cash, money, precious metals, and crypto coins are only worth what everyone else says they're worth. with inflation combined with cryptocurrency people have been waking up to the idea that the dollar is not set in stone, but our collective society still believe that is worth something.

the inherent value that fiat currency has over something like gold and silver is that it is very light and easy to transport, and can even be transported electronically. the simple feature means it's much more convenient to trade with than gold or silver, or even useful items like coal or food.