The clustering force: It’s the big reason behind the comeback of cities, and perhaps the most powerful driver of the knowledge economy. Alfred Marshall identified the economic power of clustering, or agglomeration, way back in the 1890s. Jane Jacobs later documented its role in catalyzing innovation and propelling the wealth of cities. The Nobel Prize-winning economist Robert Lucas described it as the underlying engine of today’s knowledge-based creative economy.
Image: Passersby walk near an art installation in Boston's Seaport, where many tech companies are located. Steven Senne/AP - https://www.citylab.com
