While this is great for making a presentation, it makes it Really Hard to learn anything at all from a presentation for which you do not have a video recording.

While this is great for making a presentation, it makes it Really Hard to learn anything at all from a presentation for which you do not have a video recording. I've frequently seen Slideshare (or similar) presentations that look like a disjoint selection of code examples and meme images, with a narrative that is only barely hinted at.