The paper indicates that at times and levels of.social organisation our lethal violence rate increases well above the phylogenically predicted 2% — see Fig. 3c the contemporary band and tribe median estimates of 5±1% which are probably considerably more accurate than inferring from prehistoric remains). Other work suggests during resource scarcity hunter gatherer lethal violence shoots way up as well. I'm actually not sure what my point was, other than I suppose early humans under the conditions of contact with Neanderthals probably were on par with the most violent of phylogenetically similar animals.