Money is a mind, the oldest artificial intelligence. Its prime directives are simple, its programming endlessly creative. Humans obey it unthinkingly, with cheerful alacrity. Like a virus, it doesn’t care if it kills its host. It will simply flow on to someone new, to control them as well. City Hall, the collective of artificial intelligences, is a framework of programs constructed around a single, never explicitly stated purpose: to keep Money safe.

