关于人脑与电脑区别的英语作文
Thedifferencebetweenabrainandaputercanbeexpressedinasingleword:plexity.
Eventhemostplicatedputermanhasyetbuiltcan'tpareinintricacywiththebrain.puterswitchesandportentsnumberinthethousandsratherthaninthebillions.What'smore,theputerswitchisjustanon-offdevice,whereasthebraincellisitselfpossessedofatremendouslyplexinnerstructure.
Canaputerthink?Thatdependsonwhatyoumeanby"think".Ifsolvingamathematicalproblemis"thinking",thenaputercan"think"anddosomuchfasterthanaman.Ofcourse,mostmathematicalproblemscanbesolvedquitemechanicallybyrepeatingcertainstraightforwardprocessesoverandoveragain.Eventhesimpleputersoftodaycanbegearedforthat.
Surely,though,ifaputercanbemadeplexenough,itcanbeascreativeasweare.Ifitcouldbemadeasplexasahumanbrain,itcouldbetheequivalentofahumanbrainanddowhateverahumanbraincando.
Buthowlongwillittaketobuildaputerplexenoughtoduplicatethehumanbrain?Perhapsnotaslongassomethink.Longbeforeweapproachaputerasplexasourbrain,wewillperhapsbuildaputerthatisatleastplexenoughtodesignanotherputermoreplexthanitself.Thismoreplexputercoulddesignonestillmoreplexandsoonandsoonandsoon.
Inotherwords,oncewepassacertaincriticalpoint,theputerstakeoverandthereisa"plexityexplosion".Inaveryshorttimethereafter,putersmayexistthatnotonlyduplicatethehumanbrain--butfarsurpassit.