I think I've asked before, but couldn't find the answer. How does scheduling for wrong items work? I'm particularly thinking about what happens if I have an item scheduled for five weeks and I get it marginally wrong. If I leave it marked as wrong what would it get rescheduled as? I don't want to mark it wrong and then find it's scheduled for a very short time and all the times I got it right are forgotten.

In my head I think of the scheduling as doubling up the time between repetitions as you get it right, and logically it seems like it should halve the time as you get it wrong. Is that roughly accurate?

Right now, it's closer to say the scheduling quarters the time, roughly, so it takes you two steps back as opposed to one step forward. How much it moves it back adjusts, just as how much it moves items forward adjusts, depending on your target retention rate. Scheduling it at the base length of time is how it used to work, since that's how SRSs tend to work. We changed it though since it seemed to be pushing things back more than was necessary. We haven't made it so that it distinguishes between totally wrong and marginally wrong; you either get it right or wrong at this point. Hopefully this summer though we'll get the chance to do some work on the scheduling system so that we can improve it and maybe work in some more subtle scheduling decisions like taking into account how many strokes you were able to do without looking, things like that.

So now you know!

That makes sense, thanks for the explanation.