Arun is Professor and NEC Faculty Fellow at NYU's Stern School of Business and heads the Social Cities Initiative at NYU's Center for Urban Science+Progress. He is fascinated by how digital technologies transform business and society. His (sometimes passionate) writing about the collaborative economy has been published in the New York Times, Harvard Business Review and WIRED. Follow him on Twitter @digitalarun, find out more at http://oz.stern.nyu.edu