[toomuchtodo]

Cities are the centers of knowledge work and financialization, not heavy industries and agriculture people need to survive. Humanity could live without cities, we did before, but it couldn’t live without what makes cities possible from afar.

[analog31]

Try tilling 40 acres with a horse. Imagine getting sick, or giving birth.

We lived without cities, but with a vastly lower population and quality of life. Things like knowledge work and financialization are what made possible great ventures such as energy distribution, transportation, mechanized farming, medicines, and so forth. I'm not sure agriculture would even sustain the existing rural population without the infrastructure of a complex modern economy.

We're all in this together.

[TulliusCicero]

Somehow I doubt that GP was arguing that literally 0% of the population would be outside of cities.