I had never really looked that much into powerpoint before, I had just thought of it as an easier way to do a project. I think that statement in itself shows that Tufte's arguments against powerpoint are correct. He explains it perfectly when he describes powerpoint as a few words and a piece of clip art. I do, however, think that in some cases powerpoint is appropriate, but in most you would probably get more out of writing a paper as much as I would have hated to do that. The use of powerpoint affects the audiences interpretation completely in the sense that they get as little out of it as the person who made the powerpoint. I think it could be made to good use for things like definitions and little facts, but not an entire subject. The audience has basically a few minutes of reading( if that) and a few pictures to look at. If that is the entire basis of your project, there really isn't that much to it. Possibly pairing a powerpoint up with something that takes a little more work would help you get more out of it. But then again how many kids would actually do the project if there was more work put on it?