Isn't it a good thing to free up labor for more creative work? I remember times when kids had to work on the field and could not attend school. Still happens in many countries. Communities can be formed or strengthened in other ways, without requiring people to work on a field. I am curious where you see the productivity limit in terms of sunlight, considering that only a very small fraction of the light energy actually ends up in the product. Is that really the limiting factor? Afaik yields per hectare have been going up more or less constantly.

Yield is not limitless in monoculture ag. Maximum yield is obtained with polyculture. Polyculture requires labor and it's not easily mechanized. I do not view the "freeing up of labor" as a good thing--this creates free time yes, but not freedom. Cities are perfect examples--they wouldn't exist without agrarian advancements--but they're also a great example of everything wrong with society, centralization, etc. I believe in building strong, intentional, self sovereign agrarian communities--integrated, cooperative Bitcoin citadels. The reversal of the degradation of rural communities. Rural communities have been destroyed because "there's no money in farming." The pendulum is turning back. People are demanding real food. Real food demands labor. Hard money for hard work.