Works
- Kommunikation mit Zettelkästen: Ein Erfahrungsbericht, 1981
In Thinking Tools
Known for
A systems theorist at Bielefeld University, he kept a slip box of numbered, cross-referenced notes for decades and described it in this essay as a partner in communication: notes are filed by number, linked to related notes, and found through an index, so new connections surface as the collection grows.