The many "flaws and failures" identified were those "likely to disrupt the comprehension or memory of the material. In a family discussion about what to do on a given evening, for example, I feel like pulling out my laptop and giving a Vugraph presentation For this reason, Kosslyn says, users need specific education to be able to identify best ways to avoid "flaws and failures":  Specifically, we hypothesized and found that the psychological principles are often violated in PowerPoint slideshows across different fields I said, "Bill, I think we really ought to do this;" and Bill said, "No, no, no, no, no, that's just a feature of Microsoft Word, just put it into Word.
Worried about multiple file versions when you work on PowerPoint mobile? The result has been the rise of presentation culture. Not least, it ties up junior officers They found that some of these ways of using PowerPoint could influence the content of presentations, for example when "the slides themselves have to carry more of the substance of the presentation, and thus need considerably more content than they would have if they were intended for projection by a speaker who would orally provide additional details and nuance about content and context.