What was the worst prediction of all time?

Eric Topol, director, Scripps Translational Science Institute

In 2006, David Pogue wrote in The New York Times, “Everyone’s always asking me when Apple will come out with a cell phone. My answer is, ‘Probably never.’ ” Not long thereafter, Apple introduced the iPhone. Smartphones are set to become the fastest-adopted technology in history—by 2020, 80 percent of the world’s adults are projected to have one in their pocket.