The focus of a good presentation is the presenter, not what’s on the screen. Bad talks make the audience divide their attention between what is being said and w

The focus of a good presentation is the presenter, not what’s on the screen. Bad talks make the audience divide their attention between what is being said and what is being shown. What would be shown on a scrolling display? Probably text. Text requires concentration to read, which means asking the audience to divide their attention. For what it’s worth, if you want something like a scroll effect, I can think of a couple ways to make it happen in Keynote or PowerPoint.