I use ideas from political economy to develop social technology for widely-shared prosperity and diverse cooperation. These ideas have inspired a social movement, RadicalxChange, that convenes activists, artists, entrepreneurs and researchers using information technology and market mechanisms to create a richer and more equal society. I help catalyze this collaboration as Founder and Chair of the RadicalxChange Foundation. Through that work I became co-chair and technical lead of the Harvard Edmond J. Safra Center on Ethics Rapid Response Task Force on Covid-19, the recommendations from which were endorsed by a dozen leading civil society organizations and the Biden campaign, among others. I am currently visiting and teaching at the Safra Center jointly with its chair and his co-chair on the Task Force, Danielle Allen, and Marc Stears.