" This distinction between believing-a-lie and disbelieving-the-truth is important because it forces attention to the twin dangers for the lie catcher. There is no way to avoid completely both mistakes; the choice only is between which one to risk more. The lie catcher must evaluate when it is preferable to risk being misled, and when it would be better to risk making a false accusation. "

― Paul Ekman , Telling Lies: Clues to Deceit in the Marketplace, Politics, and Marriage