A 24-year-old man is looking out of a train’s window and shouting loudly… “Dad, look the trees are going behind!” His father smiled and noticed a young couple sitting nearby, who were observing the 24-year old’s childish behaviour with pity. Suddenly the young man again exclaimed… “Dad, look the clouds are running with us!” The couple couldn’t resist and said to the old man: “Why don’t you take your son to a good doctor?” ”The old man smiled and said…“I did, and we are just coming from the hospital, my son was blind from birth, he just got his eyes today.”