经济学的教科书解释了货币的经济目的（账户单位，价值存储和一种交流手段}，通常忽略不提及美国货币在美国的主要作用：娱乐的来源。
(Textbooks in economics, which explain the economic purpose of money {a unit of account, a store of value, and a means of exchange}, usually neglect to mention the chief role of money in America: a source of entertainment.)