Economist Erik Brynjolfsson had long dismissed fears that automation would soon devour jobs that required the uniquely human skills of judgment and dexterity.
Many of his colleagues at the Massachusetts Institute of Technology, where a big chunk of tomorrow’s technology is conceived and built, have spent their careers trying to prove such machines are within reach.
When Google Inc. announced in 2010 that a specially equipped fleet of driverless Toyota Prius cars had safely traveled more than 1,000 miles of U.S. roads, Mr. Brynjolfsson realized he might be wrong.