Klein credits recent books by authors Ed Glaeser, Ryan Avent, and Matt Yglesias for focusing on the importance of cities in America's economy, with common threads running through their related subject matter.
The three principal findings that Klein finds in these studies that deserve attention are that:
In developing solutions to the problems holding back the potential of American cities, Klein sees elements for both conservatives and liberals to like. "The means should thrill the right, as the agenda effectively boils down to deregulation. The ends should engage the left, as the people who are priced out of the cities - and thus of the benefits they bring - are the poor and the middle class, not the wealthy."