I just took a look at my Chinese vocab lists and one item isn't due to for review for another 6 years and another one 8 years. Can this be correct?

Let's guess it is 一 and 中?

It's probably not a bug, but potentially an inaccuracy of scheduling. We don't have data to tune our scheduling algorithms at that kind of range, so it may be whack.

Those are probably very easy items, though, that you've seen many times while studying them in other words (一，不，了，们，天, stuff like this?). Is it plausible that you would remember them for years without having to practice them?

I have got the character 一 coming up 9 years from now :-)

Marc

I hard coded it to schedule an item no more than 10 years after the last time it was studied. I can lower that limit and manually bring down items that have been scheduled far in advance. If you got something right every time you've seen it, scheduling bumps it up faster than normal as well. I'm going to decrease that effect though; I think it may be doing too much.

When we do Anki style scheduling you'll have more control over how far ahead an item is scheduled for, if you want to have that kind of control.

And if you want to study something early, you can always cram it! The next scheduled time for review will be reduced with each time you get it wrong while studying it in cram mode.