Wow. This method is so ridiculous I just might have to copy it.

Seriously though, I hadn't thought about using that time (which most people are guaranteed to have every single day, several times a day) for learning new things. I think I may start using this method for exploring things that I'd "like to learn some day" but that aren't urgent/currently important for my job. This would be a way to at least make me get started learning something genuinely new!