Strategy guru Roger L. Martin and Skoll Foundation President and CEO Sally R. Osberg are co-authors of "Getting Beyond Better: How Social Entrepreneurship Works." In this interview, they describe how social entrepreneurs target systems that exist in a stable but unjust equilibrium and transform them into entirely new, superior, and sustainable equilibria. All of these leaders—call them disrupters, visionaries, or changemakers—develop, build, and scale their solutions in ways that bring about the truly revolutionary change that makes the world a fairer and better place.