What exactly is Big Data? This video defines and explains Big Data as well as Hadoop and MapReduce in simple language.
Rating Newest Oldest. Best Answer: Time is an illusion in that it's not a real, *natural* feature of the universe. Time is not absolute, meaning there's no Cosmic Master Clock that ticks off the correct time for the entire universe.
Definition of illusion. 1  1a obsolete : the action of deceivingb (1) : the state or fact of being intellectually deceived or misled : misapprehension (2) : an instance of such deception.