This one may actually have merit. In Cordain's paper "Cereal Grains: Humanity's Double-Edged Sword" he concludes:"Look how much the population has grown since we started farming, we wouldn't have technology or anything if we still hunted and gathered"
edit to add link to paper: http://www.thepaleodiet.com/articles...%20article.pdfCereal grains are truly humanity’s double-edged sword. For without them,
our species would likely have never evolved the complex cultural and technological
innovations which allowed our departure from the hunter-gatherer
niche. However, because of the dissonance between human evolutionary nutritional
requirements and the nutrient content of these domesticated grasses,
many of the world’s people suffer disease and dysfunction directly attributable
to the consumption of these foods.