It's unclear how reliable statistics like these are, and the picture of how violent and/or war-like pre-agricultural humans were is very far from clear: https:

It's unclear how reliable statistics like these are, and the picture of how violent and/or war-like pre-agricultural humans were is very far from clear: https://www.theatlantic.com/magazine/archive/2019/03/how-humans-tamed-themselves/580447/ https://www.theatlantic.com/magazine/archive/2019/03/how-hum... https://www.scientificamerican.com/article/war-is-not-part-of-human-nature/ https://www.scientificamerican.com/article/war-is-not-part-o... https://www.wired.com/2013/07/to-war-is-human-perhaps-not/ https://www.wired.com/2013/07/to-war-is-human-perhaps-not/