For 170 years, U.S. Cities have followed a hidden law of growth and decline

Despite massive technological and industrial changes, American cities have stayed remarkably coherent in how their economies fit together. This hidden order governs how cities diversify, grow, and reinvent themselves without losing their economic identity.

​Despite massive technological and industrial changes, American cities have stayed remarkably coherent in how their economies fit together. This hidden order governs how cities diversify, grow, and reinvent themselves without losing their economic identity. Despite massive technological and industrial changes, American cities have stayed remarkably coherent in how their economies fit together. This hidden order governs how cities diversify, grow, and reinvent themselves without losing their economic identity.