Globalization favors open networks, people who can do business with each other on a minimal amount of trust, and avoids closed networks, the parochial neighborhoods that only look out for their own.
Talent retention is not a key driver of economic vitality. If it were, Chicago and New York City would be in a world of trouble. But that doesn't stop many from resorting to the tired brain drain refrain.
Top-tier research universities matter more than a vibrant urban core as focus shifts from talent attraction (too much competition) to talent production.
Chicago, where many academics and icons have moved to try out new ideas, makes the case that migrants are more important than density to the greatness of a city.
The University of Chicago's Urban Education Institute runs charter schools and uses innovative practices to provide inner-city children a pathway to college.