It can be no accident that the first archaeological evidence for war suddenly appears approximately ten thousand years ago, coinciding with the development of private property and farming. Could it be that at this juncture we chose a way of life for which our bodies and minds were not equipped? Evolutionary psychologists refer to this as a mismatch, meaning a lack of physical or mental preparation for modern times. The most familiar illustration is obesity: where as hunter-gatherers we were still slim and fit, these days more people worldwide are overweight than go hungry. We regularly feast on sugars and fats and salts, taking in far more calories than our bodies need.

— Humankind by Rutger Bregman (Page 198)