Agree except for the pigs… I use pigs to till soil, after they are big and harvested the land (from raw) Is all churned up without weeds. Also, they can eat mostly farm scrap that would otherwise become compost, and the fat source is invaluable. In a food scarcity scenario, fats are a major component that is hard to get. Also, delicious. Just smoked 30lbs of bacon, smoking hams and hocks soon. Used carefully itihink pigs are critical.thta diagram is fro vegetarian only. Doesn’t take into account animals, which you need for fat and protein.