That is interesting!
Funny, though, all the references to tubers "holding people back" by preventing things like "inequality [a hallmark of complex society]." Almost reads like an Onion article.
"The fact that grains posed a security risk may have been a blessing in disguise…" because it led to "the creation of warrior classes and the development of complex hierarchies and taxation schemes." Yaaaay, war and inequality and taxes! You really dodged a bullet, grain eaters—it could've been potatoes and equality for you.