The upward movement of prices from fair value to excess usually is related to the presence of some combination of important elements: generally good news, complacency regarding events, uniformly upbeat treatment by the media, the unquestioning acceptance of optimistic accounts, a decline in skepticism, a dearth of risk aversion, a wide-open credit market, and a positive general mood. Conversely, the collapse of prices from fair value to bargain levels is usually marked by some or all of the following: generally bad news, rising alarm regarding events, highly negative media accounts, the
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