Who's in your personal Top Ten of the greatest Zettelkasten users in history?
One name springs to mind, but who are other possible candidates?
What are the distinctive qualities of their ZKs and the interactions between user and ZK?
Or perhaps there is something wrong with the question? I am grateful for any insights and opinions.
I suspect there might be some controversy about which note-making systems from the past qualify as zettelkasten - let's see.
Luhmann's article about communicating with ZKs appeared in 1981, so a lot of people following in his footsteps are still living and working and it might be awkward to discuss their accomplishments.