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Justin Fox is editorial director of the Harvard Business Review Group and senior fellow at the Mossavar-Rahmani Center for Business and Government at Harvard Kennedy School. He is the author of The Myth of the Rational Market: A History of Risk, Reward, and Delusion on Wall Street, a New York Times bestseller and Notable Book of 2009. Before joining HBR Group in 2010, he wrote a weekly column for Time and created the Curious Capitalist blog for Time.com. Previously, Fox spent more than a decade as a writer and editor at Fortune magazine. He blogs at hbr.org, and is on Twitter at @foxjust.
After the fall of the Wall in 1989, Berlin had very cheap housing and industrial space, some in spectacularly grand old buildings. Years of division—with repressive communist rule on one side of town and isolation and economic stagnation on the other—had left the city depressed and underpopulated. Reunification initially only made things worse, as uncompetitive Eastern-side state-owned factories closed en masse.