He is an exception in that he wrote about note-taking from the perspective of someone who used his system to make serious contributions to systems theory and various other fields.

But he's a great demonstration of Matuschak's point. Luhmnam wrote dozens of books about a wide range of topics, enabled by Zettelkasten, and then wrote a couple of essays towards the end of his career about how he did it.

> he wrote about note-taking

Did he? I though we have his archive and we know how he used it (from some interview, I think). Didn't thought he wrote about it directly in his system. Do you have source on that?

Communicating with Slipboxes

http://luhmann.surge.sh/communicating-with-slip-boxes

I wish this were less abstruse.

Thank you!