No, people came because the people who lived within the City were immortal. If, in fact, you could call them people. Neither Jann or Alek had actually seen one, though occasionally you could see their tiny, perfect spaceships departing and arriving from an opening in the very center of the City. "If the hole was on the edge somewhere," Fisher told them, "I would have gotten in ten years ago. At this point it'd be like an invasion, if we tried to get in. The entire City'd see us." Fisher was missing an arm and several teeth. These were not things that afflicted the Citydwellers.
Jann and Alek had traveled here two years ago. Alek had been nineteen. She was starting to get the idea that she was wasting her life here. It had been such a seductive idea, living forever. At first it was romantic. They lived in a tent and shot little desert hares for food, and Jann had gotten a job as a delivery boy with Fisher. Fisher had come from a place with, presumably, lots of fish. He said he missed fish a lot, but once he made it into the City, he was sure they would have lots of fish. Alek was less sure, but she'd come from a different city, one with plenty of fish and vegetables and other kinds of meat, and libraries and reasonably clean streets. It was time to go, she thought. There were other cities. Daytime all the time had always kind of freaked her out anyway.