ie water's role as an energy vector "Any economic unit can emit money. The serious problem is to get it accepted" Hyman Minsky
ie water's role as an energy vector
is that relationship also at least indirectly related to the relationship between water usage and GDP growth:
Will The Next War Be Fought Over Water? | NPR
"Our water use between 1900 and 1975 actually tripled relative to population growth," he says. "Since 1975 to the present day, it has flat-lined. And we still had a population increase of about 30 percent and our GDP continued to grow. So it's an amazing increase in water productivity."