How Markets Fail offers a new, enlightening way to understand the force of the irrational in our volatile global economy. Why do many people contribute generously to charity but fail to save for their own retirement? What is the economic answer to global warming? Using fascinating new insights from behavioural economics, and vivid contemporary and historical examples, Cassidy explains that individual behavioural biases and kinks—such as overconfidence, envy, and a sense of altruism and fairness—all help us understand the world in ways that rational-choice economics does not. This is the book that explains both the current moment and such past and future moments. We will continue to get things wrong. But at least now we will be having the right conversation.