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.
The doomsday clock â a theoretical device that purports to tell us how close we are to a nuclear apocalypse â has frozen at five minutes to midnight, unchanged from last year. Physicists tell the head of the UN there is little reason to move it back.