https://forum.zettelkasten.de/discussion/2671/how-big-is-a-single-idea-in-a-literature-note

https://www.ebay.com/itm/155778259293

Unbranded four drawer 2x2 desktop card index in oak. See on 2023-09-24 offered for $124.99 plus $92.53 shipping from Hobart, IN. Overall 12" H x 15" W x 15" D, so likely for 4 x 6" cards though the listing says "The inside of the drawers are 3 inches deep, 6 inches wide, and 13 inches long."

Medium condition.

Cost per drawer: $31.25

I have run across Jeff Shelton's Analog system (originally via Kickstarter) before. Thanks for the reminder.

There's also a slew of others, especially for folks looking at commercially preprinted cards (though I tend to think they're overpriced compared to blank cards): - The Hipster PDA (Parietal Disgorgement Aid) https://web.archive.org/web/20040906150523/https://merlin.blogs.com/43folders/2004/09/introducing_the.html - Pile of Index Cards (PoIC) https://www.flickr.com/photos/hawkexpress/albums/72157594200490122/ - Levenger https://www.levenger.com/products/triple-decker-pocket-planner?variant=42485422424213 (among others they carry including pocket briefcases) - Notsu https://notsubrand.com/ - Baronfig / Strategist: https://baronfig.com/products/strategist?variant=39787199529043 - Jeff Shelton's Analog system https://ugmonk.com/ - 3x5 Life https://www.3x5life.com/ - Foglietto https://www.nerosnotes.co.uk/collections/foglietto

Am I missing any significant or influential examples, particularly branded ones?

Hubnote for 3 x 5" index cards for productivity

https://notsubrand.com/

Notsu has a variety of 3 x 5" index card products for productivity and planning.

https://thoughtcatalog.com/ryan-holiday/2013/12/the-notecard-system-the-key-for-remembering-organizing-and-using-everything-you-read/

This was the original post which Holiday copied to his own site at: https://ryanholiday.net/the-notecard-system-the-key-for-remembering-organizing-and-using-everything-you-read/

Cross reference notes there.

Zajímavý, jednoduchý způsob jak psát kartičky s poznámkami z četby.

Love the framing of the index as a "thematic entrance" into the Zettekasten

etymology?

from card as in card catalogue? thus dis-card or un-card, remove a card and throw it away?

apparently attested in the 16th century from card games...

late 16th century (originally in the sense ‘reject (a playing card’)): from dis- (expressing removal) + the noun card

though one should keep in mind that playing cards were also used as early index cards for their small functionality

a second use of "mental card catalogue", though somehow he doesn't seem to realize the inherent value for building knowledge... ?

Are we stretching too far by saying that AI are currently emergent? Isn't this like saying that card indexes of the early 20th century are computers. In reality they were data storage and the "computing" took place when humans did the actual data processing/thinking to come up with new results.

Emergence would seem to actually be the point which comes about when the AI takes its own output and continues processing (successfully) on it.

So we'll expect the notebook to be recommended over the index card?

"index card" doesn't appear in the text

I've been using a mixture of methods focused around 4 x 6" index cards for a while after having previously done a traditional bullet journal, Day-Timer, etc. and attempting to something similar in a variety of digital contexts including TiddlyWiki, Obsidian, Logseq, etc. (More details/discussion: https://www.reddit.com/r/bulletjournal/comments/15av66m/a_year_of_bullet_journaling_on_index_cards/) Somehow paper always seems to win out for the tactile nature and the decreased probability of things going lost (being out of sight and thus out of mind which happens for me in digital), or dealing with a never-ending list of overwhelming pop up reminders.

I've written a bit about the history of some of these methods, which includes links to some of the bigger examples of each if it helps to see some variety about what each system suggests or photos of them at work. One of the oldest methods from which most of the rest seem to stem is the Memindex from circa 1903.

My current go-to is a Memindex/bullet journal method adapted to index cards rather than a notebook. I've got a card every day for events and to do lists as well as cards for "Future", planned purchases/groceries, etc. I keep a top level card with short lists of what I want to read, watch, listen to, and learn. I also keep a sectioned Eisenhower matrix group of cards for the areas: crisis, productivity, distraction, and low priority. I also have a Projects section with descriptions and lists for each and based on priorities, I'll take individual steps from the project cards and place them onto my daily cards as I go.

Some of the bigger projects may have a top level card followed by cards which breakdown or outline parts of larger processes. I can then lay them out on a table (Gantt chart style) to determine dependencies and create a pseudo schedule. When I'm done, I'll clip them all together in the most appropriate order and number them. As necessary, I'll take some of these cards out and "schedule" them for individual days by placing them behind or attaching them to the appropriate daily cards with a paper clip. (If you do this, make sure the project name and a potential order number designator is on them, so that you can refile them with the project as necessary.)

The key is doing weekly and bigger monthly or quarterly reviews of all the major cards and moving/scheduling what you need to do from either old cards or project cards each week. Going through my entire collection of immediate cards is usually incredibly fast. When I'm done with cards, they get archived away in my card index for future consultation if necessary. I'm also usually making further notes on the cards as I go and cross indexing them, so that if I don't have the notes for a particular project in the project section, it's being written on the individual daily cards; at the end of the week I'll update the project cards and write down the dates of those notes into the project file so that if I need them later they're available (but importantly I don't have to copy over all the notes). After doing this it's usually pretty easy to work on planning the next steps for the coming week/month.

For lower priority projects and to do items, if things sit around too long undone they slowly move down the priority list from crisis to low priority or they slowly move to the back of my projects section where they get reviewed less often.

For those who prefer some visualization, here are two photos which may help in terms of the physical arrangement I'm using: - https://boffosocko.com/wp-content/uploads/2023/09/wp-1693596706707-scaled.jpg (alt text: Display of two columns of index cards with only the titles on each showing. Column one: Planning Daily, Planning Weekly, Weeks 31-35 August 2023, Sept 02 2023, September 03 2023, Crisis: Urgent/Important, Productivity: Not Urgent/Important, Low Priority: Not Urgent/Not Important, Distraction: Urgent/Not Important, Someday. The second column: Project Priorities Spring 2023, Reading Priorities, Writing Priorities, Learning Priorities, Listening Priorities, Watching Priorities, Purchases Planning, Groceries.) - https://boffosocko.com/wp-content/uploads/2023/09/wp-16935967219588251569559254031730-scaled.jpg (alt text: My card index for productivity featuring sections for an Eisenhower Matrix, Projects, and tabs for the upcoming 12 months and 31 days in the current month.)

On a day-to-day basis, I keep most of it in an Acrimet card file on my desk, though the longer term storage is in a nearby Singer Card File Cabinet. (I'll often have a full drawer removed from the big cabinet on my desk while I'm working on a particular section.) While travelling about, I store the most important daily use cards in a King Jim Flatty Works case which is about the size of a small notebook or which fits easily into my shoulder bag. If you're all-in on index cards and you need ideas for storage, I've been compiling a relatively comprehensive list of index card storage options.

Having done notebooks and other paper-based planners (Hobonichi) before, I appreciate that the cards are easily moveable and re-orderable, I don't waste any paper or space if I miss days, I'm not as precious about screwing up a new notebook, and I don't have to carry either multiple notebooks, or worry about recopying project pages from one notebook to the next when I'm done. I also don't have to worry about losing large parts of my planning if I lose a whole notebook. It's always easy to have today's card on me at all times or to take small sections on the road as needed. Additionally cards are very cheap. If you're of the sort of camp that having pre-laid out stationery with finer stock, perhaps try Notsu who pre-prints a variety of productivity cards, though only in 3 x 5 inch sizes. There are a few other smaller companies who still do this, but they tend toward the more expensive side.

There are many ways to do variations on these, so take a look at some examples of how others use them and then attempt to evolve a practice which works for you. For example, if having an Eisenhower Matrix section doesn't make sense to you, then drop that part and adopt what does work instead.

For those who are deep into this sort of rabbit hole, I'll also mention that I keep a separate zettelkasten "department" within my collection for notes related to reading/research. (I had to fill that massive Singer card index up with something besides extra wine storage.)

Syndication link: https://www.reddit.com/r/gtd/comments/15pfz8o/comment/jypt023/?utm_source=reddit&utm_medium=web2x&context=3

GTD on Paper Index Cards. Experimental Encounters, 2023. https://www.youtube.com/watch?v=vww7JLcrJl4.

https://www.youtube.com/watch?v=vww7JLcrJl4

8:05 - 16:20 GTD - Capture - Clarify - What is it? - Is it actionable? What is the action? - Is it a project? - Batching - Reflect - Review over lists/calendars daily/weekly - Engage

17:30 They use the phrase "atomic" paper based index cards, so they've been infected by the idea of "atomic notes" from somewhere, though it seems as if he's pitching that he's "invented" his card system as if from scratch.

19:45 He mentions potentially using both sides of the card, against the usual (long term) advice.

20:00 Analogizes his cards as ballerinas which work together, but each have their own personalities and function within the ballet

He's using a leather cover for Moleskine pocket notebook and Manufactum A7 index cards, as well as a box

Sections of his box: - to erase - inbox - next actions - projects (3 categories of projects) - someday - to delegate - tickler (by month and by day; 12 months and 31 days) - blank cards

Mentions erasing cards as he finishes them rather than archiving them.

Inspiration by How to Take Smart Notes by Ahrens

Recommends one item per card to make things easier and more actionable; also improves focus versus having a longer list. (28:00)

Portability

Sustainable (he erases)

High quality textile experience

The ability to shift between associative modes and sequential modes seems to work well with such a system.

They distinguish between atomic notes and "stellar" notes. Stellar being longer lists or more dense notes/outlines/etc.

Project cards<br /> titles and project numbers (for reference) Project numbers in the top right with a P and/or M below it for<br /> - P for paper<br /> - M for email data<br /> - D for digital files which helps him find reference materials

Weekly review with all cards out on the table

Expansion pack includes: - action - calendar - waiting

Search was quick and easy, but had to carry his box back and forth to work.

Stopping doing it because he was losing the history (by erasing it). Moving to notebook and he likes fountain pens. He likes the calendar portion in his notebook.

He tried it out for the sake of experiment.

In the paper world things are more present and "in your face" versus digital formats where things can disappear.

https://www.ebay.com/itm/195958563431

A relatively uncommon 5 x 8" index card box from Yawman & Erbe.

Listed for $61.50 on 2023-08-31

https://kingjim.us/flatty-works<br /> Flatty Works A6 size horizontal case<br /> ~$24.00

Acquired green version 2023-04-07<br /> https://boffosocko.com/2023/04/20/review-of-king-jim-a6-size-horizontal-flatty-works-case-5460/

https://www.lochby.com/collections/frontpage/products/venture-pouch<br /> Lochby Venture Pouch<br /> $44.00

Acquired one of these in early 2023 on sale?

several internal sections including for pens. <br /> will easily fit a handful or so of 4 x 6" index cards for quick travel

https://www.rickshawbags.com/travelers-notebook-case#!/graphite/orange-420d-liner/flo-orange/no-mod/no-mod/flo-orange

Rickshaw Bags, Traveler's Notebook Case $59.00

https://www.jetpens.com/Delfonics-Carrying-Bag-M-A5-Dark-Denim/pd/37102

Delfonics Carrying Bag - M (A5) - Dark Denim<br /> $36.00

Perhaps a bit large, but could be used as a mini-portable office to hold a variety of things including 4 x 6" index cards for work on the go.

https://www.jetpens.com/Lihit-Lab-Altna-Carrying-Sleeve-Small-Gray/pd/24824<br /> Lihit Lab Altna Carrying Sleeve - Small - Gray<br /> $30.50

B6 is 4.9 x 6.9 inches, so just slightly larger than 4 x 6 inches

https://www.jetpens.com/Lihit-Lab-Smart-Fit-Carrying-Pouch-A6-Olive/pd/12378

Lihit Lab Smart Fit Carrying Pouch - A6 - Olive<br /> $21.50

https://www.jetpens.com/Delfonics-Carrying-Bag-S-A6-Dark-Blue/pd/38393<br /> Delfonics Carrying Bag - S (A6) - Dark Blue $32.00

https://www.jetpens.com/Kleid-Mesh-Carry-Pouch-Mini-Charcoal/pd/37439

Meant for A6 notebooks, but would likely fit 4 x 6" index cards. $17.00

reply to u/smaczek at https://www.reddit.com/r/notebooks/comments/jjlkh3/hipster_pda_phone_case/

If you or others are still looking, I've been using an A6 Flatty case which easily fits several dozen 4x6" index cards along with my phone and a pen. It's probably a better hand carry (esp. with a pen inside), but will fit into my back pocket. Details:

https://boffosocko.com/2023/04/20/review-of-king-jim-a6-size-horizontal-flatty-works-case-5460/

Alternately, I've looked at Rickshaw Bags' Traveler's Notebook case for this as well: https://www.rickshawbags.com/travelers-notebook-case

For those that do both fiction and non-fiction work in their zettelkasten, do you consider the portion dedicated to fiction a "department" or a "compartment" within it? or perhaps something altogether different?

https://zettelkasten.de/fiction/

The Snowflake Method is more specific, but broadly similar to those who build out plot using index cards.

As examples, see Dustin Lance Black and Benjamin Rowland.

Link to - https://hypothes.is/a/043JIlv5Ee2_eMf1TTV7ig - https://hypothes.is/a/ibFMareUEe2bqSdWdE046g

Ingermanson, Randy. “The Snowflake Method For Designing A Novel.” Advanced Fiction Writing, circa 2013. https://www.advancedfictionwriting.com/articles/snowflake-method/.

Designing writing in ever more specific and increasing levels. Start with a logline, then a paragraph, then acts, etc.

Roughly the advice I've given many over the years based on screenplay development experience, but with a clever name based on the Koch snowflake.

Similarly for an index card-based outline.

see also: https://hypothes.is/a/kdyvykazEe6z3Ruv2sAgqg

Of course spreadsheets are databases of information and one can easily and profitably put all these details into index cards which are just as easy (maybe even easier) to move around

reply to m_t_rv_s__n/ at https://www.reddit.com/r/Zettelkasten/comments/164n6qg/is_this_overkill/

First, your system is historically far more traditional than Luhmann's more specific practice. See: https://boffosocko.com/2022/10/22/the-two-definitions-of-zettelkasten/

If you're taking all the notes/highlights from a particular book and keeping them in a single file, then it may be far quicker and more productive to do some high level tagging on the entire book/file itself and then relying on and using basic text search to find particular passages you might use at a later date.

Spending time reviewing over all of your notes and tagging/indexing them individually may be beneficial for some basic review work. But this should be balanced out with your long term needs. If your area is "sociology", for example, and you tag every single idea related to the topic of sociology with #sociology, then it will cease to have any value you to you when you search for it and find thousands of disconnected notes you will need to sift through. Compare this with Luhmann's ZK which only had a few index entries under "sociology". A better long term productive practice, and one which Luhmann used, is indexing one or two key words when he started in a new area and then "tagging" each new idea in that branch or train of though with links to other neighboring ideas. If you forget a particular note, you can search your index for a keyword and know you'll find that idea you need somewhere nearby. Scanning through the neighborhood of notes you find will provide a useful reminder of what you'd been working on and allow you to continue your work in that space or link new things as appropriate.

If it helps to reframe the long term scaling problem of over-tagging, think of a link from one idea to another as the most specific tag you can put on an idea. To put this important idea into context, if you do a Google search for "tagging" you'll find 240,000,000 results! If you do a search for the entirety of the first sentence in this paragraph, you'll likely only find one very good and very specific result, and the things which are linked to it are going to have tremendous specific value to you by comparison.

Perhaps the better portions of your time while reviewing notes would be taking the 150 highlights and finding the three to five most important, useful, and (importantly) reusable ones to write out in your own words and begin expanding upon and linking? These are the excerpts you'll want to spend more time on and tag/index for future use rather than the other hundreds. Over time, you may eventually realize that the hundreds are far less useful than the handful (in management spaces this philosophy is known as the Pareto principle), so spending a lot of make work time on them is less beneficial for whatever end goals you may have. (The make work portions are often the number one reason I see people abandoning these practices because they feel overwhelmed working on raw administrivia instead of building something useful and interesting to themselves.) Naturally though, you'll still have those hundreds sitting around in a file if you need to search, review, or use them. You won't have lost them by not working on them, but more importantly you'll have gained loads of extra time to work on the more important pieces. You should notice that the time you save and the value you create will compound over time.

And as ever, play around with these to see if they work for you and your specific needs. Some may be good and others bad—it will depend on your needs and your goals. Practice, experiment, have fun.

A Zettelkasten for jokes!

evidence of comedy shift from 50s/60s of one liners to more story-based comedy of the 2000s onward. Some of this may come about through idea links or story links as seen in some of Diller's paperclipped cards (see https://hypothes.is/a/W9Wz-EXsEe6nZxew_8BUCg).

Phyllis Diller's gag file was arranged alphabetically by subject and ranged from "accessories" to "world affairs".

52,569 3x5" index cards!

In this set, you will find cards from the following category: Lockhorns.

https://transcription.si.edu/project/9431

I had some collections of comic strips in my youth, but sadly didn't keep up the practice or them.

Liebenson, Donald. “Classic Hollywood: Remembering Phyllis Diller (and 52,569 of Her Jokes) at the Smithsonian.” Los Angeles Times, May 12, 2017, sec. Television. https://www.latimes.com/entertainment/tv/la-ca-st-phyllis-diller-smithsonian-20170512-story.html.

While many sources seem to indicate that Phyllis Diller had approximately 52,000 index cards with jokes, the ultimate tally after the completion of transcription for the Smithsonian Institution seems to have been 52,569 cards.

While the Los Angeles times lists this as the number of jokes, it's far more likely to be the number of cards as some cards I've seen have multiple jokes.

quote by Hanna BredenbeckCorp, of Smithsonian on Phyllis Diller's gag file

It took four months for Hanna BredenbeckCorp, a project assistant for the Smithsonian Institution, to scan all of Phyllis Diller's joke cards for subsequent transcription and creation of a searchable digital database.

Waldbrände haben 2023 in Kanada bisher mit 1,4 Milliarden Hektar eine Fläche von der Größe Griechenlands zerstört. Ein Attributionsstudie für die Brände in Québec ergibt, dass sie durch die globale Erhitzung mindestens doppelt so wahrscheinlich wurden wir ohne sie, und dass die Temperaturen, die die Brände begünstigten, 20% höher waren als vor der Verbrennung fossiler Energieträger. https://www.theguardian.com/world/2023/aug/22/climate-change-canada-wildfires-twice-as-likely

A statement of the common "one idea per card" (or per note). He doesn't state it, but links to an article whose title is "One Thought Per Note".

Who else has use this or similar phrasing in the historical record? - Beatrice Webb certainly came pretty close. - Others?

First reference I've seen for someone suggesting using half size 3 x 5" index cards so that they could use commercially available Magic: The Gathering (MTG) boxes.

Oxford and possibly other manufacturers already make 1/2 size 3 x 5" index cards.

Which others? where?

To my knowledge there weren't many (any?) examples floating around in 2019.

https://www.attorneyatwork.com/analog-attorney-5-best-index-cards/

Article about general usefulness of index cards written by a lawyer and for them, though not specific to them as a subgroup.

Makes not of Nock's Dot-Dash cards which were apparently 3 x 5" dash gridded cards similar to Midori's grid notebooks. The website for the company is no longer active. Archived site: https://web.archive.org/web/20171007102414/https://nockco.com/paper/dotdash-3-x-5-note-cards

Eric Hoffer apparently had a collection of quotes which he kept on index cards in boxes.

Potentially mentioned in one of his biographies. Possibly:<br /> - American Iconoclast: The Life and Times of Eric Hoffer by Tom Shachtman https://www.amazon.com/American-Iconoclast-Life-Times-Hoffer/dp/1933435380<br /> - Eric Hoffer: The Longshoreman Philosopher by Tom Bethell https://www.amazon.com/Eric-Hoffer-Longshoreman-Philosopher-Institution/dp/0817914153

reply to u/SunghoYahng at https://www.reddit.com/r/Zettelkasten/comments/15sqiq2/zettelkasten_for_normies_what_normies_really_need/

u/SunghoYahng, some of your article sounds like a pared down digital version of a commonplace book which allows for links, so it fits into the older zettelkasten tradition, just not into the more Luhmann-artig version on which this subreddit is generally more focused. Perhaps yours is closer to a digital version of the analog commonplace using index cards that Billy Oppenheimer describes having learned from Ryan Holiday and Robert Greene?

Often people focus too much on Luhmann's prodigious output and then immediately imply or say you should adopt his very specific system without describing what his system did or why it worked so well for him and his particular needs. Very few focus on what it is that they want to accomplish and how they might use his system or the thousands of variations on it throughout history to come to those goals as quickly and easily as they can.

You commit a version of this sin in your opening lines:

The content about Zettelkasten is mostly too long and practically useless. The purpose of this text is to write only what normies really need to know.

Who are these so-called "normies" and what specifically are they trying to accomplish? You don't define either of them, and possibly worse do it in a negative framing. The system you're describing might be a great one, but for whom? What do you expect them to use it for? What will they get out of it?

Many people talk about the "magic" of a zettelkasten and then wave their hands at some version of a workflow of what they think it is or what they think it should be. Perhaps what we all really need is a list of potential affordances that different methods allow and how one might leverage those affordances. How might they be mixed and matched? Then users can decide what outcomes they wish to have (writing, thinking, aggregation, bookmarking, collecting, creativity, artificial memory, serendipity, productivity, wiki, spaced repetition, learning, time wasting, etc., etc.) and which affordances are necessary within their workflow/system to effectuate those specific goals? Finally they can pick and choose a specific version of a methodology/workflow and either an analog substrate (index cards, notebooks, memory palace, etc.) or digital tool/application (Obsidian, Roam Research, The Archive, etc.) to save it all in. Of course once you've chosen that analog or digital tool, does it actually have the affordances you want or need in actual practice? Are they easy to use? Practical? Do they save you time? Are they simple or over-engineered? What happens when they scale to a year of regular use or even a lifetime?

As a simple example, many writers would love a seriously good outliner functionality in their system to pull out the materials they want to work with and then appropriately order them for a potential final written output. In practice, index cards on a big table are fantastic for this process while most (all?) current digital tools are miserable at it. And of course once you've gotten the outline you like in an analog space you have to type it all out to print/publish in a final form, something which the digital affordance of cut and paste would make much simpler. Who wouldn't love a tool that could give you all of these affordances, presuming you needed them?

​

While we're on outlining, very few talk about the ease-of-use that some professional outliners like Dave Winer's Drummer or Little Outliner have versus some of the more text-editing focused tools like Obsidian which are generally poor as outliners (if you could even call them that) in comparison.

If you're interested in folgezettel and outlining, you might appreciate some subtleties in Bob's piece: https://writing.bobdoto.computer/folgezettel-is-not-an-outline-luhmanns-playful-appreciation-of-disfunction/

cross reference https://hypothes.is/a/OhcWSjxyEe6V8DP9P6WNQQ

https://www.nerosnotes.co.uk/collections/foglietto

Looks sort of similar to Ugmonk's offerings...

https://betterhumans.pub/i-built-my-own-personal-productivity-system-around-a-3-x-5-index-card-147d7a8d83de

Melange of GTD, card index, and gamification....

reply to IvanCyb at https://www.reddit.com/r/antinet/comments/1587onp/comment/jt8zbu4/?utm_source=reddit&utm_medium=web2x&context=3 Asking broadly about indexing methods in zettelkasten

When you begin you'll find yourself creating lots of index entries to start, in part because you have none, but you'll find with time that you need to do less and less because index entries already exist for most of what you would add. More importantly most of the entries you might consider duplicating are likely to be very near cards that already have those index entries.

As an example if you have twenty cards on cultural anthropology, the first one will be indexed with "cultural anthropology" to give you a pointer of where to start. Then when you need to add a new card to that section, you'll look up "cultural anthropology" and skim through what you've got to find the closest related card and place it. You likely won't need to create a new index entry for it at all.

But for argument's sake, let's say you intend to do some work at the intersection of "cultural anthropology" and "writing" and this card is also about "writing". Then you might want to add an index entry for "writing" from which you'll branch off in the future. This will tend to keep your index very sparse. As an example you can look at Niklas Luhmann's digitized collection to notice that he spent his career in the area of "sociology" but there are only just a few pointers from his index into his collection under that keyword. If he had tagged every single card related to "sociology" as "sociology" in his index, the index entry for it would have been wholly unusable in just a few months. Broadly speaking his entire zettelkasten is about sociology, so you need to delve a few layers in and see which subtopics, sub-subtopics, sub-sub-subtopics, etc. exist. As you go deeper into specific topics you'll notice that you branch down and out into more specific subareas as you begin to cover all the bases within that topic. If you like, for fun, you can see this happening in my digital zettelkasten on the topic of "zettelkasten" at https://hypothes.is/users/chrisaldrich?q=tag%3A%22zettelkasten%22. The tool only shows the top 50 tags for that subject in the side bar, but you can slowly dig down into subtopics to see what they look like and a bit of how they begin to overlap.

Incidentally, this is one of the problems with those who tag everything with top level topic headings in digital contexts—you do a search for something important and find so much that it becomes a useless task to try to sift through it all. As a result, users need better tools to give them the ability to do more fine-grained searching, filtering, and methods of discovery.

p xxvi

Hutchins closes his preface to his grand project with Mortimer J. Adler by giving pride of place to Adler's Syntopicon.

Adler's Syntopicon isn't just an index compiled into two books which were volumes 2 and 3 of The Great Books of the Western World, it's physically a topically indexed card index of data (a grand zettelkasten surveying Western culture if you will). It's value to readers and users is immeasurable and it stands as a fascinating example of what a well-constructed card index might allow one to do even when they don't have their own yet.

Adler spoke of practicing syntopical reading, but anyone who compiles their own card index (in either analog or digital form) will realize the ultimate value in creating their own syntopical writing or what Robert Hutchins calls participating in "The Great Conversation" across twenty-five centuries of documented human communication.

See also: https://hypothes.is/a/WF4THtUNEe2dZTdlQCbmXw

The way Hutchins presents the idea of "Adler's achievement" here seems to indicate that Hutchins didn't have a direct hand in compiling or working on it directly.

Bei einem von der Firma ABB organisierten Event haben Urbanismus-Fachleute Konzepte für eine nachhaltige urbane Infrrastruktur vorgelegt. Stefano Boeri sprach sich für Städte als Archipele von energieunabhängigen „Inseln“ aus, Entscheidende Faktoren seien Energie-Gemeinschaften und Smart Grids.

ABB-Broschüre zu nachhaltiger städtischer Infrastruktur:https://cataloghi.it.abb.com/view/522012665/

https://www.repubblica.it/green-and-blue/dossier-native/essere-protagonisti-della-sostenibilita/2023/07/11/news/una_citta_sostenibile_e_possibile_e_necessaria-407273267/

reply to u/ihaveascone at https://www.reddit.com/r/Zettelkasten/comments/14v2ohz/converting_commonplace_books/

Don't convert unless you absolutely need to, it will be a lot of soul-crushing make work. Since some of your practice already looks like Ross Ashby's system, why not just continue what you've been doing all along and start a physical index card-based index for your commonplaces? (As opposed to a more classical Lockian index.) As you browse your commonplaces create index cards for topics you find and write down the associated book/page numbers. Over time you'll more quickly make your commonplace books more valuable while still continuing on as you always have without skipping much a beat or attempting to convert over your entire system. Alternately you could do a paper notebook with a digital index too. I came across https://www.indxd.ink, a digital, web-based index tool for your analog notebooks. Ostensibly allows one to digitally index their paper notebooks (page numbers optional). It emails you weekly text updates, so you've got a back up of your data if the site/service disappears. This could potentially be used by those who have analog commonplace/zettelkasten practices, but want the digital search and some back up of their system.

https://www.ebay.com/p/1154231946

https://www.flickr.com/photos/hawkexpress/194730263

Hawk Sugano used a Correct Indexcard Dock (C-153DF) box for some of his index card practice.

reply to u/taurusnoises (Bob Doto) at tk

Yep, for almost a full year now on 4x6" index cards. (Receipts for the kids: https://boffosocko.com/wp-content/uploads/2023/07/wp-1688411021709-scaled.jpg)

Previously I'd used a Hobonichi Cousin (page per day) journal for this. (Perhaps I should have stayed with the A6 size instead of the larger A5 for consistency?) Decades ago (around 1988ish?) I had started using a 2 page per day DayTimer pocket planners (essentially pre-printed/timed index cards spiral bound into monthly booklets which they actually shipped in index card-like plastic boxes for storage/archival purposes). Technically I've been doing a version of this for a really long time in one form or another.

It generally includes a schedule, to do lists (bullet journal style), and various fleeting notes/journaling similar to the older Memindex format, just done on larger cards for extra space. I generally either fold them in half for pocket storage for the day or carry about in groups for the coming week(s) when I'm away from my desk for extended periods (also with custom blank index card notebooks/pads).

I won't go into the fact that in the 90's I had a 5,000+ person rolodex... or an index card (in the entertainment they called them buck slips) with the phone numbers and names of \~100 people I dealt with regularly when early brick cell phones didn't have great (or any) storage/functionality.

reply to Bob Doto at https://www.reddit.com/r/Zettelkasten/comments/14lcb4z/using_diaries_and_journals_as_source_material_for/

Ross Ashby kept his notes in notebooks/journals but he did cross-index them by topic using index cards. Rather than reference them by notebook (name/title/date) and page number, he kept a set of handwritten running page numbers across the entirety of his notebooks, so instead of Notebook 15 page 55, 1952 he'd simply write "3786" for page 3786. This can be seen on his index card for the indexed word "determinate" as an example.

For other examples, see: http://www.rossashby.info/journal/index/index.html

My own notebooks are usually titled by year and date spans along with page numbers, so I'll use those roughly as Bob describes. This has made it much easier to not need to move all my older notes into a card-based system, but still make them useable and referenceable.

For those with more explicit journaling, diary, or other writing habits, Ralph Waldo Emmerson makes an interesting example of practice as he maintained at least two commonplace books (a poetry-specific one and a general one) as well as a large set of writing journals where he experimented with writing before later publishing his work. Since there are extant (digitized and published copies) and large bodies of scholarship around them, they make an interesting case study of how his process worked and how others might imitate it.

​

On the diary front, of the historical examples I've seen floating around, only Roland Barthes had a significant practice of keeping his "diary" in index card form, a portion of which was published on October 12, 2010. Mourning Diary is a collection published for the first time from Roland Barthes' 330 index cards focusing on his mourning following the death of his mother in 1977.

Not as extensive, Vladimir Nabokov recorded a "diary" of sixty-four dreams on 118 index cards beginning on October 14, 1964 as an experiment. He was following the instructions of John Dunne, a British philosopher, in An Experiment with Time. The results were published by Princeton University Press in Insomniac Dreams: Experiments with Time by Vladimir Nabokov which was edited by Gennady Barabtarlo.

Presumably if one keeps a diary or journal in index card form in chronological order, they can simply reference it by date and either time or card X of Y, if there are multiple card entries for a single day. I keep a dated diary of sorts on index cards, though they rarely go past one card a day.

Does he really mean anachronistic here? It doesn't seem to suit the context. While he seems to be comparing the time-ordered nature of a journal versus the non-time ordered structure of a zettelkasten, I can't help but read it from the alternate, and more common (and also pejorative) perspective. Seems odd to call it out specifically as it's not an issue with respect to any other of the more commonly used sources (books, journal articles, magazines, newspapers.)

Might have been better to use anachronistic to modify zettel rather than zettelkasten which is a collective noun--that's the dissonance here for me.

Compare those, like Roland Barthes, who used a slip box as a diary, which would have been chronological. I've also got a chronological section of my slip box.

It's been a while since this was asked, but in case folks stumbling across it are interested, there are a few useful examples and resources: - Original Pile of Index Cards set up: https://www.flickr.com/photos/hawkexpress/albums/72157594200490122/ (Be sure to click on some of the example card photos which have descriptions of set up/use.) - 43 tabs: https://web.archive.org/web/20110714192833/http://pileofindexcards.org/wiki/index.php?title=43Tabs_System - Lifehacker Article: https://lifehacker.com/the-pile-of-index-cards-system-efficiently-organizes-ta-1599093089 - Uncluterer: https://web.archive.org/web/20140708133632/http://unclutterer.com/2014/06/17/the-pile-of-index-cards-poic-system/ - Some historical systems (esp. Memindex which preceded the PoIC): https://boffosocko.com/2023/03/09/the-memindex-method-an-early-precursor-of-the-memex-hipster-pda-43-folders-gtd-basb-and-bullet-journal-systems/

Amazon has badge holder trays/organizers that can be used similarly to index card bleachers.

Try: https://www.amazon.com/s?k=Badge+holder+organizer&crid=10DA7CASQVMB4&sprefix=badge+holder+organizer

https://m.tb.cn/h.5Z13g30?tk=KLGsdsMqWwm

Suggested by u/khimtan at https://www.reddit.com/r/antinet/comments/14mx0gx/card_holder_tray_now_i_can_view_around_35_cards/

Die Rauchwolken der riesigen Waldbrände in Kanada bedrohen zum zweiten Mal die Gesundheit der Einwohnerinnen und Einwohner großer Teil der USA. In vielen Städten erreicht der Air Quality Index Werte von über 200. Ab 100 sind Menschen mit Atmwegsbeschwerden akut gefährdet.

https://www.nytimes.com/2023/06/28/us/canada-wildfire-smoke-air-quality-midwest.html

The author goes into the correlation between categorization (branching) and the use of the index and the focus on them respectively. He mentions he "learned" that branching would be more beneficial than the using of the index to make finding the cards easier.

I strongly disagree with this focus. I agree with the "relational" principle of put the card between the one that has the closest proximital conceptual relation. The Zettelkasten's power relies in serendipitous creativity (or creativity/insight by chance), this is facilitated highly by the use of connectivity between cards, where each card as you go down the "hierarchy" of "branches" will be more unrelated to the original topic. (See also Luhmann's paper Communication with Zettelkasten, Manfred Kuehn Translation and Johannes F.K. Schmidt's article on Zettelkasten within Forgetting Machines, as well as his video presentation about Zettelkasten). In short, the friction of searching for cards by following trains of thought through connectivity boosters insight by chance and therefore facilitates the power of the system.

This is also, I believe, why Bob Doto argues to let categories emerge after the creation of notes/streams of thought instead of making the names for the "branches" up front.

I believe Luhmann himself also emphasized the use of the index by calling it a system of "query into the database," the index is the main navigational map for the Zettelkasten. If you have a question for your "communication partner" the index is the way to go. For example, if I wanted to know the impact of cognitive load theory within employee management as a CEO, I would go to my index and collect the entrances for both "branches" or terms, and then start reading these thought streams... Afterward, I might synthesize and create a new branch somewhere, in one of the aforementioned categories, or an entire new one, where I put the results of this questioning.

My own system of numbering and branching in this way is the following: A number signifies a note's position within a stream of thought. I branch off if, following the relational principle, a note adds unto a thought on a specific card, but not the stream specifically. This gets signified by a letter.

So, 1a1, 1a2, 1a3, and 1a4 are all part of the same stream while 1a, 1b, and 1c would all be different "branches" stemming from the original card that would be 1 in this case. This can repeat infinitely, therefore facilitating what Luhmann calls "Infinite potential for inward growth" of the system. It's autopoietic and cybernetic. (See also: The Radical Luhmann by Hans-Georg Moeller).

Something that can benefit the finding of notes once the system grows sufficiently large is the use of "structure" or "hub" cards where you put down a few key entrances to concepts related to this stream of thought or "branch" in remote sections of the Zettelkasten.

Most older card indexes are common enough, but I thought I'd tip off anyone who is all in on 5x8" index cards and may be looking for a permanent home for their growing collection that there's a reasonably rare, but lovely looking Yawman & Erbe card catalog for sale right now.

Syndication link: https://www.reddit.com/r/antinet/comments/14jlk69/beautiful_18_drawer_yawman_erbe_card_catalog/

via Joan Rivers: A Piece of Work.(Break Thru Films/IFC, 2010)

National Comedy Center Becomes Home to Joan Rivers’ Career Archive<br /> by National Comedy Center

The NY Times blew her obituary date of 2014 when they published material based on this press release.

Joan Rivers card index of jokes comprised 65,000 cards spanning the start of her career in the 1950s to 2014, when she passed away.

https://www.imdb.com/title/tt1568150/

Based on having watched the documentary Joan Rivers: A Piece of Work and the depictions of Rivers' card index in the film and using her hands and a lateral file for scale, her cards seem to have been 3 x 5" index cards.

cross reference: https://hypothes.is/a/RvLTZjCQEe2uuaNwpTBNuA

Zinoman, Jason. “A ‘Crown Jewel of Comedy’: The Joan Rivers Card Catalog of Jokes Finds a Home.” The New York Times, June 8, 2023, sec. Arts. https://www.nytimes.com/2023/06/08/arts/television/joan-rivers-archive.html.

standing in front of her card index for comedy, built into a wall of other files.

In the documentary Joan Rivers: A Piece of Work, she explains how she kept and filed records of her jokes.

Example typewritten jokes from Joan Rivers' card index of comedy:

Joan Rivers card index of jokes is categorized by topical headings like "Parents hated me", "Las Vegas", and "No sex appeal". The largest subject category in her collection was "Tramp" with 1,756 jokes.

quote by Journey Gunderson, the executive director of the National Comedy Center

Ignoring Bob Hope's collection or possibly that by Sid Caesar.

Joan Rivers card index of jokes spans material covering the 1950s to 2015.

To avoid the Raiders of the Lost Ark problem, Melissa Rivers donated her mother's joke collection to the National Comedy Center so it would be on display and accessible. The New York-based museum is also home to the archives of George Carlin and Carl Reiner.

Joan Rivers' card catalog of ~65,000 cross referenced jokes will be housed at the National Comedy Center, a museum in Jamestown, NY.

At 9¢/card these are very expensive in comparison to bulk cards which usually can be found for 1-2¢/card. The difference however is in the luxuriousness of the silky smooth texture. Whether you're writing with your favorite fountain pen or a carefully chosen pencil. I don't know if these are the same brand of Bristol cards that Vladimir Nabokov used for his writing, but one could easily image him using such lovely material.

These provide a very smooth writing experience for fountain pens, gel pens and pencils. I particularly love the way my Tennessee Reds and Blackwing 602s glide over their surface. In comparison to some Japanese stationery, I'd put these cards somewhere between tsuru tsuru (slippery) and sara sara (smooth). If you're looking for a toothier paper, you'll definitely want to look elsewhere. They take fountain pens pretty well with no feathering or ghosting. My juiciest fountain pen dries in about 15 seconds, while a drier extra fine is dry in about 7 seconds, so it may take some care not to smear ink if you're on the messier end of the spectrum.

Pencil erases reasonably well, though there may be some minimal residual ghosting here. At 205 gsm, they've got a satisfying thickness unseen in most index cards and one is unlikely to rip or crinkle them when erasing. They're also thick enough that the wettest Sharpie won't bleed much less ghost through. You have to hold a card up to a backlight to see the appearance of any ghosting through it and even then, not well.

For the sticklers used to using standard 4 x 6" index cards, one should take note that the dimensions of these are slightly shorter in both dimensions—they're closer to 3.94" x 5.91". This means that you might have to take some care that while flipping through mixed company of cards your Exacompta can potentially hide between larger imperial sized cards. They're also close to, but not quite A6 in size either (105 x 148.5 mm or 4.1 x 5.8 inches).

https://www.bulkofficesupply.com/

Vladimir Nabokov recorded sixty-four dreams on 118 index cards beginning on October 14, 1964 as an experiment. He was following the instructions of John Dunne, a British philosopher, in An Experiment with Time. The results were published by Princeton University Press in Insomniac Dreams: Experiments with Time by Vladimir Nabokov which was edited by Gennady Barabtarlo.

Zettelkasten Lesson Plan Intro

Not much here beyond his longer article, though it does have a sample format for zettel which can be useful for those starting out.

Santalucia, Nick. “The Zettelkasten in the Secondary Classroom.” Blog, July 6, 2021. https://www.nicksantalucia.com/blog/the-zettelkasten-in-the-secondary-classroom-k12.

Card Grip. (Right and Left). Hold cards firmly against the platen.

p 5

reply to u/enabeh at https://www.reddit.com/r/Zettelkasten/comments/13s6dsg/comment/jluovm9/?utm_source=reddit&utm_medium=web2x&context=3

If you're curious, I've been collecting examples of teachers/professors who used their zettelkasten for teaching: https://hypothes.is/users/chrisaldrich?q=tag%3A%27card+index+for+teaching%27 Examples include Mario Bunge, Frederic L. Paxson, Gotthard Deutsch, Roland Barthes, and Joachim Jungius. In more recent contexts, I've seen Dan Allosso (aka u/danallosso), Mark Robertson (aka calhistorian u/calhistorian), and Sean Graham (https://electricarchaeology.ca/) using zettelkasten or linked notes using Obsidian, Roam, etc. for teaching. Perhaps we should get the group together to trade stories? Ping me with an email if you're interested.

https://www.paperbistro.com/browse-by-brand/exacompta/paper/index-cards.html

Manufacturer direct

https://www.youtube.com/watch?v=dU7efgGEOgk

I wish he'd gotten into more of the detail of the research and index card making here as that's where most of the work lies. He does show some of his process of laying out and organizing the cards into some sort of sections using 1/3 cut tabbed cards. This is where his system diverges wildly from Luhmann's. He's now got to go through all the cards and do some additional re-reading and organizational work to put them into some sort of order. Luhmann did this as he went linking ideas and organizing them up front. This upfront work makes the back side of laying things out and writing/editing so much easier. It likely also makes one more creative as one is regularly revisiting ideas, juxtaposing them, and potentially generating new ones along the way rather than waiting until the organization stage to have some of this new material "fall out".

https://www.levenger.com/collections/pocket-briefcases/products/bomber-jacket-international-pocket-briefcase?variant=42485604778133#

Levenger sells a line of various "pocket briefcases" which include space for 3 x 5" index card "ticklers" which are similar in form to the old Memindex.

A 9 x 5" card that folds in three to make a 3 x 5" card for planning out one's entire week.

This is quite clever with respect the space of cards like Analog and 3x5 Life.

https://www.levenger.com/collections/notecards/products/perfect-timing-3-x-5-cards-90-cards?variant=42485738045589#

Slightly different than today/next/someday, Levenger sells 90 today/tomorrow/someday 3 x 5" index cards for $14.50 (or $10.00 on sale).

My complete review:

Take Off Your Mask

I genuinely appreciate the dedicated effort put into developing a new approach for measuring citations. However, I respectfully disagree with the effectiveness of the h-index as a reliable metric, and I believe that proposing a new metric that closely resembles it may not address the existing flaws adequately. Furthermore, I strongly advocate for the inclusion of qualitative measurements alongside quantitative ones, as I believe a comprehensive evaluation should consider both aspects.

The h-index is a simplified measure that counts the number of papers that have been published by a researcher, and the number of times those papers have been cited. However, it is a flawed measure because it does not directly take into account the quality of the papers that have been published. A researcher could have a high h-index by publishing a large number of papers that are not very well-cited, or by publishing a small number of papers that are very well-cited.

I believe that it is important to include qualitative measurements in addition to quantitative measurements. Qualitative measurements can be used to assess the impact of a researcher's work, and the quality of the work that has been published. For example, qualitative measurements could be used to assess the impact of a researcher's work on other researchers, or the impact of a researcher's work on the field of science.

I believe that a new measure of citation should include both quantitative and qualitative measurements. This would allow for a more accurate and reliable assessment of a researcher's impact.

I would like to suggest that the new measure of citation should include the following qualitative measurements:

• The impact of the researcher's work on other researchers.
• The impact of the researcher's work on the field of science.
• The quality of the researcher's work.

With the advancement of technology, we now have the capability to utilize applications such as Open Knowledge Maps, Scite, or Vosviewer to explore the context of citations, their interconnectedness within a network, and the specific keywords employed in the citing manuscripts.

I believe that these qualitative measurements would provide a more accurate and reliable assessment of a researcher's impact than the h-index alone.

About the #TakeOffYourMask I would like to introduce the idea of a hashtag called #TakeOffYourMask as a symbol of my commitment to challenging the reliance on prestige-based assessments, such as the h-index, and embracing a more authentic representation of our research endeavors.

1. The H-index is a measure of scientific output, but it has some limitations. The H-index is a measure of the number of papers that have been cited at least that many times.
2. A new measure of scientific output is needed that addresses the limitations of the H-index. The H-index has some limitations, such as the fact that it does not take into account the quality of the papers or the impact of the citations.
3. A new measure of scientific output is needed that addresses the limitations of the H-index. This new measure could be based on factors such as the number of citations, the position of the author on the author list, and the number of authors on the paper.

This new measure could be implemented using artificial intelligence.

• Consensus among publishers, researchers, and funders is crucial for moving beyond the H-index and implementing new approaches in evaluating scientific achievement.
• Proposals for a new scoring system involve assigning scores to each author based on their contribution to an article, taking into account factors like the number of authors, position in the author list, number of citations received (excluding self-citations), and the impact factor of the citing journals.
• While this approach may appear complex, it is feasible through automated indexing systems and could address the limitations of the current evaluation system.

summary from introduction: - The H-index is a metric that measures the scientific output of researchers. - It is calculated by counting the number of articles with at least as many citations as the researcher's H-index. - The H-index is used to evaluate researchers' professional success and can impact research funding. - However, the H-index has several limitations, including: - It does not consider the actual contribution of each author. - It does not consider the number of authors. - It assigns equal weight to citations by articles published in low-impact journals and citations by articles published in high-impact journals. - Articles with number of citations lower than the H-index do not contribute to it, as well as citations exceeding the H-index. - Several alternative scoring systems have been proposed, but none of them have simultaneously addressed all of the limitations of the H-index.

My summary:

The paper discusses the limitations of the H-index as a measure of researchers' success and proposes a novel method for a fairer assessment of scientific impact. The proposed method takes into account the actual contribution of each author, the number of authors, their overall scientific production, and the scientific quality of citing articles. The method involves distributing the score of an article among its authors based on the number of citations and the weight of these citations. The overall score for an author is the sum of scores obtained for each authored article. The paper suggests that a better, merit-based proxy measure is warranted and can be achieved, although a perfect score without shortcomings is a chimera. Qualitative judgments are also necessary to adequately represent authors' scientific achievements.

via: Didier Eribon, Conversations with Claude Lévi-Strauss (Chicago: University of Chicago Press, 1991), vii–viii; Claude Lévi-Strauss, Structural Anthropology (New York: Basic Books, 1963), 129f.

source apparently from: “Apparition de la fiche et constitution des sciences humaines: encore une invention que les historiens célèbrent peu.” Michel Foucault, Surveillir et punir. Naissance de la prison (Paris: Gallimard, 1975), 287, referring to A. Bonneville, De la recidive (Paris, 1844), 92–93.

How can Linnaeus (1707-1778) be said to have invented the card index or the index card when there are systems that predate him including Vincent Placcius and Leibnitz?

Linnaeus' version were all of a standard size at least. Would this have been a shift in the definition or did others have and recommend "cards of equal size" before this?

The 1993 game Myst, available on CD-ROM, had a card index like format.

Krapp, Peter. “Paper Slips: The Long Reign of the Index Card and Card Catalog.” In The Routledge Companion to Media Technology and Obsolescence, edited by Mark J. P. Wolf. Routledge, 2019.

via: https://www.3x5life.com/collections/frontpage/products/3x5-life-system-with-mini-course

They apparently offer a mini course outlining the system.

One wonders how much "why" they offer?

https://www.3x5life.com/

Compare with other products in this category: - Analog (Jeff Sheldon productivity system) - Memindex - Bullet Journal - Frictionless Capture Cards - Pile of Index Cards

Frictionless Tools' Capture Cards were custom 3 x 5" index cards, printed in vertical orientation with a square grid pattern on most of the card. The top was usually split in half between equal grey and red rectangles for titles/dates/headings and a slightly thinner single long rectangle as a footer at the bottom.

Patrick Rhone indicates on 2018-01-24 that they had quit manufacturing them by that date.

Wellisch, Hans H. The PRECIS Index System: Principles, Applications, and Prospects : Proceedings of the International PRECIS Workshop, October 15-17, 1976. Illustrated edition. New York: Wilson, 1977.

https://www.amazon.com/PRECIS-index-system-applications-International/dp/0824206118

https://aboard.com/

In beta May 2023, via:

All right. @Aboard is in Beta. @richziade and I are to blame, and everyone else deserves true credit. Here's an animated GIF that explains the entire product. Check out https://t.co/i9RXiJLvyA, sign up, and we're waving in tons of folks every day. pic.twitter.com/7WS1OPgsHV

— Paul Ford (@ftrain) May 17, 2023

Has your prior system not been working for you? What do you want to gain from making the change? What list are you looking at that you don't see a category? Isn't the category "writing", "fiction writing", "nonfiction writing", etc.?

I started making lists on index cards—you know the ones we used back in school.

Note the total lack of any referent to why we used to use index cards in school.

Following a pattern seen in many modern wooden recipe card boxes to hold the current recipe one is working on, Jeff Sheldon has cut a long thin slot into his card holder to allow one to stand up today's card in the front as a means of displaying and featuring what needs to get done.

https://www.kickstarter.com/projects/ugmonk/analog-the-simplest-productivity-system

Jeff Sheldon's Analog productivity system is a physical product consisting of a wooden tray, metal divider, 3 x 5" custom printed index cards (and refills), a felt carrier, and other accessories which functions as a minimalistic version of the old Memindex.

Despite being used primarily as a productivity tool the PoIC system also included some features of personal knowledge management with "discovery cards" and "citation cards". Discovery cards were things which contained one's own ideas while the citation cards were the ideas of others and included bibliographic information. Citation cards were tagged on the 5th block as an indicator within the system.

Question: How was the information material managed? Was it separate from the date-based system? On first blush it would appear not, nor was there a subject index which would have made it more difficult for one to find data within the system.

Overall measurements for Steelmaster Index Card file for 4 x 6" index cards are 16” deep x 12.25” wide x 5.25” tall.

https://www.ebay.com/itm/125930697280