First, I find it's unproductive to make psychological diagnoses of people you haven't met before. Having met actual pathological liars there is not remotely enough evidence that Lehrer is one, unless you're just using the word to mean "a liar I don't like," in which case you're cheapening the phrase.

Second, do you really want a world where errors -- even massive ones -- automatically disqualify you from being relevant again? Where there are no second acts in American life? I do think there are places where that makes sense, but they tend to be places where the supply is perceived to be abundant and commoditized. Ergo why we encourage failure amongst entrepreneurs.

Nobody automatically deserves forgiveness, but I do think Lehrer is a giften enough storyteller that we should not necessarily consign him to the dustbin.