In a way its not news.
Really that headline has been re-run endlessly from net start.
But re-inventing the wheel one should be gracious over. So no more on that.
Luhmann is very interesting though. As is his baby "Zettelkasten"
I have started several discussions here related to it. The most recent being:
What is a Fragment? Which has a quite rich discussion that goes into Zettelkasten.
Luhmann was a brilliant sociologist (I'm a social scientist). BTW, he also liked doing stuff cheaply. Many of his records were on discarded paper. Old letters cut up.

That is a difference from computer cleanness. Analogue allowed bigger scope for character.
Josiah, x