Not even central banks can provide the guarantee you’re looking for - they can only print money to devalue their currency, but they can’t make it appreciate [1]

Not even central banks can provide the guarantee you’re looking for - they can only print money to devalue their currency, but they can’t make it appreciate [1]! [1] https://en.m.wikipedia.org/wiki/Black_Wednesday https://en.m.wikipedia.org/wiki/Black_Wednesday