Back in 2005, Steve Jobs asked Wendell Weeks, the CEO of Corning Inc., to make a special version of its Gorilla Glass just for small Apple screens—and to do it in just six months’ time. Weeks didn’t think it could be done, certainly not within the six-month time frame. But Jobs convinced him Corning could do it anyway—and they did. Sure, Jobs was a master motivator, but more important, he knew that even a company as brilliant as Apple couldn’t make the right kind of glass for its own devices. Apple had to look outside itself for help—the company knew “when to do who and how.”