An original evolutionary and sociological account of the emergence of those economic institutions that manage not only markets but also the world's myriad other affairs. Drawing on insights from biology, anthropology, history, psychology, and literature, Seabright explores how our evolved ability of abstract reasoning has allowed institutions like money, markets, and cities to provide the foundation of social trust. But how long can the networks of modern life survive when we are exposed as never before to risks originating in distant parts of the globe? This lively narrative shows us the remarkable strangeness, and fragility, of our everyday lives.