Marshall, in looking at your cards, I'm curious how easy/hard you feel it is to remember longer portions of full quotes like your H.L. Menken example using only spaced repetition? I usually find it far more taxing and not as long lasting as using other more classical mnemonic methods (method of loci/songlines).

Piotr Wozniak has some material on creating/designing more concrete cards for spaced repetition that I've found generally helpful. I know that Andy Matuschak and Soren Bjornstad have some ideas, experience, and research in the space but I've yet to see more deep research on the effectiveness of these more specific practices at scale or beyond the anecdotal.

https://marshallk.com/7-steps-i-take-to-get-value-from-what-i-read-notes-on-note-taking-review

http://ratfactor.com/cards/cards-inspiration

While his collection of public notes is extremely limited, Dave Gauer does provide a list of his inspiration and precursors mostly focusing on Soren Bjornstad's influence as well as Ward Cunningham's wiki.c2.com site and inspiration from Umberto Eco and Vladimir Nabokov.

https://www.youtube.com/watch?v=9eP8Bq9x5yw

A nice overview of spaced repetition systems.

Soren Bjornstad previously worked for Anki and is now at Remnote.

I wonder if anyone has created a spaced repetition system set up that leverages Hypothes.is? It would be cool to write questions and answers as one takes notes in Hypothes.is and then be able to quickly/easily export those annotations into a spaced repetition system.

Example:

Q: What is the best annotation tool on the inernet?

A: Hypothes.is