Presentations: the single most powerful PowerPoint slide you can use

 PowerPoint problems run rampant in presentations, from busy, overdone slides that are impossible to read to poor usage where the speaker talks to the slide or blocks the screen. While there are lots of ways to improve slide quality and enhance PowerPoint usage, there is one little known, but powerful, strategy that can improve any PowerPoint presentation and put the focus more on the speaker, where it belongs. 
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