So what are the odds that some influential McCullough-like scribe will one day start a trend by favoring Dubya with a measure of compassionate revisionism? “Not a chance,” said political scientist Larry Sabato, director of the University of Virginia’s Center for Politics. “He’s got three strikes against him, and history is not going to forgive Katrina, the Iraq War, and economic collapse. Good luck overcoming all that. Three strikes? Forget it. The best he can hope for is an average grade.”