Why does the stock exchange dip during a lunar eclipse? Why don t cars with safety features lead to fewer injuries? Why did Nehru ignore the Chinese threat in the lead-up to the 1962 war? Why is it that a stranger might risk his life to save yours on one day, and a street full of passersby might casually watch you bleed to death on another? In pithy, sparkling, bite-sized chapters, economists Vivek Dehejia and Rupa Subramanya tackle these seeming...