return the gold standard as world unravels, page-43

everything is valued in terms of the USD - including the AUD and all other currencies because the USD is the world's reserve currency - it is the 'default' mickey mouse gold standard. The POG in USD is just a comparison between two instruments of value storage.
If the world's fiat systems collapsed - gold would still act as a store of value - that's all money is after all. A convenience so that we don't need to trade blankets for food.

As to what it could be valued in - it's already valued in weight as it has been for millenia. Anything could be valued in gold - the POG as it realates to the USD, is really just the cost to buy or sell US debt.