A great resource on this is gwern's page on spaced repetition[1], discussed previously[2] [1] https://www.gwern.net/Spaced%20repetition https://www.gwern.net/S

A great resource on this is gwern's page on spaced repetition[1], discussed previously[2] [1] https://www.gwern.net/Spaced%20repetition https://www.gwern.net/Spaced%20repetition [2] https://news.ycombinator.com/item?id=13151790 https://news.ycombinator.com/item?id=13151790