[2021-12-11 Sat 11:13:27] title: Niklas Luhmann’s Card Index: The Fabrication of Serendipity source: https://sociologica.unibo.it/article/view/8350/8270
Luhmann’s numbering is not hierarchical in nature as sub-topics may diverge from the parent topic. It is only an indication of the current train of thought.
Numbering though alternate numbers and letters to represent an extensible tree structure.
Three types of links:
- overview of a subject
- outline for a train of thought
- direct reference
Keyword index serve as an entrypoint into the system. Only directly links to a few starting points for that keyword
“Underlying the filing technique is the experience that without writing, there is no thinking.” – Luhmann, Zettelkasten II, index card no. 9/8g