Everywhere people wait—at airports, cafés, hospitals, or theme parks—the same invisible laws of motion are at work. The Geometry of Waiting explores the elegant, mathematical, and psychological systems that keep queues (mostly) fair, efficient, and riot-free. This isn't just a book about patience; it's about precision. Combining physics, design, and human psychology, The Geometry of Waiting reveals how the simplest social structure—the line—balances chaos and order, competition and cooperation. Through lively examples from everyday life, the book shows how tiny changes in structure and expectation can transform frustration into flow.