In The Undoing Project, Lewis brings his narrative gift to the fascinating collaboration between Daniel Kahneman and Amos Tversky, whose Nobel Prize-winning theory of the mind altered our perception of reality. Kahneman and Tversky showed the ways in which the human mind errs, systematically, when forced to make judgments about uncertain situations. By undoing our assumptions about the decision-making process, Kahneman and Tversky's breathtaking work created the field of behavioral economics, advanced evidence-based medicine, led to a new approach to government regulation, and made possible much of Lewis's own writing on topics from business to baseball. The characters at the center of this story have the dramatic complexity of great literary figures, heroes both in the university and on the battlefield. Their breakthrough ideas were deeply linked to their extraordinary life experiences.