In other words, Foucault is up to something interesting, and probably we should meet him at least halfway to see, to measure, the degree of interest we may have in it.
Actually, and this sounds very counter-intuitive, you can probablymeasure national economic progress more by the jobs destroyed, than by the jobs created.
Since the price of expensive homes, particularly in once-fizzy markets such as California, is falling fastest, the Case-Shiller measureprobably paints the more accurate picture.