@farmerman,
I don't pretend, fman, to understand what you are talking about with regards to fresh water or the lack of it. You make it sound so simple.
When I was a lad of 23 or so I hitch hiked for a few years. Including Africa. Ethiopia, where it might take 20 acres to raise one scrawny cow. Are you saying that we have the technology to bring water to that perpetually drought stricken area?
Are you saying that we in the US can build sprawling cities in the desert region of the SW and there will be a way to provide them with all the water they will ever want?
I don't mean to be a prick, fman, but I just don't understand where you are coming from. Fresh water to me is a finite resource.
Clearly, you think otherwise.
Perhaps its a matter of you being the scientist looking at what is technically possible while I, the economist, see it from a different perspective.