This year I stopped using Powerpoint slides in my lectures. Well, not completely. It can deliver some content better. Many student remarked to me that it was a better experience. No doubt the students who felt differently would be less likely to tell me that.
According to this article in the Atlantic students retain more information if notes are taken by hand than typed. Interesting. If I ditch powerpoint and ban laptops in class that would waste the expensive infrastructure the university has installed. Surely, the university conducted a study on the efficacy of this teaching methodology before investing such large sums in projectors and classroom wireless. So this study must be bogus.