How did we human beings become the hypersocial creatures we are today?
The biologist E. O. Wilson credits fire, among other causes. In a recent history of human evolution, Wilson offers the following explanation: Fire was precious because it flushed animals out of the brush, then made it possible for people to cook them. Campfires had to be guarded, which made them like “nests” and made us feel safe enough to be “eusocial” or altruistic. Sounds plausible to me.
