> That being said air is free because it's a mirage, the sun powers plants and animals to continuously recycle it but once that source runs out then we hit a li

> That being said air is free because it's a mirage, the sun powers plants and animals to continuously recycle it but once that source runs out then we hit a limit. > And people pay for water because there is a limit on it. Both exist in massive quantity in the asteroid belt. Europa has larger oceans than Earth. Your personal financial limitations aside, I was talking about what the human race can accomplish as a whole when we set our minds to it. > All humanity has been doing is optimization. Best utilizing what we already have to delay the impending termination of when humans hit the final limit. Final limit? Never heard of it. Is that a band name? The https://en.wikipedia.org/wiki/Kardashev_scale https://en.wikipedia.org/wiki/Kardashev_scale considers a type III civilization capturing and using all of the energy emitted by an entire galaxy. And folks have proposed larger more capable civilizations yet.