When the dollar hits absolute zero, will the phrase "sell bitcoin" have any meaning? If so, how? Will bitcoin be priced in gold at that point?
Does the phrase "sell dollars" have any meaning? At some point we will stop pricing bitcoin in dollars and switch to pricing everything in bitcoins. Instead of saying "sell bitcoins", you will just say you "trade bitcoins for something", or "buy something" and assume everybody knows you mean in exchange for bitcoins. Do you go to the store and sell dollars? No, you go to the store and buy something. In the future, you will go to the store and buy something by giving them some bitcoins. Or, what seems more likely to me, you will go to the store and swipe a card which debits the amount of bitcoins in the account at your bank.
I started a similar thread while ago:
https://bitcointalk.org/index.php?topic=155472.0
