What happens to the value of bitcoin if the dollar goes to 0? Will bitcoin also loose value because the dollar is worthless? yes, there would probably be other things to mind like world war, full panic, no internett and so on. But set these things aside. How much would a sack of potatoes cost, and with what could I buy these potatous witth(gold/bitcoin/chickens/etc.)?
Bitcoin is not only traded for dollars, but also in other fiat currencies. Therefore, even if the dollar becomes worthless, bitcoin still has value as it can be exchanged for other currencies that are not worthless. Therefore, this would not be a problem for Bitcoin per se. Maybe they would start trading it only for gold or other precious metals instead of fiat money. But who can really say what will happen if the dollar becomes worthless. Either way, 1 BTC remains = 1 BTC and as long as you can buy things with it, everything is fine.
Any ideas? and any ideas on how bitcoin could be independant of the dollar, or other fiat?
Of course it will be difficult to achieve something like that. Up to now it has been the easiest to calculate its value in fiat currency and I think it will stay that way for a long time to come. But maybe one day it will only be traded for gold or other precious metals or commodities. Maybe also against water, should that be scarce and worthwhile. But even gold, etc., gets its value from being exchanged for fiat money. So basically it would be no different than now. Therefore, it will surely always remain difficult to give bitcoin the right value it deserves without using fiat money.