Theory of Games and Economic Behavior

Theory of Games and Economic Behavior is the 1944 treatise by John von Neumann and Oskar Morgenstern that founded game theory as a mathematical discipline. The book's central achievement was proving that rational choice under strategic interdependence has a determinate mathematical structure — the minimax theorem for zero-sum games and the characteristic-function approach for cooperative games. It is not merely a technical work but a methodological manifesto: the claim that economic behavior, properly understood, is strategic behavior, and that strategic behavior requires a mathematics of its own.

The book's influence extends far beyond economics. Its concepts of utility, equilibrium, and coalition structure became the lingua franca of political science, evolutionary biology, and artificial intelligence. Yet the work remains poorly understood by those who cite it most often: the distinction between the book's mathematical apparatus and its interpretive claims — claims about what it means for an agent to be rational — is rarely preserved in subsequent usage. The concept of revealed preference, which would later displace the book's axiomatic utility theory, is already present in embryo in Morgenstern's insistence that behavior, not introspection, must ground economic theory.