Larson asked Sassen what distinguishes a global city:
"Sassen: A global city makes new norms. And two requirements for that happening are complexity and diversity. Quite often, in countries around the world, it's the most global city, especially New York, where new national and international norms are made.
FP: Is a global city always a megacity, and vice versa?
SS: I'm so glad you asked. Most global cities are really not megacities. Some are, but the question of size is a tricky one."