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[[Zettelkasten]] [[Luhmann, Niklas]] [[writing technologies]]
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[[Writing Philosophy with Hypertext]]
- [[A Brief History of Linked Writing]]
	- [[Analogue Linking]]
	- [[Zettelkasten]]
		- **[[Zettelkasten Linking]]**
	- [[Digital Linking (Hypertext)]]
	- [[Notetaking Software (PKMs)]]
# Zettelkasten Linking
- Luhmann used alphanumerical identifiers to organize and reference notes in a heterarchical slip box system unified by a primary index correlating the identifiers with topics. 
	- Luhmann included two main forms of note linking.
		- First, the note identifiers were themselves arranged hierarchically so that A.1.b.2... would refer to a topic A, subtopic 1, subsubtopic b, subsubsubtopic 2, etc. The identifier, along with the index, relates the note to others in the same topical or argumentative chain.
		- Second, Luhmann used identifiers in the text or meta-data of his notes to establish direct relations between two notes. 
		- For example, a Zettelkasten index might include the following:
			- A: On Writing
			- A.1: On the Philosophy of Writing
			- A.1.a.3: On the Philosophy of Word Processing
			- B: On Computers
			- B.1.a.1: On the History of Word Processing
		- And then one might link directly between say A.1.a.3 and B.1.a.1 to reflect a conceptual link between the history and philosophy of word processing.
	- As one can image, Luhmann's Zettelkasten became rather cumbersome both physically as the paper notes grew in size and organizationally as note identifiers became more complex and retrieval grew more involved.
	- Note that there's no direct historical connection between Luhmann and the inventors of hypertext / wiki systems, through there is a connection between Luhmann and modern notetaking software.
## References
- See [[Zettelkasten]].