Therefore, it is important to keep the content of the presentation short and concise. This shortens the video, reduces the viewers wait-time, and focuses the viewer upon the subject matter at hand.
Test scores are another example.
Rather than discussing stats about a test within the video, this text-based data can be placed on a web page where the viewer can review it at their convenience. If the viewer wanted to write down the stats as they were discussed within the video, they would have to rewind to the point where stats were being discussed. This can be a difficult and frustrating process. Moreso, depending on the format chosen for the web page that is to contain the video, there may not even be a rewind button. While everyone naturally makes gestures while they are presenting material, it's good to keep in mind that the more movement there is in a video, the more network traffic that is created, and hence, a slower delivery to the viewer.