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 Girl Gone Bad "Billboard" 200 !scope="row"| German Albums (Offizielle Top 100) !scope="row"|US "Billboard" 200 Good Girl Gone Bad Good Girl Gone Bad is the third studio album by singer Rihanna. It was released on May 31, 2007, by Def Jam Recordings and SRP Records. Rihanna worked with various producers on the album, including Christopher "Tricky" Stewart, Terius "Dream" Nash, Neo da Matrix, Timbaland, Carl Sturken, Evan Rogers and StarGate. Inspired by Brandy Norwood's fourth studio album "Afrodisiac" (2004), "Good Girl Gone Bad" is a pop, dance-pop and R&B album with 1980s music influences. Described as a turning point in Rihanna's career, it represents