Is Space Repetition Transferable to Other Things?

What I would like to see more of is people, for example, tracking their time. If you're reading a book in SM, how much longer or shorter did you spend on that in SM than you would have if you just read it normally? That's worth knowing. And the problem right now is we also don't have a metric of recall that is outside of your own items. So even if I have a question about something, will I be able to answer a similar question that comes up in real life? Right. We need things like that.And what I would really like to see is like you say, progress reports. I want to see someone who was dumb and now they