The map of utopias is cluttered nowadays with experiments by other names, and the very idea is expanding. It needs to open up a little more to contain disaster communities. These remarkable societies suggest that, just as many machines reset themselves to their original settings after a power outage, human beings reset themselves to something altruistic, communitarian, resourceful and imaginative after a disaster, that we revert to something we already know how to do. The possibility of paradise is already within us as a default setting.