> I probably spend the same amount of time watching the lecture as I would at normal speed. The article's title does not suggest you should do otherwise, thoug

> I probably spend the same amount of time watching the lecture as I would at normal speed. The article's title does not suggest you should do otherwise, though its body suggests that you could do just as well, with a single 2X pass, as with a single 1X one. I also use a variable rate, depending on the complexity and novelty (for me) of the material, and also how well it is presented. I also do this for better comprehension, not to get through it faster. I find it useful to have subtitles on, when available.