David Pogue reviews Al Gore's latest here.
The key point: "Thanks to all of the smoothly integrated multimedia, the book engages more parts of your brain than just the one that reads prose. As a result, Mr. Gore goes much farther in his mission — persuasion — than he could on the printed page alone." Abraham Lincoln, when he wanted to study a text, would read it aloud as he copied it, on the logic that he would not merely read it that way, but write, speak, and hear it as well. It sounds time-consuming--but, then again, so is immersing yourself in a multi-media project with "over an hour" of narration.