zettelkasten method
pile of index card (PoIC)
Zettelkasten explained in details
https://writingcooperative.com/zettelkasten-how-one-german-scholar-was-so-freakishly-productive-997e4e0ca125
https://eugeneyan.com/writing/note-taking-zettelkasten/
https://eugeneyan.com/writing/why-read-papers/