David T. Hsu is Head of Business Innovation at the Hollywood-based social impact agency Propper Daley and author of “Untethered: A Primer on Social Isolation.” Trained as a political scientist, he leverages expertise in culture change and systems change to advise leaders across philanthropy, business, and entertainment. David previously worked in strategy and communications at NationBuilder, the software company that powers grassroots campaigns. Prior to that, he was visiting lecturer in international political economy at the University of Pennsylvania and supported antitrust investigations at the U.S. Department of Justice. David is an advisor for’s Generation to Generation campaign and created the citywide “anti-gala” Shared Plates for L.A. Kitchen. He holds a B.A. from Duke and Ph.D. from Princeton.