I’m new here, so i apologize if my question is in the wrong place. Is it possible to add more than 8 intervals? At the moment with the last interval at 2879 hours this would imply concepts are mastered if you remember them after 120 days. Has there been research on this or why was 120 days specifically chosen?
I’m pretty sure if I am learning a word i rarely see it could very well be that I don’t remember the word 6 months later. I was wondering if there was any way to add more intervals so you could still be tested on it 6 months and a year etc later. Essentially i was wondering if intervals could be infinitely increased to the point you won’t see the word again for another 50 years if you know it well enough.