Atomic Notes
- N - what larger pattern does this concept belong to?
- S - what more basic components is this concept made of?
- E - what is this concept similar to?
- W - what is this concept different from?
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you’ll write worthwhile notes that address your own questions and
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this hook of curiosity will help you remember as you learn.
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What does the medium enhance?
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What does the medium make obsolete?
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What does the medium retrieve that had been obsolesced earlier?
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What does the medium reverse or flip into when pushed to extremes?
- The search for interconnection
- How to be interested in everything
- Thoughts are nest-eggs
- Serious about a Zettelkasten?
- The card index has triumphed
- We can’t master knowledge
- Deleuze, Gilles and Félix Guattari (2004/1980). Rhizome. In A Thousand Plateaus: Capitalism and Schizophrenia, trans. Brian Massumi. New York: Continuum, pp. 3-28.
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a composite name made up of Günter Grass and Max Frisch, with more than a nod to the old Knecht, the Magister Ludi of The Glass Bead Game. ↩︎
- Record your thoughts, one by one.
- “Each thought that is welcomed and recorded is a nest egg…”
- Build up a collection of notes, without worrying about whether they are coherent.
- “…by the side of which more will be laid.”
- Connect your notes, creating a dense network of association.
- “Thoughts accidentally thrown together become a frame in which more may be developed and exhibited
- Construct meaning from your previously disconnected thoughts
- “Thought begat thought.”
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Manuscript Collection #845, Innis Papers, Archives of the University of Toronto, Thomas Fisher Library, Box 8 ↩︎
Publish first, write later

“Literature is perhaps nothing more complicated and glorious than the act of writing and publishing, and publishing again and again."
- Marcelo Ballvé, on the curious writing career of César Aira
César Aira on the constant flight forward
Argentinian author César Aira’s writing process is more about action than reflection. In a moment I’m going to share with you an extract from The Literary Alchemy of César Aira, an essay by Marcelo Ballvé, originally published in The Quarterly Conversation in 2008.
But before coming to the extract, I’ll just comment on David Kurnick’s claim in Public Books that Aira’s work is primarily about process:
“It is not in the least original to begin talking about César Aira’s work by recounting the technique that produces it. But it can’t be helped: Aira has made a discussion of his practice obligatory. To read him is less to evaluate a freestanding book, or a series of them, than to encounter one of the most extraordinary ongoing projects in contemporary literature.”
True, I’m not being at all original here, just cutting and pasting. Still…

Aira’s own Aleph
It’s as though through his writing Aira has found the basement in Buenos Aires that contains the entire universe in condensed form, the basement that features in Borges’s 1945 story “The Aleph”.
And having found that fabled basement, it’s as though Aira has taken on the persona of Carlos Argentino Daneri, the character in Borges' story whose life’s obsessive goal is to write a poetic epic describing each and every location on Earth in perfect detail.
But instead of taking the find seriously, Aira parodies it. Everything is here: and what do you know? None of it makes sense! Or, perhaps instead of parodying “The Aleph”, he takes it completely seriously: Why not write about it, about all of it? What then? In an interview in 2017 for the New Yorker, Aira said: “I am thinking now that maybe . . . maybe all my work is a footnote to Borges.”
Of course I’m not just cutting and pasting. I’m writing too. Aira also inspires my own writing process. His example inspires me to choose my own race - and finish it.
One of my role models is the Argentinian author César Aira. He’s written a very large number of novels and novellas (at least 80 - around two to five per year since 1993), published by a variety of presses. That’s a lot of races and a lot of finish lines crossed.
Now here’s Marcelo Ballvé on Aira’s unique writing process.
According to Aira, he never edits his own work, nor does he plan ahead of time how his novels will end, or even what twists and turns they will take in the next writing session. He is loyal to his idea that making art is above all a question of procedure. The artist’s role, Aira says, is to invent procedures (experiments) by which art can be made. Whether he executes these or not is secondary; Aira’s business is the plan, not necessarily the result. Why is procedure all-important? Because it is relevant beyond the individual creator. Anyone can use it.
Aira’s procedure, which he has elucidated in essays and interviews, is what he calls el continuo, or la huida hacia adelante. These concepts might be translated into English as “the continuum,” and a “constant flight forward.” Editing is an abhorrent idea in the context of Aira’s continuum. To edit oneself would be to retrace one’s steps, go backwards, when the idea is to always move forward. To judge yesterday’s writing session, to censor a lapse into the absurd or the irrational, to revive a character your work-in-progress sent tumbling over a cliff—all of these actions go against Aira’s procedure. Instead, the system prioritizes an ethic of creative self-affirmation and, I would say, optimism. To labor to justify previous work with more strange creations that in turn establish the need for ever more artistic high-wire acts in the future—this is the continuum, the high-wire act the artist must perform when he refuses to submit to any rule that is not his autonomously chosen procedure. It is an act performed with deep abysses yawning to each side of him—conformity, market pressures, conventionality, self-repression of all kinds . . . In other words, Aira’s literary career, embodied in each of his 63 novels, is a reckless pursuit of artistic freedom.
Aira says that when he sits down to write his daily page or two, he writes pretty much whatever comes into his head, with no strictures except that of continuing the previous day’s work. (The spontaneous feel of his stories would seem to back up this claim, but I’ve always asked, can anyone write as well as Aira does while simply letting the pen ramble?)
True, his books are very short. Aira says in interviews that he’s often tried to make his novels longer, but they seem to come to a natural rest at around the 100-page mark. Technically, much of what Aira has written would have to be classified in the novella category, but it’s hard to classify Aira’s work within any genre, be it story, novel, or novella. In my mind, Aira’s creations are something different altogether. They are stories, pure and simple, which Aira has managed to ennoble by seeing them into publication in the form of a single book. What he has done is put stories into circulation as objects, which is a defiant feat when seen in the context of a global literary market that demands hefty, sprawling, “big” novels.
The key to Aira’s curious career, I think, is to be found in his conception of literature as something with more affinities to the realm of action than the inner world of reflection. Literature is perhaps nothing more complicated and glorious than the act of writing and publishing, and publishing again and again. Editing is dispensable, so is the search for the “right” publisher. (Aira publishes seemingly with whomever shows any interest in his manuscripts; at least a dozen publishers, most of them small independents, in Argentina alone.) The idea seems to be: publish first and ask questions later…In fact Aira’s mentor, the deceased Argentine poet and novelist Osvaldo Lamborghini had a saying: “Publish first, write later.”
Extracted from The Literary Alchemy of César Aira, by Marcelo Ballvé. The Quarterly Conversation
César Aira’s main publisher in English is New Directions. They’ve published about 21 of Aira’s works in translation, while And Other Stories has published another half-dozen.
Now read: Choose your own race
How to make the most of surprising yourself
Your collection of linked notes, your Zettelkasten, isn’t a ‘second brain’, as though it were separate from your first, actual brain. Rather it is part of your extended mind, which your brain creates constantly by co-opting its wider environment into its own processing activity. Brain and environment together create mind. In the case of the Zettelkasten it’s a very deliberate extension of the brain, with a few simple but powerful generative rules.
One of the interesting features of this deliberately extended cognitive tool is its ability to present you with surprises. Reading through old notes, for example, you may be surprised that you ever wrote this. And re-reading your work in the light of new information, you may have new flashes of inspiration or see new connections that weren’t previously visible. Or perhaps the juxtaposition of two seemingly unrelated notes will prompt you to create a third, which contains an entirely new idea.
In this sense, your notes become a kind of conversation partner, reminding you of what you once thought, and even challenging you to go further. It’s a living thinking environment, an ever-evolving ‘connectome’, which sometimes appears to have a life of its own.
Why not surprise yourself?
Philosopher Andy Clark is quite well known for claiming that the human mind extends beyond the brain, and that “human brains spawn and maintain extended human minds”.
In a podcast interview with Sean Carroll, he recommends artificially curating environments in which we can surprise ourselves. This temporary increase in uncertainty, he claims, reduces prediction error in the long term.
“it looks as if very often, the correct move for a prediction-driven system is to temporarily increase its own uncertainty so as to do a better job over the long time scale of minimizing prediction errors, and that looks like the value of surprise, actually, and that we will… I think we artificially curate environments in which we can surprise ourselves. I think, actually, this is maybe what art and science is to some extent, at least, we’re curating environments in which we can harvest the kind of surprises that improve our generative models, our understandings of the world in ways that enable us to be less surprised about certain things in future.”
Clark refers to the work of Karin Kukkonen, a literary scholar who has applied the idea of predictive processing to literature. This reminded me of Steven Johnson’s suggestion in his book, Farsighted that a good novel is a decision-making simulation. He extolls the sophisticated decision-making conundrums of the characters in George Eliot’s Middlemarch, over the simpler black-and-white decisions of Charles Dickens' characters.
So perhaps the surprise function of the Zettelkasten is more useful than at first appears. It isn’t merely an aid to memory, or a handy conversation partner, or a writing prompt. On Clark’s account, it may also enable precisely the kind of surprises we need and can learn from in order to understand the world better.
Of course, we constantly encounter surprises in everyday life, and sometimes learn from them too. But viewed through the ‘predictive, extended mind’ lens, the Zettelkasten presents a precise, controlled and deliberate laboratory for cultivating such a learning process.
I wonder how your notes have surprised you. Please let me know.
Some resources
Andy Clark on the Extended and Predictive Mind - [Sean Carroll’s Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas] (https://www.preposterousuniverse.com/podcast/2023/04/27/235-andy-clark-on-the-extended-and-predictive-mind/)
Clark, Andy. 2022. Extending the Predictive Mind, Australasian Journal of Philosophy, DOI: 10.1080/00048402.2022.2122523
Johnson, Steven. 2018. Farsighted : How We Make the Decisions That Matter the Most. New York: Riverhead Books an imprint of Penguin Random House LLC.
Kukkonen, Karin. 2020. Probability Designs: Literature and Predictive Processing. Oxford: Oxford University Press. ISBN: 9780190050962
See also
A network of notes is a rhizome not a tree
Learning to make notes like Leonardo

Leonardo wrote on loose sheets of paper
The Codex Arundel, a notebook of Leonardo Da Vinci, is not what it first appears. It isn’t a notebook that Leonardo used. For the man himself it wasn’t a notebook at all. It’s a collection of individual notes, bound for convenience only after his death. The British Library webpage observes:
“The structure of the notebook reveals that it was not originally a bound volume. It was put together after Leonardo’s death from loose papers of various types and sizes, some indicating Leonardo’s habit of carrying smaller bundles of notes to document observations outdoors.”
He wasn’t the first to adopt this habit. Beginning in the Fourteenth century it had become something of a fashion for Italians to create their own ’zibaldone’, a hodgepodge of notes on diverse subjects. Leonardo wrote of his notes:
“This is to be a collection without order, drawn from many papers, which I have copied here, hoping to arrange them later each in its place, according to the subjects of which they treat.”
The same is true of the Forster Codices, in the care of the Victoria and Albert Museum: they weren’t originally codices (books), but unbound notes.
“Leonardo probably worked on loose sheets of paper (bought at one of Milan’s many stationers' shops), which he carried about with him to record his observations. His papers were at some stage folded into booklets and later bound, possibly under the ownership of the Spanish sculptor Pompeo Leoni (1533 – 1608).” (https://www.vam.ac.uk/articles/leonardo-da-vincis-notebooks)
Many of the notes in the Codex Arundel were written in 1508, but they span most of Leonardo’s career.
The notes cover a very wide range as well as references to many different subjects. They include sketches of a mechanical organ and of an underwater breathing apparatus, There are notes and diagrams on mechanics, lists of proverbs and riddles, sketches on bird-flight, a household inventory, notes on optics and mirrors for producing heat, calculations on balances and weights, a plan for an urban quarter, and for a complete city, notes on the acoustics of drums and wind instruments, notes on river dynamics and on geometry, and a sketch of a cockleshell.
Leonardo Da Vinci - master of making notes
Here’s the German scholar Hektor Haarkötter, writing about the note-making expertise of Leonardo Da Vinci:
“Leonardo is the early master of the note [Nottizettel]. Today da Vinci is famous as an artist and painter, inventor and designer. However, he was not very productive as a public artist. Only about fifteen paintings that can be proven to have been created by him have survived, some of them in very poor condition or never completed. Leonardo da Vinci was really productive, however, in the privacy of his writing. He left behind over 10,000 sheets, drafts, scraps, snippets, sketches, papers, pages and slips of paper. (Many have been transcribed in Theodor Lücke, Leonardo da Vinci. Tagebücher und Aufzeichnungen. Leipzig, Paul List Verlag, 1953)
And this is only the part of his many records that have come down to us. Through his papers we know of other ledgers, notebooks, and codices, but they have disappeared, been scattered, torn apart, sold off, or in one way or another through the course of time, simply destroyed. How large the number of those records is of which we have no, well, note, is incalculable.
Already in Leonardo’s work all the characteristics of the note [Nottizettel] as a private medium are visible. He wrote in a code so that unauthorized eyes could not have read his notes. The universality of writing materials and forms of writing corresponded the universality of the subjects. From word lists and shopping wishes to technical drawings and philosophical notes to obscene and pornographic sketches. None of them was intended for the public, and the Renaissance master never published a book. He would hardly have been able to do so, he admitted to himself in his notebooks, which today are traded at astronomical prices at auctions, but which themselves lost an overview of his records.
What remains?
The amazing thing about the inconspicuous medium of notes is that from a hodgepodge of notes in the writing practice of writers and scientists, a completed book can emerge in the end. However we must not forget that, as a rule, only a small part of the notes, as a preliminary stage, finally ends up in the work. The larger part of such paralipomena [supplementary material, literally ‘things omitted’] remains, is never used, is hardly ever read again, and is often discarded and thrown away. Or the notes end up in the archives, where they are preserved as cryptic manuscripts, in worm-eaten folders or as messy single sheets, where they can enjoy the security of all basement magazines, never again to be viewed by human eyes. Notes are communicants after all without communicating. The path to the finished book is paved with media corpses.”
Source: Hektor Haarkötter, «Ich notiere, also bin ich» Notizen als Medien des Denkens Passim 28 (2021) Bulletin des Schweizerischen Literaturarchivs, p.4-5. Available at: <www.nb.admin.ch/snl/de/ho…> Translated with www.DeepL.com/Translator and a bit of imagination.
What can we learn from Leonardo’s approach to making notes?
Write everything down
Make notes. you never know when you’ll invent a diving mechanism, or a flying machine, or who knows what else? Toby Lester, author of Da Vinci’s Ghost, claims, “Whenever something caught his eye he would compulsively open a small notebook that he wore hanging from his belt and begin sketching furiously, with almost mind-boggling virtuosity. He loved his tiny sketchbook and recommended that all serious artists carry one.” “These things should not be rubbed out,” wrote Leonardo, “but preserved with great care, for the forms and positions of objects are so infinite that the memory is incapable of retaining them”. Leonardo plainly wrote (and drew) in order to think - and you can too.
Use your memory too
Don’t expect your note system to remember things for you. There is a view that writing helps you to remember. But Hektor Haarkötter calls this ‘a myth of the media’. “In fact,” he says, “there is hardly a more effective way to erase a thought from memory than to write it down. The problem of remembering is not solved by taking notes, but only delegated, namely from “What did I want to remember?” to “Where did I write it down?” And the larger the volume of notes, the smaller the probability of finding a specific note again.” So making a note is primarily the act of thinking itself, not a primarily a way to remember what you thought.
Do what works for you
Loose leaf pages worked for Leonardo, and he wrote thousands of them. He had a system that enabled him both to think and to capture his thoughts. Don’t wait for the ideal system to appear, when an OK one will do. And don’t over-complicate things. He didn’t have a Moleskine notebook, or Obsidian software. He just wrote.
Don’t put off the organisation for another time
Don’t put it off, because that day may never come.
Leonardo intended “to arrange them later each in its place, according to the subjects of which they treat”, but as far as we can tell, he never did. This is possibly a reference to the then popular practice of arranging notes in ‘loci communis’, or commonplaces - so called because there were several different standard systems of thematic arrangement by category. He didn’t get round to it. And later editors didn’t have much idea of what order to put his notes after he was gone. Who knows what he might have finished if he’d been a bit more organised at the outset. Don’t put off the organisation of your notes, because it will probably never happen.
Publish, by any means necessary
Notoriously, Leonardo hardly finished anything. Some of this, such as the unfinished painting now known as Mona Lisa, may have been deliberate. But on his death, Leonardo left his notes to his faithful pupil Francesco Melzi, who then left them to his son. The son didn’t value them at all and abandoned them to molder in an attic, so it’s amazing any of these now priceless notes survived at all. In fact the reason Leonardo is best known as an artist, which was not his main occupation (in 1482 he put at the very bottom of his resume for the Duke of Milan, “also I can do in painting whatever may be done”), is that the notes were effectively lost for generations and only really came to attention in later centuries. Don’t put off the publishing of your knowledge. Your pupils' children might not follow your instructions any more than Leonardo’s did. Share what you know with others. Don’t expect it to outlive you. Seize the day. You might think you’re no Leonardo. That’s right. You’re not. You are you, and that’s exactly what the world needs.
Furthermore, it’s so much easier to publish these days than it was at the time of Leonardo. There’s hardly any excuse not to press ‘send’.
There might just be a better system
I hesitate to try to improve on arguably the greatest genius of all time, but with the greatest presumption, here goes. Leonardo himself called his notes ‘a collection without order’, and perhaps a modicum of order might heave helped him. The system he never got around to using was that of ‘commonplaces’, extremely widely used during the Renaissance and for centuries after. The idea was that you’d catalogue your notes according to a more-or-less standard set of locations (i.e. common places). There are a few problems here.
First, it’s hard and uninteresting work to catalogue all your thoughts into predetermined folders like this. Perhaps that’s why Leonardo didn’t do it. Maybe it was just not important enough.
Second, even if you do want to file your notes, it’s not universally agreed what the folder names should be. Through the ages there have been numerous attempts to design a standard set of commonplaces, and none of them have stuck. One such is the Dewey Decimal System, often used for cataloguing library subjects. Not even all the libraries follow this particular system. Wikipedia has a list of ‘main topic classifications’, too. Though you might not know this, you probably haven’t suffered from your ignorance on this matter. To the ordinary Wikipedia user, it doesn’t really seem to make much difference.
Third, keeping your ideas in the categories within which they were formed tends to limit innovation and re-combination. For example, a folder of notes labelled ‘psychology’ doesn’t really tell you much and it keeps your psychology ideas artificially separated from your thoughts on art, or sport, or jokes. In fact, any categories tend to damp down the creative spark. Perhaps that’s why Leonardo’s ‘collection without order’ worked for him.
More resources
The Codex Arundel is at the British Library and online.
David Kadavy has a great podcast episode about Leonardo: Leonardo Mind, Raphael World – Love Your Work, Episode 290 Ironically, Kadavy sees Leonardo as ‘the greatest procrastinator who ever lived’. It’s ironic because, well, it’s Leonardo.
Hektor Haarkötter’s book on notemaking includes more on Leonardo as well as a host of other characters, but Notizzettel is currently only published in German.
And if you’ve read this far, you’ll love Gillian Hess’s Substack blog, Noted. She has already written plenty about Leonardo, which you can read by subscribing.
Meanwhile, on this site, I’ve also written about Aby Warburg’s compulsion to make notes, and about Ted Nelson’s evolutionary file list, and about the writing process of Henry Thoreau - and probably lots more about Zettelkasten I’ve forgotten about.
Finished reading: Farsighted by Steven Johnson 📚
Wrote 17 notes in 2 hours, and enjoyed doing it by hand. Realised this book is as much about novels - especially Middlemarch - as it is about making decisions. And that a good novel is a decision-making simulator. #Zettelkasten #Notemaking

A note on the craft of note-writing
An fairly new article from Brazil caught my eye, on note-writing as an intellectual craft. It highlights the German sociologist Niklas Luhmann’s note-making process (he put his many linked notes in a Zettelkasten - an index box).
Cruz, Robson Nascimento da Cruz, and Junio Rezende. “Note-writing as an intellectual craft: Niklas Luhmann and academic writing as a process.” Pro-Posições 34 (2023).
<doi.org/10.1590/1…>
https://www.scielo.br/j/pp/a/L7gmq6W7bvzgn984hSJ94
Abstract: "Despite numerous indications that academic writing is a means toward intellectual discovery and not just a representation of thought, in Brazil, it is seen more as a product of studies and subjects than an integral part of university education. This article presents note-taking, an apparently simple and supposedly archaic activity, as a way through which academic writing is eminently oriented towards constructing an authorial thought. To this end, we discuss recent findings in the historiography of writing that show note-taking as an essential practice in the development of modern intellectuality. We also present an emblematic case, in the 20th century, of the fruitful use of a note-taking system created by German sociologist Niklas Luhmann. Finally, we point out that the value of note-taking goes beyond mere historical curiosity, constituting an additional tool for a daily life in which satisfaction and a sense of intellectual development are at the center of academic life."
If you live your life in chunks, what size should they be?
Life tends to be lived in chunks. Hours, days, weeks, months, seasons, years - these are familiar if slightly artificial concepts. But what’s the best-sized chunk of life to focus on? Some would advise living in the moment, by which they don’t really mean the 86,400 seconds that are available in a single day. They effectively mean no chunks at all (or infinite chunks, perhaps).
Reading an article on why you should divide your life into semesters reminded me that I’ve already come across this idea in the shape of the book The Twelve Week Year. I actually bought The Twelve Week Year for Writers, which I’ve skimmed but haven’t read properly yet. I’d like to have a structure to my year that’s more than just “get through it”. But I’m daunted by the thought of needing something concrete to show for my time spent on earth. What did you achieve in your chosen chunk of life? This question won’t be answered by heartbeats or breaths, by sunsets or swims. It would be OK maybe if it could be answered with dollars, but that’s not really acceptable either. It’s too soulless. The question, what did you achieve? needs actual achievements. It needs productivity of the sort I’m not very available for.
@visakanv says “the meandering mind is a feature not a bug”. Why can’t I accept this? Perhaps because I keep putting myself in situations where the meandering mind is a bug not a feature?
I can just about manage to write a short note like this. And then another one… and so on. Austin Kleon calls this “Sisyphus mowing the lawn”. And indeed, I’m happy writing my short notes. If I can’t manage to organise my life into semesters, perhaps I can organise it into atomic notes - the shortest possible viable writing session.
I saw on the zettelkasten.de forum that some members log their note-making productivity on a 10-day rolling tally. One person has written 16 notes in ten days, another has written 33.
They are inspired, as am I, by Sonke Ahrens' exhortation to work as is nothing counts other than writing (well, some of them are).
"If writing is the medium of research and studying nothing else than research, then there is no reason not to work as if nothing else counts than writing.
Focusing on writing as if nothing else counts does not necessarily mean you should do everything else less well, but it certainly makes you do everything else differently.
Even if you decide never to write a single line of a manuscript, you will improve your reading, thinking and other intellectual skills just by doing everything as if nothing counts other than writing."
I’d like to know what kinds of time you find yourself dividing your life into. Do you mainly live in days, or mainly in hours, or perhaps weeks? Do you instead devote yourself to living in the moment? If so, which moment?
#reading
How to connect your notes to make them more effective
A linked note is a happy note
A great strength of the Zettelkasten approach to writing is that it promotes atomic notes, densely linked. The links are almost as valuable as the notes themselves, and sometimes more valuable.
But once you’ve had an idea and written it down, what is it supposed to link to? Is there a rule or a convention, or do you just wing it?

How are you supposed to make connections between your notes when you can’t think of any?
When I started creating my system of notes I didn’t know how to make these links between my atomic ideas, and this relational way of working didn’t come naturally to me. I would just sit there and think, “what does this remind me of?” Sometimes I’d come up with a new link, but more often than not, I didn’t. The problem is, the Zettelkasten pretty much relies on links between notes. An un-linked note is a kind of orphan. It risks getting lost in the pile. You wrote it, but how will you ever find it again? And if you do somehow stumble upon it again, it won’t really lead anywhere, because you haven’t related it to anything else.
Fortunately, there are some helpful ways of coming up with linking ideas that can really aid creative thinking and unlock the power of connected note-making.
Make a path through your notes with the idea compass
Niklas Luhmann, the sociologist who famously (to nerds) kept a Zettelkasten, didn’t exactly say this, but each atomic note already implies its own series of relations. Each note can be extended by means of the idea compass - a wonderful idea of Fei-Ling Tseng, as follows:
Notice how the first two questions promote a tree-like hierarchical structure, with everything nested in everything else, while the second two questions promote a fungus-like anti-hierarchical structure, with links that form a rhizome or lattice. Alone, the former structure is too rigid and the latter is too fluid. But put them together and they can be very powerful. The genius of the Zettelkasten system is that it absorbs hierarchical knowledge networks into its overall rhizomatic structure, without dissolving them, and allows new structures to form (Nick Milo helpfully calls these ‘maps of content’).
Find the larger pattern
Each atomic idea might be thought of as part of a larger pattern. In a sense, every note title is just an item in a list that forms a structure note at a level above it. Say I write a note on ‘functional differentiation’. I realise that this is just one component of a structure note that also includes ‘social systems’, ‘communication’, ‘autopoeisis’ and so on. I write this list, call it ‘Niklas Luhmann - key ideas’, and link it to my existing note. Now I have some ideas for some more notes to write. But will I write them all? No - I’ll only pursue the thoughts that actually interest me, or seem essential. The rest can wait for another day. Actually, I’m suddenly intrigued by what you could possibly have instead of functional differentiation (i.e. what is this note different from?), so I write a new note called ‘pre-modern forms of social structure’ - and link it back to my ‘functional differentiation’ note.
Look for the basic components
Going even further, the atoms, which seemed to be the smallest unit, turn out to be made of sub-atomic particles and so on, all the way down to who knows what (well, particle physicists might know, but I don’t). That means each atomic idea is really just the title of a structure note that hasn’t been written yet. So I take a new note and write: ‘Functional differentiation - the key points’. I imagine this new structure note to be like a top-ten list of important factors, each one ultimately with its own new note - but I’m not going to force myself to write about ten things that don’t matter, just what I find interesting.
When making links, trust and follow your own interest
It’s really important that you don’t try to answer all four questions with a new link. You’re not creating an encyclopedia. Instead, you should only make the connections that actually matter to you. The trace of your own inquisitiveness through the material is, in itself, important information. If it doesn’t matter to you, don’t write about it! Since the notes are atomic, and the possible links increase exponentially (?) the possibility space you are opening up is almost infinite and it can feel overwhelming. So just go with the flow. The key is to find your own curiosity and run with it. That way (as I’ve said before):
That’s what I’ve been doing this morning. At no point have I stopped to think “what shall I write next?” In this sense, the Zettelkasten is a kind of conversation partner. Niklas Luhmann said he only ever wrote about things that interested him. This seems unlikely until you try it for yourself.
And if you keep asking yourself these questions, you’ll find that over time the linking starts to come naturally. It will be increasingly obvious to you what relationships matter. The questions in the idea compass will become intuitive and fade into the background. Well, that’s my experience, but YMMV.
Apply a framework that intrigues you
Another way of making connections, besides the idea compass, is to apply a conceptual framework (or mental model) that interests you - and see where it leads. Here’s an example: Marshall McLuhan’s tetrad of media effects.
The idea here is that any new technology changes the whole landscape or ecology, by bringing some features into the foreground and pushing others into the background. It’s called a tetrad because there are four questions to ask of a new technology:
(This really clicked for me when I puzzled over why my kids don’t use smart phones for talking to people. It seemed crazy to me, but then I looked at question 3 and realised the new technology had retrieved asynchronous communication, which the telephone had previously made obsolete. But I digress.)
Anyway, I’m suggesting you might be able to take these four questions and ask them of the ideas in your notes. For each atomic note: what does this idea enhance, make obsolete, retrieve, or reverse?
Another simple but powerful example is Tobler’s law: “I invoke the first law of geography: everything is connected to everything else, but near things are more related than distant things”. What would it be like if you made everything about physical location?
It’s important to say these are just examples, and they may not work for you. Nevertheless, you may be able to think of frameworks from within your own line of work that allow you to ask a similar set of questions about your ideas. In my experience these frameworks are everywhere and yet are quite under-used.
This article is a lightly edited version of a Reddit comment.
You might also like to read about how a network of notes is a rhizome not a tree.
TiddlyWiki is a really useful writing tool
I use Tiddlywiki as a writing tool, and as a heavily customised Zettelkasten (an ‘index box’ of notes). I love how readily this toolkit can be tailored to suit my workflow and requirements. That means there isn’t really a best version, since it can become what you make of it. I was slightly confused when I started, since it’s different from other writing tools. But you can just start simple and slowly add the functionality that you like to use. Reminding myself to document all my changes and experiments, inside my TW, really helps. Superficially, it’s just a wiki app, but there’s so much more to it than that.
I find Soren Bjornstad’s online version,Tzk, very inspiring. It really shows some amazing possibilities for a personal Zettelkasten-style notebook. His GrokTiddlyWiki tutorial is fabulous too, but it’s a bit of a rabbit hole. Maybe better to just get started and then do the tutorials.
I love the look of Projectify and have used the notebook palettes that it comes with.
To enable backlinks I have found a couple of basic plug-ins really useful and would strongly recommend:
This adds a footer to your notes to show backlinks and freelinks.
This enables automatic renaming of titles and other items across links.
For a to-do list, I greatly admire Projectify, but what I actually use is the simple but effective Chandler, written by the late Joe Armstrong. He talks you through how he wrote it, which in itself is a masterclass in how to customise TiddlyWiki.
Finally I’ll mention the active and very helpful user forum.
If you’d like to discuss any aspect of TiddlyWiki or note-making generally, I’m all ears.
Ted Nelson's Evolutionary List File
Rick Wysocki has a great post introducing Ted Nelson’s innovative idea for a new kind of file system. New, at least, in 1965.
Ted Nelson’s Evolutionary List File and Information Management
In many ways though, we’re still waiting for this kind of approach to become available.
The 1965 paper begins with a programmatic statement that has still not been fulfilled:
“The kinds of file structures required if we are to use the computer for personal files and as an adjunct to creativity are wholly different in character from those customary in business and scientific data processing. They need to provide the capacity for intricate and idiosyncratic arrangements, total modifiability, undecided alternatives, and thorough internal documentation.”
Ted Nelson, in case you don’t know, was the first person to coin the term ‘hypertext’, and this is the first published reference to hypertext. In his post, Wysocki reflects on the connections across decades between Nelson’s ideas and the contemporary interest in ‘personal knowledge management’ and Niklas Luhmann’s non-hierarchical Zettelkasten system of notes. He sees the Zettelkasten as potentially more creative than many contemporary systems because it doesn’t impose a fixed system of categories from the top down.
“Creating hierarchies and outlines of information can be useful, but many don’t realize that outlines have to work on existing material; they are not creative practices themselves (Nelson 135b). This is why the common myth we tell ourselves and our students that an outline should be worked on before writing at best makes little sense and at worst is cruel; how can we outline ideas we haven’t created yet?”
He praises Nelson’s list file approach, where everything is provisional, and can be changed. Fixed categories are out; lists are in. Nelson saw his hypothetical system as a kind of ‘glorified index file’, which is where the connection with Niklas Luhmann’s (quite different) approach comes in. Sadly, most attempts at providing computerised tools for writers have thrown out the affordances that previous analogue systems offered, almost without noticing their loss. Nelson’s ‘Project Xanadu’, notoriously, was never completed. But there are some gains. I’m reminded of TiddlyWiki, in which nearly everything is a list, even the application itself.
The original paper , ‘Complex Information Processing: A File Structure for the Complex, the Changing, and the Indeterminate’, can be found online as a PDF.
A Network of notes is a rhizome not a tree

The Zettelkasten is not just an outline
The Zettelkasten approach to making notes and writing is not the same as creating a standard outline. An outline is basically linear and hierarchical. It’s a tree-like structure. It’s ‘arborescent’. The Zettelkasten on the other hand is a non-linear, non-hierarchical network, that includes hierarchical and linear structures, but is not bound by them. The Zettelkasten is more like a ‘rhizomatic’ structure. It has many connections, but no obvious central trunk. It’s like ginger.
The Zettelkasten can include outlines
The process of writing an article or book might well involve preparing an outline (e.g. a table of contents), but this is done from the contents of the Zettelkasten, not directly by the Zettelkasten itself. The idea is for the Zettelkasten to maintain a more fluid structure than a hierarchical outline, to allow idea formation, prior to the composition of a tightly-structured argument. I do have tables of contents, structure notes, ‘maps of content’, hubs, indices, etc. within my Zettelkasten, but ultimately each of these is just another note in the wider network.
Notes connect in several different ways
Links can connect notes in all kinds of directions. Niklas Luhmann emphasised this possibility of referral [Verweisungsmöglichkeiten]:
“When there are multiple options you can solve the problem by placing the note wherever you want and create references to capture other possible contexts.” - Luhmann, Communication with Zettelkasten
Consider too Daniel Lüdecke’s presentation on Zettelkasten structure PDF. This clearly shows what Luhmann did and didn’t do (according to Lüdecke at least - see especially slide 31 or thereabouts).
Avoid premature closure
A finished piece of work such as a book or article is fixed. Its structure is basically final. This is not true of your notes. They are still fluid, still open to shuffling and re-shuffling. The Zettelkasten’s adaptive structure is confirmed by Schmidt’s summary:
“At first glance, Luhmann’s organization of his collection appears to lack any clear order; it even seems chaotic. However, this was a deliberate choice. It was Luhmann’s intention to “avoid premature systematization and closure and maintain openness toward the future”. A prerequisite for a creative filing system, Luhmann noted, is “avoiding a fixed system of order”. He pinpoints the disadvantages that come with one of the common systems of organizing content in the following words: “Defining a system of contents (resembling a book’s table of contents) would imply committing to a specific sequence once and for all (for decades to come!)”. His way of organizing the collection, by contrast, allows for it to continuously adapt to the evolution of his thinking.” - Johannes F.K. Schmidt. ‘Niklas Luhmann’s Card Index: Thinking Tool, Communication Partner, Publication Machine’, in Cevolini, Alberto.; Forgetting Machines : Knowledge Management Evolution in Early Modern Europe. Brill, 2016. Ch. 12, p. 300. PDF
A disclaimer
Your mileage may vary. When turning your note-work into a network, do what works for you, not what worked for a dead German sociologist.
See also:
The mastery of knowledge is an illusion
The writing task always eludes us.
CJChilvers sees in the slow but inevitable demise of the Evernote app a deeper critique of the concept of the ‘external brain’. Indeed, this term is rather clumsy marketing-speak, hardly improved by Tiago Forte’s version: ‘Building a Second Brain’.
I only have one brain, and it’s internal, thankfully. But I’m still very happy with the idea of the ‘extended mind’. My brain remains firmly in my skull, but it nevertheless uses the environment in many different ways to extend its capabilities.
Even though it seems like computing has been with us forever, it’s still really very early days. This technology is still quite new. We’re only just beginning to understand how to use it. I see the Evernote saga, and the concept of an external brain as part of that ongoing learning process.
It might be helpful to set the whole matter of external brains and extended minds in a wider context of literate and non-literate cultures.
Literate cultures tend to absorb many extended mind capabilities, such as memory, into writing. For example, How many poems or songs do you know by heart? Probably not many. What’s the point these days of learning things by heart? Why remember poems when you can just read them from a book? Literacy appears obviously superior to memory, even though something is lost along the way. What gets lost is the older, mnemonic culture of pre-literate societies. This loss in the transition from speaking to writing is what Plato’s Socrates warned of. Most literate people, though, neither mourn the loss nor even really notice it. The promise of writing is that if you could just get it all down you’ll have captured it, tamed it and mastered it. This is a familiar quest, from Adler’s Syntopicon1 to Otlet’s Mundaneum2, even to Allen’s “Getting Things Done”3. But somehow, the completion of the Writing Task, always eludes us. It’s too big. There’s simply too much to know and there has been for some time.
But oral cultures live in an enchanted world, not necessarily in a magical sense, but in the sense that the whole environment ‘speaks’, as part of a wider extended mind. Geographical features are not merely ‘dead matter’. They’re alive to tell stories which recount histories and genealogies, to give blessings and warnings. Plants and animals are similarly endowed with a depth of meaning.
This is the world that literate culture has exiled itself from, so that it barely comprehends its existence, much less its significance.
But this living world remains available to us. The exile is self-imposed. In her book, The Extended Mind, Annie Murphy Paul says:
“We extend beyond our limits, not by revving our brains like a machine or bulking them up like a muscle — but by strewing our world with rich materials, and by weaving them into our thoughts.”
We can’t master knowledge. It’s what we live in. This requires a radical shift of worldview from colonialist to ecological. The colonial approach to knowledge is to capture it in order to profit from it. The ecological approach is to live within it as within a garden to be tended. The two worldviews may well be mutually incompatible, though this matter is hardly resolved yet.
This saga isn’t over.
Further reading:
Annie Murphy Paul, The Extended Mind. The power of thinking outside the brain.
Margo Neale and Lynne Kelly, Songlines: The Power and Promise.Thames and Hudson.
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Walter Benjamin on the obsolete book
“Already today, as the current scientific mode of production teaches, the book is already an obsolete mediation between two different card file systems. For everything essential is found in the index box of the researcher who wrote it, and the scholar who studies it assimilates it in his own card file.”
“Und heute schon ist das Buch, wie die aktuelle wissenschaftliche Produktionsweise lehrt, eine veraltete Vermittlung zwischen zwei verschiedenen Kartotheksystemen. Denn alles Wesentliche findet sich im Zettelkasten des Forschers, der’s verfaßte, und der Gelehrte, der darin studiert, assimiliert es seiner eigenen Kartothek."
Walter Benjamin - Attested Auditor of Books, in One Way Street (1928) 💬
Comment
Was the book really already obsolete in 1928, as the German cultural theorist Walter Benjamin claimed?
If so, it has nevertheless enjoyed a long and distinguished afterlife. And Benjamin’s sly reference to what ‘the current scientific mode of production’ teaches, may suggest a certain irony in his claim.
But the real irony is that the card index was sooner for obsolescence than the book. During the 1980s and accelerating into the 1990s millions of index cards were thrown out, to be replaced with computer databases. Despite a very niche resurgence of interest in the quaint technologies of the ‘Zettelkasten’ (German for ‘index card box’, there’s no real sign of a come-back. The book, meanwhile, has been assailed mightily by the e-book, but as Monty Python fans would say: “It’s just a flesh wound”.
However, another way of viewing this technological transition would be to say that the card index, in the new form of the electronic database, has utterly triumphed. Now everything is just the front-end of a database, including books.

References
Benjamin, W. (2016[1986]) One Way Street, Trans. E. Jephcott. Cambridge, MA: Harvard University Press. P. 43.
Source: www.heise.de/tp/featur…
Cited in Stop Taking Regular Notes; Use a Zettelkasten Instead - Hacker News
See also: Researching Benjamin Researching
Hermann Burger - Serious about a Zettelkasten?

The Swiss writer Hermann Burger (1942–1989) wrote the draft of a novel in 1970 called Lokalbericht (1970) [Local Report].
“‘Local Report’ – I already have the title, the hardest part of a book. Now, I’m just missing the novel.” [“Lokalbericht – den Titel, das Schwierigste an einem Buch, habe ich schon. Fehlt mir nur noch der Roman."]
The story’s narrator was right. Burger was a poet and novelist but he never finished this early novel. He died in 1989 and it wasn’t published until October 2016. I found a single English-language review.
The protagonist of Lokalbericht, the young teacher Günter Frischknecht1 is in the canton of Ticino trying to write two pieces of work at the same time, a dissertation and a novel, writing on two different typewriters and using two different Zettelkästen. These two card indices get mixed up and the slips intermingle. What to do in this situation? Reality and fiction apparently can no longer be distinguished.
This farcical Zettelkasten confusion is foreshadowed early on in the novel by Frishknecht’s academic supervisor Professor Kleinert, of whom he says:
“He didn’t believe I could actually be serious about a Zettelkasten.” [“Dass ich tatsächlich Ernst machen könnte mit einem Zettelkasten, hat er mir wohl kaum zugetraut."]
This story-line seems to be consistent with a long-standing trope among scholars that the loose slips of paper with which they ordered their work could at any moment get mixed up, or even worse, blow away, resulting in chaotic disorder.
Well, now it’s all been put back together. There’s a very impressive interactive online version of the novel, and in 2017 there was an exhibition centred upon it at the Aarau Museum.
It was Manfred Kuhn’s wonderful, though sadly defunct, blog Taking Note Now that originally alerted me to this novel and the Zettelkasten mix-up, but I had completely forgotten.
Thoughts are nest-eggs - Thoreau on writing
In October 1837 the writer Ralph Waldo Emerson prompted the twenty-year-old Henry David Thoreau to start writing a journal.
“‘What are you doing now?’ he asked. ‘Do you keep a journal?’ So I make my first entry to-day.”
Thoreau finished up with fourteen full notebooks: seven thousand pages, and two million words. Small fragments can add up to an awful lot. From these fragments he constructed pretty much all of his completed works. What began as jottings ended up as mature reflections.
He claimed his disconnected thoughts provoked others, so that ‘thought begat thought’.
Thoreau wrote in his journal:
“To set down such choice experiences that my own writings may inspire me – and at least I may make wholes of parts.
Certainly it is a distinct profession to rescue from oblivion and to fix the sentiments and thoughts which visit all men more or less generally. That the contemplation of the unfinished picture may suggest its harmonious completion. Associate reverently, and as much as you can with your loftiest thoughts. Each thought that is welcomed and recorded is a nest egg – by the side of which more will be laid. Thoughts accidentally thrown together become a frame – in which more may be developed and exhibited. Perhaps this is the main value of a habit of writing – of keeping a journal. That so we remember our best hours – and stimulate ourselves. My thoughts are my company – They have a certain individuality and separate existence – aye personality. Having by chance recorded a few disconnected thoughts and then brought them into juxtaposition – they suggest a whole new field in which it was possible to labor and to think. Thought begat thought.” – Henry David Thoreau, The Journal, January 22, 1852.
The writer, according to Thoreau, doesn’t have a privileged position in relation to ideas or experiences. Everyone has the same access to their “sentiments and thoughts.” But the writer’s special task is to record them.
Thoreau’s meticulous editing process moved from raw field notes, to his journal, to lectures, to essays, and from there to published books. Walden, for example, was published after seven drafts, which took the author nine years to complete.
“The thoughtfulness and quality of his journal writings enabled him to reuse entire passages from it in his lectures and published writings. In his early years, Thoreau would literally cut out pages or excerpts from the journal and paste them onto another page as he created his essays.” - Thoreau’s Writing - The Walden Woods Project
This pretty much sums up the Zettelkasten approach to note-making for me. Thoreau lays out a simple process for “fixing” one’s thoughts in writing and for making something of them.
Note that the thoughts don’t necessarily follow on from one another. The very next idea Thoreau noted in his journal is on a completely different subject: the colour of the winter sun not long before dusk.
Someone who has found their own distinctive approach to writing that seems to echo that of Thoreau is Visakan Veerasamy. He lives in the 21st Century, not the Nineteenth, and instead of a cabin in the woods he probably has a laptop in a cafe. Instead of field notes he writes using tweets and threads, which he then links together in a dense network of thought.
“I’ve basically taught myself to manage my ADHD with notes and threads."- Visakan Veerasamy
What calls Visakan to mind as I reflect on Thoreau’s writing practice is the sense they both seem to share of the seriousness of the practice of making something from nothing by writing short notes in a journal. Visakan says something of which I’m sure both Thoreau and Emerson would have approved:
in a way journaling for yourself is a radical act! It’s an act of self-ownership, self-education. It’s about setting your own curriculum, defining your own worldview, deciding for yourself what is important. I don’t think this should be outsourced to others.
People tend to think of writers like Thoreau as immensely successful. True he became a popular speaker, but Thoreau was not a successful writer, at least not in his lifetime.
“A Week on the Concord and Merrimack Rivers [1849] was initially an abysmal failure. Henry was forced to take back the books that were not sold, totalling 706 out of the 1,000 originally printed. Writing humorously of the event in his journal, he quipped, “I have now a library of nearly nine hundred volumes, over seven hundred of which I wrote myself” (Thoreau 459). Walden [1854], in contrast, was a relatively successful book, though it took most of the rest of Thoreau’s life to sell the 2,000 books of the first edition.” – Thoreau’s Writing - The Walden Woods Project
This knowledge inspires me to write without too much concern for the outcome, and to focus instead on those aspects of the process that lie within my control - recording my thoughts and like Thoreau turning them into nest eggs.
References:
Thoreau, Henry David. 2009. The Journal, 1837-1861. Edited by Damion Searls. New York: New York Review Books.
Image of Thoreau suitable for use on currency

How to be interested in everything

Thomas Edison claimed he was interested in everything
“One day while Mr. Edison and I were calling on Luther Burbank in California, he asked us to register in his guest book. The book had a column for signature, another for home address, another for occupation and a final one entitled ‘Interested in’. Mr. Edison signed in a few quick but unhurried motions… In the final column he wrote without an instant’s hesitation: ‘Everything'”. - Henry Ford on Thomas Edison. Quoted by John Naughton
It’s all very well to believe that everything interests you, but what does that mean in practice?
If you really were interested in everything, how would you get anything done? Each new thing you encountered would surely distract you from your previous interest, and you’d end up surrounded by a heap of unfinished projects. But Thomas Edison, the prolific inventor, had a heap of finished projects - innovative products ready for the market and ready to transform society. More than 1000 US patents were filed under his name, including some of the greatest inventions of all time.
But when nothing prevents you from chasing a new interest, how do you stay focused for long enough to complete the work in front of you?
You need a system
What was Thomas Edison’s system for staying on track? He was clearly very effective, so he must have been able to harness his many diverse interests to produce outcomes. How did he do it? How did he avoid ‘shiny object syndrome’?
Edison recorded everything meticulously. He used notebooks and legers extensively and he encouraged his laboratory workers to do the same. The resulting mountain of notes is a treasure trove for understanding where Edison’s ideas came from and how they developed over time. In their day, these records were mainly used to ensure patents could be registered and defended. Now though, up to five million pages of Edison’s massive work can be studied online through the Edison Project at Rutgers University.
For individuals today, without a team of engineers behind them, but with the amazing advantage of Twenty-first century technology, being interested in everything is a great opportunity, if only we can harness it. Then like Edison, we can happily admit that we’re interested in everything, and put our diverse interests to work.
Publish small fragments to create a larger whole
According to Cory Doctorow, the prolific author and tech activist, blogging (or whatever you want to call it this week) allows you to write simple fragments each day about what interests you today, and to publish it, quite without friction. Over time, Doctorow attests, these small fragments coalesce, and begin to add up to something more substantial.
the traditional relationship between research and writing is reversed. Traditionally, a writer identifies a subject of interest and researches it, then writes about it. In the (my) blogging method, the writer blogs about everything that seems interesting, until a subject gels out of all of those disparate, short pieces.
Blogging isn’t just a way to organize your research — it’s a way to do research for a book or essay or story or speech you don’t even know you want to write yet. It’s a way to discover what your future books and essays and stories and speeches will be about.
Mattias Ott has more to say about this process, and if you read German, there’s even more.
It’s still just up to you
You might well be interested in everything, but the bottleneck all your interests must pass through is you. The measure of your note-taking and writing system is the extent to which it helps you make sense of your diverse interests in a way that communicates meaningfully to yourself and/or to others. Publishing small fragments as you go, which then add up to larger pieces is a way forward that just wasn’t possible in Edison’s day, but is easily available online now to anyone who wants to pursue it.
The lost index cards of Harold Innis
Chris Aldridge has discovered yet another writer who used index cards to construct an extensive body of work from smaller pieces. This practice is often referred to as keeping a Zettelkasten, whether or not the owner was actually German.
The Idea File of Harold Adams Innis (University of Toronto Press, 1980) reproduces an edited version of the typescript Innis, an economic historian, made of his original index cards.
Chris wonders if the index cards themselves might be re-issued for interested readers.
While I appreciate the published book nature of the work, it would be quite something to have it excerpted back down to index card form as a piece of material culture to purchase and play around with. Perhaps something in honor of the coming 75th anniversary of his passing?
I guess such a work might look something like the 138-index-card edition of Nabokov’s unfinished novel, The Original of Laura, which Chip Kidd designed; or his dream diary, constructed from 118 index cards and published with some images of the original notes as Insomniac Dreams.
Sadly, a new edition such as this seems unlikely. That’s because according to the Introduction of the Idea File, Innis himself had around 1,500 of his index cards transcribed to 339 typed and numbered sheets of paper. And the cards themselves were lost, it seems, so I’m not holding my breath. However, it’s always possible that some interpid researcher might investigate the archives1 and discover them hidden away there one day. Stranger things have happened.
“The early history of the material that came to be called the Idea File is obscure. Innis’s son, Donald, recalls that his father used to keep notes on card files, and that there were, at one point, about eighteen inches of white cards, with another five or so inches of white cards containing an index. This index, according to Donald Innis constituted ‘a cross referencing system so that one idea might be referred to under several headings and vice-versa’. These cards appear to have been in manuscript. However, at some point or points, Innis had these notes typed on sheets of paper, and near the end of his life collected the typed notes into one collation which he numbered consequently from 1 to 339.
The cards themselves appear to be lost. It is possible that they still existed at Innis’s death, for there is a second typed version of part of the Idea File. What might have happened is that in the process of preparing Innis’s posthumous material for limited circulation, a typist began working from the cards; then, during the typing, the family discovered the typed version and stopped the retyping.”
I’ve gleaned a few ideas from all this.
First, cross-referencing matters. Innes kept a very extensive index to his cards: 5 inches of index to 18 inches of actual notes. This means his ideas were probably extensively cross-referenced. Makes me think no amount of cross-referencing is too much, if you feel like doing it. But also: don’t get obsessive. Life’s too short to cross-reference everything.
Second, I’m wondering about longevity of work. It really seems like the original notes on index cards were lost. This is such an interesting feature of the resurgence of interest in the working methods of writers and scholars. Is the ‘finished product’ - book or article - really more important and permanent than the supposedly transient and disposable noted from which it was created? And what happens to the ‘Nachlass’ in the age of digitization? Is it both eternal and wipeable at the same time?
Third, the meaning is in the links, but the links are fragile. Given the interlinking of the original notes and their subsequent disappearance, it’s fairly clear that the published ‘idea file’ has lost a significant part of its meaning, since that meaning resides in the links between ideas, not just in the ideas themselves.
Fourth, I noticed that Innis’s notes were often very short. Sometimes just a sentence or two, with compressed, abbreviated syntax. It reminds me of Lichtenberg’s aphorisms, many of which fall slightly flat as prose. Here’s an example. I just wonder what it used to link to:
“University presidents giving each other degrees. A university not an institution designed to that end, or to give members of boards of governers degrees.”
I really appreciate looking into the working practices of writers like this. No doubt there are many more such examples to be found and explored.
I read the top ten Zettelkasten posts on Hacker News so you can do something more wholesome with your day
I really did read a lot of geeky Zettelkasten posts and now I’m going to share them with you
Every so often someone on Hacker News mentions Zettelkasten, a method of making longer work from simple, connected notes. An interesting conversation usually follows. Several of these posts have reached the front page of the Hacker News site, making their authors ‘HN famous’, which is the geek’s version of blowing up on TikTok. The top Zettelkasten post there has around 300 comments, while the 10th has 31.
It’s worth staying a little sceptical about whether visibility on Hacker News is a good proxy for competence. But the comments are usually interesting and often helpful. So here’s a countdown of the top Zettelkasten posts, from 10 to 1. And here, top simply means ‘most commented upon’. For your reference, I’ve noted whether each article is introductory/basic, intermediate/involved, or advanced/complex.
And I’d be interested to know what your favourite Zettelkasten article or resource is - there are a lot to choose from. Or else feel free to tell me exactly why you think this is all a daft waste of time.
So now…
The Zettelkasten article top ten countdown
10. Zettelkasten, linking your thinking, and Nick Milo’s search for ground
Bob Doto, presents a constructive comparison of two different approaches to note-making. The Zettelkasten method, and Nick Milo’s ‘Linking Your Thinking’ (LYT) may appear similar, but as this article points out, they’re really quite different:
“The things that differentiate zettelkasten from LYT are the very things that make each system truly work.”
Bob has some additional articles about the Zettelkasten approach, which are highly recommend.
Complex
Principles
Comparison
9. Org-roam-UI – graphical front end for exploring your org-roam Zettelkasten
Org-Roam is a plain text knowledge management system based on Emacs Org-mode. This post provides an add-on visual interface that shows a map of your notes, similar to other tools such as Roam, Obsidian and Logseq. The tool is “a frontend for exploring and interacting with your org-roam notes.” If you use Org-mode and think you might need this, read on.
Complex
Tools
Github Repo
8. The Zettelkasten Method (2019)
Abram Demski of lesswrong.com goes to town on explaining the evolution of his paper-based Zettelkasten system. He uses 3x5 inch index cards, but he also tried Workflowy and has nice things to say about it. There’s a follow-up at the end, in which the author says he now uses notebooks, but still finds the Zettelkasten referencing system very useful. Along the way he offers one of my favourite principles: “small pieces of paper are just modular large pieces of paper”. This particular article also one of Abram’s top posts on lesswrong.com
Complex
Manual
Principles
Tools
Examples
(Yes, this article covers a lot)
7. My Second Brain – Zettelkasten
Web developer Scott Spence writes about the tools he has been using for notetaking: GitHub, Notion, RoamResearch, Obsidian, Foam. There’s a helpful warning at the top of the article that since it’s three years old the technical details may be out of date. This post is for lovers of digital tools!
Involved
Tools
6. Luhmann’s Zettelkasten
An article from a small German software company about Niklas Luhmann and the structure of his notes. Warning: the description here of how Luhmann connected notes through consecutive numbering (Folgezettel) seems a little simplistic. And TBH I’m not sure how useful this article really is, but the authors do seem to have succeeded with the HN popularity contest.
Basic
Article
5. Introduction to the Zettelkasten Method
A very full introduction to the Zettelkasten method, by Sascha Fast of zettelkasten.de. It’s a great introduction, which also goes into useful depth. If you’ve already been building your Zettelkasten for a while, it’s worth coming back to this to see what you can pick up now you’ve got a real example to play with. These guys also have an app (the Archive) and a great forum, but if you’re reading this you probably already know that.
Involved
Manual
Examples
4. Zettelkästen?
Brian Kam (of Interintellect) writes a simple summary of the Zettelkasten approach, with a follow-up post two years later, by which time he was no longer a beginner since he’d written (drum roll…) 6,837 notes. He implements his Zettelkasten with a Git-based wiki.
Basic
Principles
3. A tour to my Zettelkasten note clusters
Involved
Example
Tech writer Mingyang Li describes his Zettelkasten categories in Obsidian. There are categories like ‘Journal’, ‘chat with people’ and ‘distinguishing-between’. It’s quite useful to see how one person benefits from specific clusters of notes.
2. Zettelkasten note-taking in 10 minutes
Basic
How-to
GitLab software engineer Tomas Vik runs through the slip-box method, based on Sönke Ahrens’s book, How to Take Smart Notes. He recommends creating individual plain text (markdown) files and gives clear examples of how this is structured. He used Zettlr as his markdown-enabled text editor of choice, but mentions alternative apps that do similar things. As a bonus, there’s a follow-up post a year later, in which the author describes how his process has changed (not much) and why he now uses Logseq instead of Zettlr.
1. Stop Taking Regular Notes; Use a Zettelkasten Instead
Basic
How-to
Amazon data scientist Eugene Yan wins the HN Zettelkasten popularity prize with his post on how he implements the system in Roam. Well, it has attracted the most comments anyway. It’s a useful introduction, and commenters mention other apps such as TiddlyWiki, Obsidian and Workflowy. The author seems to have moved on, and started using Obsidian in 2023.
Reflections
Well done If you’ve read this far you are clearly my kind of person. Though you’ve probably noticed that these aren’t necessarily the very best articles about the Zettelkasten method. In any case, everyone differs on what that would even mean. But if you want to gain an understanding of this particular approach to note-making and writing, most of these articles are well worth reading. And if this was all you had available you’d certainly be able to make a good start.
I was interested to discover that quite a few technically-competent people are interested in the Zettelkasten, and are even using one, and was mildly amused to see how keen some seem to be on their many and various digital tools.
I found the follow-up posts, where they existed, the most useful, because they showed how the authors' methods had evolved over time, with actual Zettelkasten use. This is much better than the kind of breathless article that says, basically: “I heard about this Zettelkasten word two days ago and now I’m up against a deadline to post something, anything.” The HN comments are worth skimming too, not least because there are a some sensible criticisms of this system and plenty of alternative suggestions.
To be honest, though, I’ve found the commentary on Reddit and at the zettelkasten.de forum to be generally of a higher quality. This is probably because the participants there are all already Zettelkasten-curious.
Thanks to a post by @chrisaldrich I was finally prompted to write about Aby Warburg’s Zettelkasten and library.
Aby Warburg's Zettelkasten and the search for interconnection writingslowly.com
Aby Warburg's Zettelkasten and the search for interconnection
Aby Warburg and the compulsion to interconnect
Aby Warburg was a German art historian obsessed with the connections he saw across European and Mediterranean culture in the afterlife of Antiquity. He even coined a phrase: Verknüpfungszwang - the compulsion to find connections.
“Coining a word that is as fitting as it is symptomatic of the urge it describes, [Aby] Warburg spoke of his Verknüpfungszwang. This ‘compulsion to interconnect’ lies not only at the root of his research and working methods. It is also manifested in regular references within his work to events in his private life, his family and collaborators.” - The Warburg Institute
Three projects in particular display Warburg’s extraordinary scholarly methods.
“The library, panels and boxes formed the ensemble of supports on which Aby Warburg’s spiritual work and intellectual creativity were based.” - Benjamin Steiner, Aby Warburgs Zettelkasten Nr. 2 “Geschichtsauffassung”, In: Heike Gfrereis / Ellen Strittmatter (Hrsg.): Zettelkästen. Maschinen der Phantasie (Marbacher Kataloge, 66). Marbach 2013, S. 154-161.
Taken together, these three amount to a technology for exploring Warburg’s obsession with interconnection.

Image source: Helix Center Warburg Symposium
The Zettelkasten as a thread through the labyrinth of thought
The first technology of note is Warburg’s Zettelkasten, his collection of index boxes, containing notes on many subjects.
“Aby Warburg’s collection of index cards (III.2.1.ZK), containing notes, bibliographical references, printed material and letters, was compiled throughout the scholar’s life. Ninety-six boxes survive, each containing between 200 and 800 individually numbered index cards. Cardboard dividers and envelopes group these index cards into thematic sections. The online catalogue reproduces the structure of the dividers and sub-dividers with their original titles in German and consists of about 3,200 items.” - Warburg Institute Archive
“…Warburg apparently worked constantly with these boxes, and, as his first biographer Carl Georg Heise has reported, he often stood with a strained facial expression bent over the mass of papers and arranged and shifted the individual cards in a long-lasting and never-ending process of order. “Those who follow Warburg’s note box follow his train of thought; from the banking system in Florence, the medieval trading company, the development of individuality, the restless professional work of the Calvinists and the Reformed form of asceticism, to Warburg’s own origin from the old Jewish banking family. The slip box is Warburg’s Ariadne’s thread through his labyrinthine library like his labyrinthine thinking: from the werewolf to the historical concept. A thought, an idea or a new concept does not emerge in a linear progression, but in a process of reciprocating units of ideas and cross-references, which continues until new intersections and nodes have formed.” - Benjamin Steiner, Aby Warburgs Zettelkasten Nr. 2 “Geschichtsauffassung”, In: Heike Gfrereis / Ellen Strittmatter (Hrsg.): Zettelkästen. Maschinen der Phantasie (Marbacher Kataloge, 66). Marbach 2013, S. 154-161.
According to Fritz Saxl, Warburg’s assistant and collaborator, “this vast card-index had a special quality… they had become part of his system and scholarly existence”.
“Often one saw Warburg standing tired and distressed bent over his boxes with a packet of index cards, trying to find for each one the best place within the system; it looked like a waste of energy. […] It took some time to realise that his aim was not bibliographical. This was his method of defining the limits and contents of his scholarly world and the experience gained here became decisive in selecting books for the Library.” - Fritz Saxl, The History of Warburg’s Library (1943-44, p. 329), quoted in Mnemonics, Mneme And Mnemosyne. Aby Warburg’s Theory Of Memory, Claudia Wedepohl (p.389).
A library of good neighbours
Second of note, and much larger than the card-index, is Warburg’s library. As the oldest son, Aby Warburg was in line to inherit his family’s seriously wealthy banking business. But his lack of interest in finance led him to offer the business to his younger brother Max, on the condition he could purchase any books he needed for his research into his true interest, art history. It may have seemed like a modest request, but Warburg’s book collection grew ever larger and eventually expanded into a significant research library. This library was organised like no other. The shelves, and eventually whole rooms were arranged to enable serendipitous connections across and between categories.
“the book you need might not necessarily be the one you were looking for. It might, in fact, be the one next to it. The books are shelved around the law of the good neighbour, meaning that the library’s collection is organised thematically instead of by author, title, or publication date. Gertrud Bing, an architect of the classification system and director of the Institute when it moved to London, said that ‘the manner of shelving the books is meant to impact certain suggestions to the reader who, looking on the shelves for one book, is attracted by the kindred ones next to it, glances at the sections above and below, and finds himself involved in a new trend of thought which may lend additional interest to the one he was pursuing’. Although the Warburg’s serendipitous system may initially seem unconventional and somewhat esoteric, the structuring of the library’s collection around the law of the good neighbour means that it is much easier for readers to discover and find texts they didn’t even know they needed within the interconnected, interdisciplinary classmarks. For Warburg, every book was useful in the context of the whole collection.”
…“the arrangement of the books at the Kulturwissenschaftliche Bibliothek Warburg, the first Warburg library in Hamburg, was intended to encourage rather than obstruct discoveries. Whenever Warburg, an avid book collector, took receipt of one of his many deliveries of new acquisitions, he would rearrange the shelves to accommodate each new book into the collection. In this way, his theories on the interrelation of various images, literary motifs and disciplines found physical form in the arrangement of the books on the shelves. Bing remarked that ‘Warburg had chosen and arranged the books like stones from a mosaic of which he had the pattern in his mind’. They were collected for research into specific areas, under a general theme of the afterlife of antiquity.” Source: The Warburg Institute
An Atlas of Images
The third technology for making connections was Warburg’s visual Memosyne Atlas, intended to demonstrate in a series of large panels the lines of connection between artistic motifs in varying periods and locations.
“Warburg believed that these symbolic images, when juxtaposed and then placed in sequence, could foster immediate, synoptic insights into the afterlife of pathos-charged images depicting what he dubbed “bewegtes Leben” (life in motion or animated life).” - ZKM Center for Art and Media
Warburg’s institutional legacy
These three enterprises, card index, library and atlas, are today combined into the Warburg Institute, which began life in Hamburg and since 1944 has been in London.
Above the front door of the Institute is inscribed the Greek word MEMOSYNE. Warburg saw this not straightforwardly as the name of the goddess of memory, but as a sphynx presenting a great riddle. The Institute revolves around memory as a problem. What is memory? How does it persist in culture and individuals, and especially through art?
“In the first public occurrence of the word “Mnemosyne” I am aware of in his writings, found in the annual report on the Library for the year 1925, Warburg identifies Mnemosyne not as the goddess of Memory and mother of the Muses but rather as “the great Sphynx,” out of whom he hopes “to unlock, if not her secret, at least the formulation of her riddle [der grossen Sphynx Mnemosyne, wenn auch nicht ihr Geheimnis, so doch die Formulierung ihrer Rätselfrage zu entlocken]”” – Davide Stimilli, «Aby Warburg’s Impresa», Images Re-vues (En ligne), Hors-série 4, 2013.
Arguably, Warburg’s self-diagnosed Verknüpfungszwang, his ‘compulsion to interconnect’ hindered the completion and publication of his work. Perhaps his constant sorting and re-sorting represented a kind of perfectionism, or even a form of obsessive-compulsive behaviour. Indeed, he spent several years battling significant mental health problems and the end published comparatively little.
However, in another sense, through his Zettelkasten, his library and his atlas of images, the compulsion to interconnect became Warburg’s life’s work. It is telling that though Warburg left relatively few completed texts, his institutional legacy, especially through London’s Warburg Institute and Hamburg’s Warburg-Haus, has proved extremely influential and highly intellectually fertile over many decades - and continues strongly into the Twenty-first Century.
In his novel The White Castle (1998), Orhan Pamuk’s narrator says: “I suppose that to see everything as connected with everything else is the addiction of our time.” The life and legacy of Aby Warburg, shows that this doesn’t have to be a pointless pursuit of arbitrary links but can generate lasting knowledge and meaning with wide implications.
Further reading and viewing:
Chernow, Ron (1993). The Warburgs: The Twentieth Century Odyssey of a Remarkable Jewish Family. New York: Random House. ISBN 978-0525431831.
The Warburg Institute Library: A Brief Description
Introduction to the Warburg Institute Library and Collections - description of Warburg’s Zettelkasten at 8:36
Aby Warburg: Metamorphosis and Memory - and Chris Aldridge’s online notes on this documentary (which is how I discovered it).
📷 🗂️🗃️Micro.blog March photo challenge, day 19: “analogue”
