" In The Better Angels of Our Nature, Pinker calculates the average homicide rate among eight primitive societies, arriving at an alarming 14 per cent. This figure appeared in respected journals like Science and was endlessly regurgitated by newspapers and on TV. When other scientists took a look at his source material, however, they discovered that Pinker mixed up some things. This may get a little technical, but we need to understand where he went wrong. The question we want to answer is: which peoples still hunting and gathering today are representative of how humans lived 50,000 years ago? After all, we were nomads for 95 per cent of human history, roving the world in small, relatively egalitarian groups. Pinker chose to focus almost exclusively on hybrid cultures. These are people who hunt and gather, but who also ride horses or live together in settlements or engage in farming on the side. Now these activities are all relatively recent. Humans didn’t start farming until 10,000 years ago and horses weren’t domesticated until 5,000 years ago. If you want to figure out how our distant ancestors lived 50,000 years ago, it doesn’t make sense to extrapolate from people who keep horses and tend vegetable plots. But even if we get on board with Pinker’s methods, the data is problematic. According to the psychologist, 30 per cent of deaths among the Aché in Paraguay (tribe 1 on his list) and 21 per cent of deaths among the Hiwi in Venezuela and Colombia (tribe 3) are attributable to warfare. These people are out for blood, it would seem. The anthropologist Douglas Fry was sceptical, however. Reviewing the original sources, he discovered that all forty-six cases of what Pinker categorised as Aché ‘war mortality’ actually concerned a tribe member listed as ‘shot by Paraguayan’. The Aché were in fact not killing each other, but being ‘relentlessly pursued by slave traders and attacked by Paraguayan frontiersmen’, reads the original source, whereas they themselves ‘desire a peaceful relationship with their more powerful neighbors’. It was the same with the Hiwi. All the men, women and children enumerated by Pinker as war deaths were murdered in 1968 by local cattle ranchers.40 There go the iron-clad homicide rates. Far from habitually slaughtering one another, these nomadic foragers were the victims of ‘civilised’ farmers wielding advanced weaponry. ‘Bar charts and numeric tables depicting percentages […] convey an air of scientific objectivity,’ Fry writes. ‘But in this case it is all an illusion. "
― Rutger Bregman , Humankind: A Hopeful History