You see some numbers saying as much as $1.4 trillion, just in stock market devaluation. Carl Bialik, the sharp Numbers Guy at the Wall Street Journal, lays out the math, and notes that such huge figures are based on "event analysis"—interpreting all of the stock market's activity over a finite period to one main event. Whole thing, worth bookmarking, is here. My non-bookmark-worthy take on event analysis, and the so-called "nonsense index," is archived here.
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