Psychology of Persuasion

People will barely admit it when they make their decisionsmainly because they are influenced by others. Many don't evenrealize it when that is the fact, but years, thousands of years, people have been doing the same thing to get people to doand react the way they want them to. It is the art ofpersuasion that begins early age as we beg our parents to buythat toy we want so badly. It continues up to when we growup and persuade our customers to purchase a product hemight never need.
Why is persuasion so powerful and why dopeople fall for it?