When I was an urban planning student at the University of California, Los Angeles, more than 30 years ago, my area of concentration was known as the “built environment” -- the bricks and mortar, the form and design of the buildings, the streets, the sidewalks, the parks and everything else that makes up the way humans have manipulated the environment to create built spaces. The course of study led me to think that cities are pretty static: Buildings, roads and other structures are expensive and time-consuming to build, and they don’t change much over time.
If you want to understand how completely wrongheaded that way of thinking is, just check out Corridorscope. It’s a website created by the Alliance for Downtown New York and the Center for Urban Science and Progress at New York University, and it displays all kinds of data that shows just how dynamic a city is. Specifically it shows how Wi-Fi connections, 311 service requests, bike-share docking and trash compactors grow and shrink during the day as humans come and go. It’s a startling depiction of how one street in one neighborhood in one city changes over the course of the day.