Shameles Plug: My sister is a great artist, I'm sure she'd like her work to become someone's fiat currency. http://www.briannaleefineart.com
Shameles Plug: My sister is a great artist, I'm sure she'd like her work to become someone's fiat currency. http://www.briannaleefineart.com
Technically Fiat is a thing declared and enforced by the state. Art is not that, so agreed the title is an abuse of language and actually non-sense.
However what money is (the abstract concept) and what a currency is (the actual thing you use) is subjective. Art could be used as money and a currency, just as well as sea shells or cigarettes can.
The key is it being used as a medium of exchange, not as something you get for its own gain. So trading art, for the sole purpose to trade it for something else, is using it as a currency.
I think realistically modern art is more of an investment vehicle than a currency.
I'll add that art is probably used for tax avoidance and money laundering as well.