Two babies.....One is Laughing and playing with it's feet the other is crying and crying and crying and crying. The difference. The crying baby is worried about the future that it can not see except through its own fear. The Laughing Baby playing with its feet is retarded...we should all run in fear and be scared every moment of our lives...wait....ooops...wrong ending....the laughing baby is living in the moment and not concern with the uncontrollable.