Spaced repetition world
From Issawiki (static archive)
https://github.com/riceissa/issarice.com/blob/master/drafts/spaced-repetition-world.txt
https://notes.andymatuschak.org/z6pxak95T6Kv8DPfzJULEymSjD4NCoNyPdsJa
See also
Categories:
https://github.com/riceissa/issarice.com/blob/master/drafts/spaced-repetition-world.txt
https://notes.andymatuschak.org/z6pxak95T6Kv8DPfzJULEymSjD4NCoNyPdsJa