The best-selling author of Blink identifies the qualities of successful people, posing theories about the cultural, family, and idiosyncratic factors that shape high achievers, in a resource that covers such topics as the secrets of software billionaires, why certain cultures are associated with better academic performance, and why the Beatles earned their fame.

In this thoughtful treatise spurred by the 2015 death of African-American academic Sandra Bland in jail after a traffic stop, New Yorker writer Gladwell (The Tipping Point) aims to figure out the strategies people use to assess strangers-to "analyze, critique them, figure out where they came from, figure out how to fix them," in other words: to understand how to balance trust and safety. He uses a variety of examples from history and recent headlines...