A revealing and tremendously entertaining look at how the world of luck really works. Freakonomics showed how economic calculations can explain seemingly counter-intuitive decision-making. Thinking, Fast and Slow helped readers identify a host of small cognitive errors that can lead to irrational thought. In What the Luck? Gary Smith explains - in clear, understandable, and witty prose - how a statistical understanding of luck can change the way we see just about every aspect of our lives. We underestimate the importance of luck!