Another way to look at it is how the Russians lived in small nuclear villages, before Genghis Khan's hordes of horse cavalry swept across the steppes, bringing dem dare cut and slash genetics to the West. The agriculturalist groups of 72-98 individuals had no way to cope with such an onslaught of linear reasoning, thus fell to the conquerors' seed. I mean, they also found these Mongols pretty sexy don't you know.
In centuries following both Oriontal and Accidental shamans and sha-womans used eurethro and psyllicibic imbibations in order to challenge the norms of perception. It was these seers and seekers, leaving behind their visions on cave walls (depicting not only biological wonders, but also the rounded rocks of Mars, and the winged chariots of the gods; Plato mentioned them obliquely and obligingly in his book, Glockenspiel Over Athens) that rocked their world, and worlds to come.
I could go on, and so I shall, regarding the normatives of normalcy, for I have miles to go before I sleep, and pages to fill. And bellies to fill with the good clean porridge of my youth, when back on the farm there weren't enuf shoes to go around, but there were plenty of oats., which by the way contain some 12% protein, as opposed to 8 or 9 for wheat, barley and rye, and only 7% for ordinary field corn. Hence the smartest kids in our neighborhood, and typically throughout the middle-era farming Age, lived in the hilltop areas, where soils were, ironically thinner, and could not grow corn, while the stupid flatlanders and their rich bottomland, grew dense between the ears from eating too many ears of the pig feed, and then went on to become politicians.
Is this a dense enough post? No, it deserves a fourth paragraph, the mightiest of all. I will go on, perhaps about the relative fighting strength of the Allied vs Axis troops in World War II, relative to diet, in every theater. By the way, good theater is important, too, as Bob Hope would surely tell you. One thing is certain, an army definitely fights on its stomach. And there is much to be said aboot the state of the art soup kitchens that followed the Roman Legions into battle. Fossilized lava indicates a steady flow of stamina-producing grain-based foods, and the journals of Euripides Pants concur, whereas the Huns' diet of poor horse meat just made them ornery as a henpecking wife, which was unfortunate for the Roman Empire, as any Ozark Mountain Man will tell you. Madness trumps patience every time.
Good Citizen Carl