Cities are the engines of growth. Therefore, a policy that promotes urbanization of the population is an indispensible instrument for economic growth and development. In the following TED Talk, Paul Romer, a world-class growth economist at Stanford, makes the case.

I have many avenues for wasting time but most of them involve the internets. Here’s a trick for you: go to wikipedia and click on “Random Article” in the navigation panel. Here are the lessons.