The word skepticism is everywhere used in human being's behavior widely, but in other cases it is not used. In some cases it is used. Before we buy a used car we are skeptical, superstitious things we are not skeptical. We readily accept that the dead person's soul can be brought into contact and that there are extra terrestrials. When asked vague questions to them, we get answers easily but when somethings specific has been asked to answer is available. Skepticism and acceptance of new ideas openly are both equally important in life. If we accept anything ideas without questioning we cannot distinguish the useful ideas from the useless ones. Scientists take many new ideas and examine them critically. They send the filtered ideas outside in the world where they are again criticized by t=other scientists. Sometimes they may be proved wrong after everybody has accepted them. Then scientists realize their after everybody has accepted them. Then scientists realize their mistakes, but in politics leaders never change their minds.