MEME: Fiat

Fiat money is a currency without intrinsic value that has been established as money, often by government regulation. Fiat money does not have use value, and has value only because a government maintains its value, or because parties engaging in exchange agree on its value. It was introduced as an alternative to commodity money and representative money. Commodity money is created from a good, often a precious metal such as gold or silver, which has uses other than as a medium of exchange (such a good is called a commodity). Representative money is similar to fiat money, but it represents a claim on a commodity (which can be redeemed to a greater or lesser extent).

The first use of fiat money was recorded in China around 1000 AD. Since then, it has been used by various countries, usually concurrently with commodity currencies. Fiat money started to dominate in the 20th century. Since the decoupling of the US dollar to gold by Richard Nixon in 1971, a system of national fiat currencies has been used globally, with freely floating exchange rates between the national currencies.