This is a great segment on Smart City Radio with Carol Coletta talks with Ed Glaeser about what makes cities work. I think Glaeser gets that stable and shrinking cities can't rely on methods of the past to be vibrant in the future:
Ed Glaeser is our first guest, and he is always asking the question, "What makes cities work?" He is a prolific researcher at Harvard University's Department of Economics, and he has challenged the wisdom of the ambitions of shrinking cities to get bigger.
Listen to the show here and another segment here.