We tend to romanticize entrepreneurs, inventors, and great business minds. We have this notion that they are a rare breed of people who are lucky enough to be hit by strokes of brilliance that the rest of us can’t even fathom. In these moments, they dream up the next great idea — the light bulb, the automobile, the iPhone, Twitter — and then they wake up and execute their visions and become legends. But the truth is that science doesn’t work that way, and neither does business. To succeed, we really need to trade in our blue sky brainstorming sessions for some old fashioned trial and error.