Harvard's Clayton Christensen, 'The Innovator's Dilemma' author, is dead at 67

Before the term "thought leader" got applied to anyone with a book contract and a TEDx talk, Clayton Christensen was the real deal. Christensen, who died Thursday at age 67 after a long battle with cancer, fundamentally changed assumptions about the advantages to companies of incumbency and inspired corporate employees to indulge their entrepreneurial impulses outside the mother ship.