So positive and negative numbers or mixed numbers or special type of numbers can be a useful symbol to make the machine understand and react a person’s mood, demand or action. A machine, if it can understand a person and his or her way of thinking, it surely can understand the difference between an emotional person and a person with no emotion. It also can detect an individual with anger or sorrow or particular attitude to his own or to others. At least it will be easy to record the bio-data of a person. There are psychologists to measure the person but hardly that are understandable by the machine as well as the computer. As a human can understand an individual, a machine, for example a computer can’t.