A certain physical pattern is needed for the building of a world—water, a river bank, a stream, a spring, or even a faucet unguarded. And there is needed enough flat land to pitch the tents, a little brush or wood to build the fires. If there is a garbage dump not too far off, all the better; for there can be found equipment—stove tops, a curved fender to shelter the fire, and cans to cook in and to eat from. And the worlds were built in the evening. The people, moving in from the highways, made them with their tents and their hearts and their brains.

