How does true social change occur? In this brilliant book filled with insightful analysis and colourful storytelling, Gal Beckerman shows that new ideas need to incubate through thoughtful discussions in order to create sustained movements. Today's social media hothouses, unfortunately, tend to produce flash mobs that flame out. We need to regain intimate forms of communication if we want to nurture real transformation. Rarely does a book give you a new way of looking at social change. This one does.