That doesen't change the circumstance that the money system would no longer work. I mean first would financial institutions fail. With them the accounts of billions of people and entities fail too. It would be literally dooms day. From 21st century to stone age in a heartbeat in histories meassurement. That's a very dark picture but the civil and military unrest that would follow are even more dark... You see now why BTC is not a fix to it? Even gold isn't.