> 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.
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.