'Packed with fresh and clear insights that will change the way you think about the world' Uri Gneezy 'One of those books that you pick up and then can't put down' Steve Stewart-Williams 'This is a book I will come back to again and again' Nichola Raihani How game theory - the ultimate theory of rationality - explains irrational behaviour. In Hidden Games, MIT economists Moshe Hoffman and Erez Yoeli find a surprising middle ground between the hyperrationality of classical economics and the hyper-irrationality of behavioural economics. They call it hidden games. Reviving game theory, Hoffman and Yoeli use it to explain our most puzzling behaviour, from the mechanics of Stockholm syndrome and internalised misogyny to why we help strangers and have a sense of fairness. Fun and powerfully insightful, Hidden Games is an eye-opening argument for using game theory to explain all the irrational things we think, feel, and do and will change how you think forever.