The reason he was so economical with notes per keyword and why we too should be very selective lies in the way the slip-box is used. Because it should not be used as an archive, where we just take out what we put in, but as a system to think with, the references between the notes are much more important than the references from the index to a singl

Luhmann had two slip-boxes: a bibliographical one, which contained the references and brief notes on the content of the literature, and the main one in which he collected and generated his ideas, mainly in response to what he read.

Zenware (término acuñado por el periodista independiente Jeffrey MacIntyre en 2008) parte de la premisa de que las herramientas simples son más valiosas que las complejas a la hora de realizar tareas múltiples.