See:
There Is No Escaping History. Fiat Currency Eventually Fails.
Notice that this is a critique of fiat money -- not a critique of state-issued money under a gold/silver or other standard. Fiat money is a rare occurrence in modern history. (We live in strange times!) As we can see, the examples found by the author are a small number of short periods here and there.
I have my own critique of gold/silver standards, but that's another issue.
AS of this time since the hi-technology will strongly operated start year 2000 until now the status of fiat currency is almost backup or for short term uses because the main uses now is in digital system process like deposit in big amount through digital process how much more if bitcoin is going to top of currency much more quickly and convenient for any body.