Have you ever heard of Dave Lindorff? Probably not. But Lindorff, a writer who occasionally covers politics, recently pulled a good one on the Washington Post, New York Times, and a number of other news outlets. In an article, "Bush's Mystery Bulge," published in the left-wing online journal Salon, Lindorff speculated that President Bush might have been "literally channeling Karl Rove" in the first presidential debate — that is, wearing an invisible earpiece attached to a radio receiver through which Rove could feed him answers to vexing questions. Lindorff's evidence was a freeze-frame from the debate which he said showed...