Comment by thwarted

For presentations, I've observed that constraints on number of slides encourage people to try to stuff a bunch of information at small font sizes on a single slide, often big blocks of text. And they are laying it out on a high dpi screen that ultimately gets scaled down when presenting (especially with screen sharing). They'll have two data points in a small font and massive amount of empty space on the slide. Very few people know how to use presentation tools effectively and most are terrible at information design.