First published 2025
Steven Pinker examines common knowledge, the phenomenon where we think about what others think about what we think. This shared awareness drives coordination in everything from traffic patterns to currency use to political movements. Humans possess an intuitive sense for detecting when information becomes publicly known, creating it through laughter, eye contact, and direct speech. Yet people also work hard to prevent common knowledge, maintaining plausible deniability through veiled threats, sexual innuendo, and deliberate blindness to obvious problems. Pinker reveals how this hidden logic explains financial bubbles, sudden revolutions, diplomatic theater, social media pile-ons, and first date awkwardness. He draws on novels, comedy, and films to illustrate these social dynamics, answering why people hoard supplies during crises, why voters choose electable candidates over preferred ones, and why complete honesty would make life intolerable. The book offers readers a framework for understanding the paradoxes of human coordination and the delicate balance between transparency and pretense that governs social life.
Genres: psychology, social-science, non-fiction, academic
Vibes: informative, intimate, thought-provoking
Tropes: social-dynamics, transparency-vs-pretense
384 pages · Hardcover · Scribner