"Well, their food came from the forest and gardens, water from the cataract. Scavenge trips to landfills yielded plastics and metals for tools. Their "school" sony was powered by a water turbine. Solar nitelamps recharged during daylite hours. Their entertainment was themselves; consumers cannot xist without 3-D and AdV, but humans once did and still can. Enforcement? Problems arose, no doubt, even crises from time to time. But no crisis is unsuperable if people cooperate." - Sonmi-451 in Cloud Atlas by David Mitchell