Incontemporarysociety,artificialintelligencedeviceswhicharemoniteredbysmartcomputersoftwaresareplayingessentialroleinpeople'sdailylives.Thus,somepeoplemaypredictthecomputersysteminfuturewillbesoadvancedtoreplacethefunctionofourbrain.Inmypointofview,ourbrainsareindispensibleandcannotbereplaced. 　　Atthebegining,nowmatterhowsophisticatedthecomputersoftwaresare,theyareallcreatedbyourbrain.Inotherwordsourbrainsarepriortoallsortsofdevices.Besides,itishumanthatperceivethedrawbacksofcomputersystemandtrytoupdatethemconstantly.Therefore,ourbrainsaremuchmoresophisticatedthanallelectronicdevices. 　　Moreover,thereareagreatnumberofthingsthacannotbedonesolelybycomputer.Forinstance,althoughthehigh-intelligentcommunicationdevicesarefullofourlivessuchascellphoneandinternet,humanisstillthemainbodyofthecommunication.Thosefacilities,whichcanhelpusconquertheproblemscausedbydistance,cannotthinkforus. 　　Allinall,eventhoughthecomputersystemnowadaysarehighlydeveloppedthefuncationsofourbrainsarestillindispensibleinthattheycreatethosedeveloppedtechniquesandtherearestillmanythingscanbedonesolelybycomputer.