Fiat money is crazy if you think about it. It means that there is no intrinsic value to the money itself, or it is negligible. Back in the day, when people used to have silver and gold money, now that seems to make more sense, because those metals have intrinsic value.

You can actually use them for something. But still, they are also a bit fiaty, because I mean, you are probably not gonna go and melt the gold you got for your sheep or whatever and use it for a filling in your tooth. I guess the only real non-fiat situation is where you barter. In other words, I give you three sheep for one month’s accommodation, or I give you 10 loaves of bread in exchange for 1 kg of coffee beans. Some people still do this to avoid tax I think.