Even if only a small percentage of people do the exercises they read about, and only some of the time, that still scales better than in-person classes.

That's a good point . I am not sure about the numbers today: how many people read LW, how many percent of them would do the exercises, is it more than minicamp participants? But these numbers could be improved by e.g. converting the minicamps into series of online lessons.

I guess this is a great opportunity for a CFAR volunteer with video-editing skills.