Let there be a nuclear explosion in downtown New York, and the city starts to wither away. Without a functioning Manhattan, jobs will evaporate, and the survivors will drift away. A similar terrorist bombing in Los Angeles would be more a temporary inconvenience than a fatal wound. Why? Well, what locals call LA is big. Overlay a map of LA on a map of Connecticut, and the two turn out to be about the same size. It is important to realize that LA’s economic activity is mostly in its suburbs. It is a redundantly connected constellation of much smaller cities. A fission bomb explosion will disrupt little of what actually goes on in LA.