New in paperback. Hardcover was published in 2024. The comprehensive book outlines how Herbert Simon came to be the only person to receive both the Nobel Memorial Prize in Economics and the Turing Award in Computer Science. Elucidating how Simon freed the study of human behavior from the dictates of subjective expected utility theory and Bayesian theory, chapters discuss how he instead promoted the development of empirically based theories on the behavior of individuals, organizations and machines.