The premise that weeds are a suitable food for humans is wrong. Most of these plants are loaded with toxins. You can't eat them in any quantity for calories wit

The premise that weeds are a suitable food for humans is wrong. Most of these plants are loaded with toxins. You can't eat them in any quantity for calories without getting poisoned. Cows and goats and sheep can eat these things, though, because they have more advanced digestive systems. The udder provides an added toxin filtration system. In theory you might be able to design an efficient system to detoxify wild plants such as grass and weeds directly into a high quality human food. At this moment cheese is already an incredibly effective way to use wild forage to make human food.