What I particularly like about Tufte is that he understands the economics that drive bad design. He's not preachy about it; you can listen to the talk and come away with the idea that good design simply means paying attention to content - revolutionary enough, if taken to its conclusions.

But every once in a while, an enumeration, with the same conviction that previously applied to some cognitive model or historical fact, veers into commercial, exploitative realities, without missing a beat, perhaps with a brief glance at the audience.