Larger Populations Triggered Stone Age Learning : NPR

Larger Populations Triggered Stone Age Learning : NPR: "Anthropologists have come up with a theory about what kicked off a series of 'creative explosions' in human ingenuity during the Stone Age — from about 90,000 to 45,000 years ago — and it doesn't involve some sudden improvement in brain power.

Instead, the flowering of intelligence that brought sophisticated tools, better weapons and art came about because of population density: More people started living in bigger communities."
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Smarts come from large numbers of people living together? Could have fooled me. But I guess my community is to small to sustain intelligent life.