The Genius of Dogs

"Brian Hare’s research on dogs, wolves, and great apes has been a game changer. No one is better placed to authoritatively translate the meaning of this research for a better understanding of the minds of dogs and our own species.”
— Richard Wrangham, author of Catching Fire and Demonic Males

The Friendliest Human

Until ~25,000 years ago we shared the planet with other human species.  These humans were large brained, cultural and perhaps even linguistic.  I will argue that our species survived because we experienced natural selection for friendliness toward intragroup strangers.