The fields of innovation and entrepreneurship are undergoing a revolution of sorts. We are slowly and inexorably recognizing that our obsession with ideas—how to have them or how to buy them—fails to explain how breakthroughs actually happen. It's no longer easy to believe that a single idea drove Apple's iPod (which in a decade has become its biggest business) or Edison's lightbulb when we consider the dozens of other companies who were already selling those same ideas in the market when their proverbial and literal light bulbs went off. As with any scientific revolution (and conveniently self-referential), it's not a single idea that drives the revolution but rather a subtle accumulation of similarly new ideas from different sources. In this case, the revolutions is about the role of entrepreneurship, of action and experimentation, in making breakthroughs happen.