Controlling the money supply proved far harder in practice than in theory (notably in Britain in the 1980s: Mr Friedman grumbled that the British authorities were going about it in the wrong way).

控制货币供应在实施上证明远比理论要难得多(例如在80年代的英国实施的情况：弗里德曼抱怨说是因为英国当局具体操作上有问题)。