Inthefinancialsector，crashesprobablyrepresentthemoststrikingeventsamongallpossibleextremephenomena，withanimpactandfrequencythathasbeenincreasinginthelasttwodecades.ConsidertheworldwidecrashinOctober1987whichevaporatedmorethanonethousandbilliondol-larsinafewdaysorthemorerecentcollapseoftheinternetbubbleinwhichmorethanone-thirdoftheworldcapitalizationof1999disappearedafterMarch2000.Financeandstockmarketsarebasedonthefluidconvertibilityofstocksintomoneyandviceversa.Thus，toworkwell，moneyisrequestedtobeareliablestandardofvalue，thatis，aneffective8toreofvalue，hencetheconcernswiththenegativeimpactsofinflation.