Some clues :
Douglas P. Fry : Pacified Past
Azar Gat : Warfare as an Ancient Feature
Robert L. Carneiro : Complexity and State Formation
Was the 20th century one of the most violent in human history ? (with two world wars and numerous other conflicts) ?
i also like the documentary series : “The Ascent of man” from the BBC in 1973 by Jacob Bronowski.
Dear Sir (Wolf) 🇰 🔵 🇱 🇦 🇳 🇦 🇰 ℹ️,
… looking at my avatar you might guess I’m a smiling radioactive citrus myself 😋.
The rapid changes you are discussing would be of the cultural kind but I might have made my question differently and ask more about possible genetic changes (or long term changes).
Thanks for your contribution to this discussion. I will be happy to read you in other posts and comments.