Record-low interest rates in 2001, 2002 and 2003 did not lead Americans to invest more – there was already excess capacity. Instead, easy money stimulated the economy by inducing households to refinance their mortgages, and to spend some of their capital.
微观的分析则更具戏剧性。2001、2002、2003年创纪录的低利率并未引发美国人更大的投资热情—超额产能（excess capacity）已经出现。相反，赚快钱的心态诱使美国家庭将他们的按揭重新融资并支出部分资本从而刺激美国经济。