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,
Good Girls Go Bad Good Girls Go Bad "Good Girls Go Bad" is a song by American pop band Cobra Starship with guest vocals by Leighton Meester. It was the first single released from their third studio album, "Hot Mess". The song was released digitally through iTunes on May 11, 2009. On May 8, 2009, "Good Girls Go Bad" made its radio debut on KIIS-FM with Ryan Seacrest's show. The song was produced by former "American Idol" judge Kara DioGuardi and Kevin Rudolf. The song went on to become Cobra Starship and Leighton Meester's first US hit and top 10, peaking at number seven