Twenty-five years ago, author Malcolm Gladwell published "The Tipping Point," about how ideas and behavior spread in a society to create positive change. The book was an international bestseller, having since sold over 2 million copies in the U.S. alone. In his follow-up, "Revenge of the Tipping Point," Mr. Gladwell looks at the downside of social epidemics, including the rise of opioid abuse and Medicare fraud.
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