What most accurately explains why flat money has no value?

Fiat money has no intrinsic value because it is not backed by a physical commodity like gold or silver; instead, its value is derived from the trust and confidence that people and governments place in it. This trust is supported by the government's ability to maintain stability and enforce the currency's use for transactions. Essentially, fiat money functions as a social contract, where its value is based on collective agreement rather than tangible worth. When confidence erodes, so does the currency's value.