But over longer periods of time farming societies were far more likely to suffer severe, existentially threatening famines than foragers.6 Foraging may be much less productive and generate far lower energy yields than farming but it is also much less risky. This is firstly because foragers tended to live well within the natural limits imposed by their environments rather than skate perpetually on its dangerous verges, and secondly because where subsistence farmers typically relied on one or two staple crops, foragers in even the bleakest environments relied on dozens of different food sources
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