The human body has a wonderful immune system that fights any foreign cell that enters the body. It fights any bacteria or virus that enters our body, which our bodies recognise as foreign elements. During COVID-19 times, many patients developed autoimmune disorders wherein the immune system becomes over-aggressive and starts attacking various of our own cells. The doctors had to administer many medicines that would suppress the immune system by administering steroids . This sense of "I" within human beings also works like an immunity system. It protects us, "me" and "mine", from the foreign elements that may be dangerous to the survival of "me" and "mine". Like the immune system, it also has many layers. The first layer is the skin, which prevents foreign elements from entering our body. Similarly, we ignore many people who may be dangerous. For example, we often tell children not to join a group of druggists and criminals because t...