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A Fair Share of the Pie

People everywhere put a social spin on economic exchanges

Hadza hunter-gatherers in Tanzania chow down on gazelle meat, fruit, honey, and other mealtime staples without spending a dime. The Au and Gnau foragers of Papua New Guinea generously give food and other gifts to their neighbors without bothering to take out bank loans. Kazakh herders in western Mongolia monitor the weather and their animals' health but ignore the ups and downs of international stock markets.

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