Using a Zettelkasten is about optimizing a workflow of Learning and producing Knowledge. The products are texts, mostly. The categories we deem fit currently are the following: * **Knowledge Management:** general information about what it means to work and learn efficiently. * **Writing:** posts on the production of lasting knowledge, and about sharing it with others through your own texts. * **Reading:** posts about the process of acquisition of new things and the organization of sources. site

Good introduction by Bryan Kam page with a follow up. page . Consider Niklas Luhmann's Text about Communicating with Slip Boxes.

The core of this Personal Knowledge Management process revolves around two collections of notes: Reference Notes which summarise source material and include a link to the source, and the collection of Evergreen Notes which are written in the interpretive part of the process.

The 20th-century German sociologist Niklas Luhmann managed to publish 70 books. He credits much of his success to his Zettelkasten, or "slip box."

_Luhmann, N. (1992). Communicating with Slip Boxes. In A. Kieserling (Ed.), & M. Kuehn (Trans.), Universität als Milieu: Kleine Schriften (pp. 53–61). page _

see also *Der digitale Zettelkasten* post and *Niklas Luhmann-Archiv* site