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TheDifferencebetweenaBrainanda.docx

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TheDifferencebetweenaBrainandaTheDifferencebetweenaBrainandaComputer(人脑与电脑的区别)   TheDifferencebetweenaBrainandaComputer      ~hedifferencebetweenabrainandacomputercanbeexpressedinasingleword:complexity.    Eventhemostcomplicatedcomputermanhasyetbuiltcan'tcompareinintricacywiththebrain.Computerswitchesandcomportentsnumberinthethousandsratherthaninthebillions.What'smore,thecomputerswitchisjustanon-offdevice,whereasthebraincellisitselfpossessedofatremendouslycomplexinnerstructure.    Canacomputerthink?Thatdependsonwhatyoumeanby"think".Ifsolvingamathematicalproblemis"thinking',thenacomputercan"think'anddosomuchfasterthanaman.Ofcourse,mostmathematicalproblemscanbesolvedquitemechanicallybyrepeatingcertainstraightforwardprocessesoverandoveragain.Eventhesimplecomputersoftodaycanbegearedforthat.    Surely,though,ifacomputercanbemadecomplexenough,itcanbeascreativeasweare.Ifitcouldbemadeascomplexasahumanbrain,itcouldbetheequivalentofahumanbrainanddowhateverahumanbraincando.    Buthowlongwillittaketobuildacomputercomplexenoughtoduplicatethehumanbrain?Perhapsnotaslongassomethink.Longbeforeweapproachacomputerascomplexasourbrain,wewillperhapsbuildacomputerthatisatleastcomplexenoughtodesignanothercomputermorecomplexthanitself.Thismorecomplexcomputercoulddesignonestillmorecomplexandsoonandsoonandsoon.    Inotherwords,oncewepassacertaincriticalpoint,thecomputerstakeoverandthereisa"complexityexplosion".Inaveryshorttimethereafter,computersmayexistthatnotonlyduplicatethehumanbrain--butfarsurpassit.人脑与电脑的区别   要形容人脑与电脑的区别只需一个词，即：复杂。   即使是迄今为止人类制造出的最复杂的电脑如果与人脑的复杂相比也望