behavior. From financial crashes to cancel culture, awkward dates to diplomatic games, Pinker unpacks how our attempts to think about others’ thoughts drive both connection and conflict. Blending psychology, behavioral science, and social theory, this insightful book reveals the hidden logic behind human interaction and group dynamics.