What Makes a Thriving and Interesting City? Something Called Collision Density

Collision Density - How often are you going to run into someone with whom you can do something creative or interesting?

Who was right, Jane Jacobs or Alfred Marshall and Michael Porter? The renowned urbanist, Jacobs argued for decades of the importance of density and diversity of economic actors in cities as a primary driver of innovation. Economists Marshall and Porter, on the other hand, have argued that clustering of similar industries in industrial parks and regions is the best way to stimulate innovation, job growth, and economic development. Depending on the time, location, and industry, perhaps they are all right. Increasingly, however, it appears that more innovation and entrepreneurship is happening in the dynamic, diverse urban areas as opposed to suburban tech parks.

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