a compelling work of social theory that illuminates the promise of an emerging 21st century institutional form: the "rich community" built on diversity and differentiated identities joined by collaboration and mutual adjustment. Professor Heckscher documents its rise and the fumbles and controversies along the way, arguing that the shared sensibility of this kind of loosely-bounded, fluid, Internet-enabled community is necessary to solve major world problems such as climate change, global conflict, or racial tensions. The book harks back to Weber in its emphasis on patterns of meaning, yet is highly relevant to the big questions of our time