If the benchmarks used to determine the value of securities were to suddenly reverse course, the "new normal" could soon be history.
By Shawn Tully, senior editor-at-large
FORTUNE -- Seldom have so many of the metrics that influence stock prices strayed so far from the long-term trends we've come to consider "normal." Corporate earnings are far above what's normal historically, interest rates are way below normal because of Fed intervention, and MORE