Since postmodernism says that the truth is just a thing that people invent, people can believe different things and think it is the truth and all be right. Postmodernism says that one person should not try to make another person believe what he believes, because it means nothing to say that one belief is right and the other is wrong. Postmodernism says that if somebody has a belief and tries to make somebody else believe it also, it means that they are just trying to have power over them.