But humans aren't living in the "untamed wilds". We figured out that it's possible to cooperate, even in large numbers, in many-thousands-of-years-BC. Since the

But humans aren't living in the "untamed wilds". We figured out that it's possible to cooperate, even in large numbers, in many-thousands-of-years-BC. Since then we're been scaling up the level of cooperation. The last century provides many examples of successful cooperation between even states -- e.g. various nuclear test ban treaties. Why pretend that now of all times it's somehow impossible for us to cooperate?