We continue to assess our future evolutionary prospects, this time picking up the story of the human journey where Homo sapiens emerges. Anatomically modern humans have existed for ~300 thousand years, but modern behavior is only evident starting ~100 thousand years ago. We examine this evolutionary process by describing humanity's unique capacities as an intensification of traits we share with other animals. We look at the ritual behavior of chimpanzees, the symbolic world of Neanderthals, and the increasingly elaborate sequences of abstraction that characterize human thought. We examine how for millennia human societies developed and lost traits repeatedly, in regional cycles of cultural growth and collapse, until 100 thousand years ago ... something happened.
Fight Like An Animal