Criminals when not actually plying their vocation generally go to large cities, for two reasons: first to spend their ill-gotten gains in pleasure, and secondly, that as a rule cities are the best hiding places. Apart from the ethnic enclave, virtually everything about American cities is socio-fugal and drives men apart, alienating them from each other. The implosion of the world population into cities everywhere is creating a series of destructive behavioral sinks more lethal than the hydrogen bomb. Man is faced with a chain reaction and practically no knowledge of the structure of the cultural atoms producing it. The first problem with London is to define it. London has never taken kindly to attempts at delimitation whether by people who wanted to govern it, or by those who just wanted to fix it statistically; every time this was done, London promptly outgrew its administration or its figures.