hirty years ago, when John Naisbitt was writing Megatrends, his prescient vision of America’s future, he used a simple yet powerful tool to spot new ideas that were bubbling in the zeitgeist: the newspaper. He didn’t just read it, though. He took out a ruler and measured it. The more column inches a particular topic earned over time, the more likely it represented an emerging trend. “The collective news hole,” Naisbitt wrote, “becomes a mechanical representation of society sorting out its priorities”—and he used that mechanism to predict the information society, globalism, decentralization, and the rise of networks.