A fresh, road-tested guide to growing a flicker of an idea into a full-blown movement, often using unexpected and even counterintuitive principles. It?s an age-old question: Why do some great ideas or inventions take off and soar while others never get off the ground? Today, with more and more young entrepreneurs seeking to incorporate social justice, economic equity, climate concerns, and communal health into their endeavors, the need for practical-yet-think-big answers is great.