The Odds We Live By

How Prediction Markets Reveal the Science of Human Behavior

Prediction markets synthesize scattered information about the future into real-time odds, revealing how people think, decide, and influence one another under uncertainty. This book argues that platforms like Kalshi and Polymarket are not merely betting sites—they are living laboratories where psychology, money, and social influence intersect. Through a conversational, accessible lens, readers will learn how prices encode probability, how incentives steer decision-making in adults and children, and how market design, cognitive biases, ethics, and probabilistic thinking shape policy, education, business, and everyday life. The aim is to equip readers with practical tools to read market signals, reason under uncertainty, and think more clearly about tomorrow in a probabilistic world.