He left for Columbia in 2006 but returned to NYU as Director of the Institute for Public Knowledge (IPK), which promotes collaborations among academics from diverse disciplinary backgrounds and between academics and working professionals.
Otisao je u Kolumbiju 2006. godine, ali se vratio na Univerzitet u Njujorku kao direktor Instituta za javno znanje, koji promovise saradnju među akademcima koji se bave razlicitim disciplinama, i izmedju akademskog i rada stručnjaka.