 As anthropologist Peter Farb has documented, some Native American societies, for example, the Shoshone, didn't even have a word for war in their vocabulary. Others used organized games to resolve conflicts. Many theories have been put forward for how and why the warrior mentality took over. And then, you know, it goes on to whether this started with animal husbandry or whether it started with agriculture or where did war begin and interesting stuff. So it's in the Tom Harmon Reader.