Medium of exchange was observed as early as Oresme, Copernicus and then in 1558 by Sir Thomas Gresham, that bad money drives out good in any marketplace (Gresham's Law states "Where legal tender laws exist, bad money drives out good money"). A more precise definition is this: "A currency that is artificially overvalued by law will drive out of circulation a currency that is artificially undervalued by that law." Gresham's law is therefore a specific application of the general law of price controls. A common explanation is that people will always keep the less adultered, less clipped, sweated, less filed, less trimmed coin,
Economic law Economic law In the legal system of the Soviet Union, economic law was the legal theory and system under which economic relations were a legal discipline independent of criminal law and civil law. In the Law of the United States and some other legal systems this approximately corresponds to the commercial law (business law). In the Soviet legal system, the purpose of the economic law is to regulate the relations arising from the economic activities. The theory of the independence of the economic law was pursued after the 21st Congress of the CPSU of 1959, with the principal proponent being