I am not sure, but certainly with expanding populations there will always come a need to have more currency afloat.. Currency is a person credit for the value of work they do...
There will be more credit for the work that is done by a population of 2 billion vs a population of 1 billion.
Gold is limited and therefore useless as a measure of credit for work done because with an expanding population time could only permit people to receive less credit for the same amount of work..
I boggles me to imagine the disappointment on these doom and gloomers faces when the whole thing collapses and the dust settles.. at some point someone will say to them and they will realize how foolish they were...
"Seriously. what did you expect? To just walk into a store, take out your scale, chisel off half a gram off an ounce, weigh it, hand it to the clerk with the microscope, and receive your goods after he verifies the authenticity of the gold?"