I thought it was a video and that I couldn't find the play button at first. Then I looked for a transcript and couldn't find that either. Finally I thought maybe it was an audio player with a slideshow that follows along.

When I realized it was just a slideshow, I was disappointed. Slides are meant to highlight points, illustrate concepts, and provide focus during a presentation, but they aren't meant to replace it. The only purpose in sharing slides is so that the folks who saw the presentation can remember it better.