Jeff Leitner is a social innovator and theorist. He is founder and lead researcher at Unwritten Labs, a fellow at New America, and former innovator in residence at the University of Southern California. His work history includes founding and managing the first philanthropic think tank, which enlisted more than 700 big thinkers - in science, business, the arts, and philanthropy - to help 45-plus governments, institutions, and corporations. Together, we helped to create change for the U.S. Department of State, NASA, the Community of Democracies, Harvard Medical School, TED, Ashoka, Alfred P. Sloan Foundation, Starbucks, and Coca-Cola.

Jeff is currently exploring the curiously undervalued social phenomenon of unwritten rules — particularly their role in social cohesion in organizations and society at-large. My interest in unwritten rules emerged from decades of work with the social sector, on challenges ranging from healthcare to public education, and urban renewal to international diplomacy.