《Aninvention》 　　Iwillinventatimemachineintheasit'sbeenmydreaminmylife.Timemachineallowspeopletotravelbackintimetopreventdisastertohappen.ItalsoallowspeopletotavelintodinstantfuturetofindoutsolutionforIncurableillnessincludingcancerandaids.However,thismachinemaybeabusedbypeopletocreatechaosinourworldorevencompletelychangeourhistory.Therfore,securityfeaturesareessentialformyinvention.Thefutureinventionoftimemachinewilldefinatelybringmoreadvantagesforhumanbeing.