Senior managers will have to rethink their roles dramatically if they are not to become latter-day Luddites. They will have to hand some of their functions to intelligent machines, which will always be better at data analysis than humans, and some to the heads of business units, who will be in a better position to make use of the crunched data. Executives will increasingly focus on the two things that humans can still do better than machines—motivating the troops and producing game-changing thoughts. Mr McAfee says, “I’ve never seen a piece of technology that could negotiate effectively. Or motivate and lead a team.” Tom Peters, a veteran American management guru, reckons the best leaders of the future will spend half their time reading books.