Zettelkasten — How One German Scholar Was So Freakishly Productive decoding.io
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@zsbenke His actual notes are all online. I don't read German, but there is an article with photos here: www.heise.de/newsticke...
@kerim: You can even browse some of them online. https://niklas-luhmann-archiv.de/bestand/zettelkasten/tutorial
