lwzxy 发表于 2009-11-10 20:55 
也说Gresham's Law.
Popularly stated: "Bad money drives out good money." More correctly stated: When a government recognizes more than one kind of money as legal tender, there is a tendency for the legally overvalued money to become the universally used medium of exchange, while the legally undervalued money disappears as a medium of exchange.
Actually, Gresham's Law is only a special case of the more general economic law that in a market economy no commodity is ever allocated to perform a function for which it is known that a cheaper commodity would serve as well.
这倒是奥地利学派的观点,哈耶克在《货币的非国家化》,罗斯巴德在《权力与市场》中都提到过。