"Diamond writes: "We have to wonder why the kings and nobles failed to recognize and solve these seemingly obvious problems undermining their society. Their attention was evidently focused on their short-term concerns of enriching themselves, waging wars, erecting monuments, competing with each other, and extracting enough food from the peasants to support all those activities." (If this sounds familiar, I would note that archaeology is thick with cautionary tales that speak directly to the twenty-first century.)"