There's a story of an exhausted tenor at La Scala who, facing repeated cries of "Encore," responded that he couldn't go on. A man rose in the audience to say, "You'll keep singing until you get it right."
He says it much better than I could. In fact, I'll confess that after twenty minutes of teleprompter tag, I turned the thing off and went to bed.
Einstein's Definition of Insanity...
...doing the same thing over and over and expecting a different result.