In fairness, some permaculture people talk about this, for example, food forests which can produce an impressive amount of food which a city dweller would not r

In fairness, some permaculture people talk about this, for example, food forests which can produce an impressive amount of food which a city dweller would not recognise or know how to cook even if they did. If you have a large enough food forest then you could be providing some kind of subsistence living long after someone came for your cows, sheep and pigs.