>This is just not true for many currencies that have undergone hyper-inflation and hyper-deflation. This is true. But generally speaking, people go quite a bi

>This is just not true for many currencies that have undergone hyper-inflation and hyper-deflation. This is true. But generally speaking, people go quite a bit out of their way to use currencies that are perceived to have a predictable future value. This is why the dollar (and the Euro) is so popular the world over; it's value is pretty predictable, compared to most other commodities.