Risky food-finding strategy could be the key to human success: Creative free time may have come from big meals that could be shared -- ScienceDaily

It's a cold and rainy Sunday afternoon: would you rather be running after tasteless wild berries, or curled up on your couch with fuzzy socks and a good book?You might not have had that choice if our ancestors had not taken a big gamble with their food.on December 24 shows that early human foragers and farmers adopted an inefficient high-risk, high-reward strategy to find food.

To find out how humans obtained this extra energy, a group of researchers led by Thomas Kraft, a postdoctoral researcher at the University of California Santa Barbara, and Pontzer compared the energy budgets of wild gorillas, chimpanzees and orangutans with that of populations of Tanzanian hunter-gatherers and Bolivian forager-horticulturalists .Hunter-gatherers and forager-horticulturalists both gather food from wild plants and animals, but the Tsimane also produce small-scale crops.

Chimpanzees, gorillas and orangutans, on the other hand, are like an electric car bringing home a head of lettuce and some apples. They are essentially herbivores and frugivores who eat very little, if any, meat. Their strategy is one of low risk, low rewards: their food is easy to find, but it's fibrous, low in energy, and it takes a lot of time to get enough of it.

Being wired to finding and sharing energy bombs was, and still is, a winning strategy for hunter-gatherers and foragers-horticulturalists, Pontzer said. But it also can be treacherous for those of us with a pantry full of delicious highly caloric food.

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