This is a 5,000 year plan. It would be ridiculous to try to estimate what fraction of the globe could afford geoengineering in 2,000 years (if I'm taking a ran

This is a 5,000 year plan. It would be ridiculous to try to estimate what fraction of the globe could afford geoengineering in 2,000 years (if I'm taking a random guess, I'm saying either all of it or none of it).