If you let people loose in a landscape and tell them to choose a house site, half of them will go sit on the ridges where they'll die in the next fire, or where you can't get water to them. Or they'll sit in all the dam sites. Or they'll sit in all the places that will perish in the next big wind.

I think the world would function extremely well with millions of little cooperative groups, all in relation to each other.

You can hit a nail on the head, or cause a machine to do so, and get a fairly predictable result. Hit a dog on the head, and it will either dodge, bite back, or die, but it will never again react in the same way. We can predict only those things we set up to be predictable, not what we encounter in the real world of living and reactive processes.

Permaculture is the conscious design and maintenance of agriculturally productive ecosystems which have the diversity, stability, and resilience of natural ecosystems. It is the harmonious integration of landscape and people providing their food, energy, shelter and other material and non-material needs in a sustainable way. Without permanent agriculture there is no possibility of a stable social order.

Anarchy would suggest you're not cooperating. Permaculture is urging complete cooperation between each other and every other thing, animate and inanimate.

If you only do one thing, collect rainwater.

Permaculture creates a cultivated ecology, which is designed to produce more human and animal food than is generally found in nature.