Does FSRS solve "ease hell"?


Let’s assume that I have many very difficult cards which I learn for a very long time at the beginning by hitting the “Again” button again and again.

After some time, I was able to master the concepts on those cards, and I started hitting “Good” again and again.

Will FSRS optimize the scheduling of those cards, or is the ‘ease hell’ still possible?



Also, unlike SM-2, FSRS doesn’t suffer from the problem of “Ease Hell”. This problem is solved by mean reversion of difficulty. If you press good continuously, the difficulty will converge to D0(3). For more details, read The Algorithm.

However, note that you should not change your rating habits. This is because FSRS uses your past rating history to determine optimal intervals for your future reviews.


Thanks for so complete reply - I checked whole FAQ.

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