City needs the mind
City is like an idiot-age in the incubator. He is helpless without his many servants. He is able to think only very slowly and collectively, and in an emergency situation is not able to think at all. Can think of some people, but the city - an independent body, it requires managing the mind and nervous system. Destroy its water supply system, and he will die. Take away his guiding mind, and he commits suicide.
