My BS detector went off immediately when I read the link about Zettelkastens, and then I googled "Zettelkasten", and I skimmed through five different articles that were each pages long and talked over and over about how wonderful Zettelkastens are but didn't give any information about how they work or how to implement them practically. That's a pretty reliable indication that the service is the end, not a means to the end.
For the uninformed, a Zettelkasten is a searchable, unordered, labeled database. That's it.
I think your BS detector has a bug that may cause you to miss out on some good stuff! ;-) Sometimes there are ideas which are really good and very simple, but hard to explain because understanding them requires a shift of perspective which comes more easily from hands-on experience than from verbal explanations.
"Zettelkasten" is more of an attitude toward note-taking than a specific technique... it can be implemented in many seeingly almost unrelated ways, from Luhman's index-card box to personal wikis, etc. The defining characteristic is more in the way you integrate note-taking and note-review into your daily workflow and thinking process.
The best description I've found of it is this article: https://www.lesswrong.com/posts/NfdHG6oHBJ8Qxc26s/the-zettel.... Slightly long, but it completely describes how they work and how to implement them practically (on notecards). On the other hand, the articles on https://zettelkasten.de are pretty difficult to understand for the uninitiated.
> For the uninformed, a Zettelkasten is a searchable, unordered, labeled database. That's it.
I could spin up ElasticSearch or something similar and have it crawl all the files on my computer and get an 80% solution. Kinda like Apple's "Finder" functionality.
Almost, but not quite. Zettlekastenicians (Zettlekasatengineers?) try to only put succinct thoughts into their systems that they can tend and grow into larger productions of thinking or learning--there are some more specialized amounts of explicit metadata (your thoughts, ideas, inspirations, questions) that cannot be crawled and indexed by machine which will only see the implicit metadata.
If you index everything together you get something that it is merely a pile of searchable things. You do not experience the "conversation" with the slip-box as Niklas Luhmann described it. Software like http://zettelkasten.danielluedecke.de/ that implements the "digital version" of the system suffers from what I like to describe as the "Hudsucker Proxy" problem: A young idealist visionary comes out and holds a big plastic loop and mutters "You know... for kids!" and nobody has a clue what that is supposed to mean. It isn't until someone shows how to use the "big plastic loop" before anyone understands what's happening. And that's really hard to do with something as abstract as a Zettlekasten despite it just "being little notes gathered together with lots of numbers and letters pointing at the other notes" or an "unordered database".
Kind of, yes, but from my understanding of the original system as devised/practised by Luhmann was that the real value of it laid in the connections between the individual notes and the work of actually filing things away in that web of knowledge.
It's trivial to just write everything interesting down in whatever format, but the idea behind Zettelkasten is that by examining each piece of information before slotting it into its proper place in the grand scheme of things made you re-evaluate old notes and consider how things fit together as a whole. This aided memory and improved understanding of the topics.
My gut feeling says the concept is sound. You're not just archiving information, you're piecing together a complex web of knowledge and relating new information to what you already know, which in turn might spur original thought. That might happen with a wiki, but it's not a given.
Well, the original one isn't unordered, and isn't meant fundamentally to be "searchable" (its original "implementation" being index cards).
Here's my attempt at conciseness:
A zettelkasten is like a bunch of files in a single folder with
1. a naming schema that kinda indicates what follows what (an ordering scheme, but persnickety and optional, see https://zettelkasten.de/posts/luhmann-folgezettel-truth/), and
2. links in between the files, originally just by writing the names to be manually looked for.
Some people use 2 to be able to get rid of 1, as with an indication of PREVIOUS (link) and NEXT (link)
The point is that you have one thing on each card / file that you might want to go back to on its own.
It makes a lot of sense in academia where you want to be able to trace ideas in a referenceable way, identify your own takes on bits of other people's work, and connect different sources together when you see similarities.
My very elementary (just skimmed some blog posts about it for a few hours this morning [1]) understanding of why Zettelkasten is a game-changer is that: its a system of organizing notes in a bottom-up, atomic fashion, instead of the usual top-down categorization where the notes don't lend itself well to reviewing or linking with concepts you've previously learned. Basically, a graph (where links are bidirectional) instead of a tree. The power of such a system is that it maps closer to how knowledge is stored in our brains, and that the more you use the system, the better benefit from "network effects".
In traditional note-taking systems, the category is the most obvious first-class citizen. In ZK, the little ideas take precedence, because some little idea that belongs to category A can easily end up belonging to other categories B, C, D, ... as time goes on and you study more subjects/discipline.
I'm sure the idea I'm describing is nothing new, groundbreaking, or unique to ZK - but this is the impression that I got, and I've had the pain of having very poorly managed knowledge via Evernote/OneNote/Notion/etc. before. I also dabbled with Anki and mindmapping. I believe the optimal solution is to combine all 3, since mindmaps have the "graph" structure part down; Anki only focuses on recall, but not conceptual understanding/linkage; and traditional notes, while obviously storing more information, are usually organized in hierarchical top-down structures that don't lend themselves well to reviewing or building a deliberate map of knowledge.
Another alternative to mindmaps is something like Jerry's Brain [2], where irrelevant nodes are collapsed until you explore them. Jerry has given extremely compelling presentations because he's used it for something like 20 years.
I am aware of a bias as I write this: I simply might not have had enough discipline when using traditional note-taking systems before, and am going through a bit of a (pre) honeymoon phase with this new ZK stuff. Just my 2 grains of salt.
For the uninformed, a Zettelkasten is a searchable, unordered, labeled database. That's it.