An unhappy fact about human psychology is probably at work here, which makes it hard to abolish lies once they have escaped into the world: We seem to be predisposed to remember statements as true even after they have been disconfirmed. For instance, if a rumor spreads that a famous politician once fainted during a campaign speech, and the story is later revealed to be false, some significant percentage of people will recall it as true—even if they were first exposed to it in the very context of its debunking. In psychology, this is known as the “illusory truth effect.” Familiarity breeds credence