A fast overview of the information laid out before you can mean indeed that you can grasp some high-level concepts before you loose your focus within the detail

A fast overview of the information laid out before you can mean indeed that you can grasp some high-level concepts before you loose your focus within the details. But it can mean no more than a summary, and maybe it can give you the intuition of where to focus more for the details (depending on the context and your personal approach); but this is usually limited to a very small segment of the presented info. On the other hand, when I meant 'slow' I was not referring to the mechanics of the video, I was referring to the pace of acquiring the information, the meaning behind the spoken words/images succession. I think the fast-paced reception of the information can lead only to an illusion of understanding; pausing the video from time to time in order to look up for more information elsewhere, rewinding some sections, etc. were closer to what I had in mind, not the slowing down of the video, as you apparently understood. I'm sorry I was not clear enough the first time, I hope now I mended my argument a little...