This will be after the global collapse of currency systems and they all go into hyperinflation. I cannot believe what I have just read in this article from the chief economist of the BOE.

Bitcoin also gets a mention, im in absolute shock.

http://www.telegraph.co.uk/finance/bank-of-england/11874061/Negative-interest-rates-could-be-necessary-to-protect-UK-economy-says-Bank-of-England-chief-economist.html

In England the telegraph is generally recognised as being one of the more respected newspapers.