A tacit assumption is that PowerPoint computer presentations are merely a means to an end, a value-neutral tool used for innocent, even noble purposes: enlarging text for the hard of seeing; reducing the demand for printed materials; bringing younger people, who spend much of their lives in front of screens—TV, computer, cell phone, PDA—into worship. But PowerPoint is not value-neutral. As information design analyst Edward Tufte has argued, PowerPoint promotes a kind of cognitive style that routinely disrupts, dominates and trivializes content.