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The way science and technology has leaped forward in the recent past is indeed an astonishing feature of the modern era. The magic wand of technology has enabled man to roam around the world, to peep through every nook and corner of the universe. The essence of the advancement of science and technology is the thirst for knowledge. We wonder agape at the fast changing environment around us. Sometimes we are baffled by the changes; we cannot decide whether those are good or bad, or whether those are beneficial at all to the human civilization.
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