> I don't believe there is an innate zero-sum bias. Why would humans be hunting in groups 200,000 years ago if we evolved to be zero-sum thinkers? It would be

> I don't believe there is an innate zero-sum bias. Why would humans be hunting in groups 200,000 years ago if we evolved to be zero-sum thinkers? It would be just one of many heuristics and biases. Others, like the ones that make us help people who carry our genes (family, but originally, almost everybody in a tribe), are probably the foundation of cooperation and altruism of the kind you write about.