Quote from Illum:
Does anyone take copper as payment?
Not since '82. But as long as people accept fiat currency, is that relevant? You keep your money fully invested in copper or some other commodity X, and when you want to buy something you cash out into dollars or euros or whatever.
Back in the days before the internet, bullion coins (in only 2 or three designated 'precious' metals) made sense. Now, they only make sense if you expect internet commerce, along with the rest of western civilization, to disappear.
Assuming that actually happens, I think the value of gold must eventually drop very sharply in favor of useful stuff: steel, aluminum, copper, explosives, food, etc.
Assuming it doesn't happen, then all commodities are equally effective inflation hedges... and the gold bubble (as compared to other commodities, not necessarily as compared to fiat currencies) must burst.
Electronic liquidity means gold isn't special any more. The question is, how long will it take the markets to figure this out...
EDIT: Regarding the 'history of gold' stuff.... isn't that just a horribly misleading, extremely lagging indicator?
"X was valuable in the past, therefore it will be valuable again" is the first stage of every investor's worst nightmare since the beginning of time. (Or the beginning of modern capitalism, whichever came first.) I see no reason to think that gold's special place was the result of anything but centuries of severe illiquidity, only properly alleviated in the past two decades.