Julius Reizen in reviewing over Umberto Eco's index card system in How to Write a Thesis, defines his own "insurance card" as one which contains "hard-to-classify thoughts, questions, and areas for further inquiry". These he would keep together so that they don't otherwise get lost in the variety of other locations one might keep them

These might be akin to Ahrens' "fleeting notes" but are ones which may not easily or even immediately be converted in to "permanent notes" for one's zettelkasten. However, given their mission critical importance, they may be some of the most important cards in one's repository.

link this to - idea of centralizing one's note taking practice to a single location

Is this idea in Eco's book and Reizen is the one that gives it a name since some of the other categories have names? (examples: bibliographic index cards, reading index cards (aka literature notes), cards for themes, author index cards, quote index cards, idea index cards, connection cards). Were these "officially" named and categorized by Eco?

May be worthwhile to create a grid of these naming systems and uses amongst some of the broader note taking methods. Where are they similar, where do they differ?

Multi-search tools that have full access to multiple trusted data stores (ostensibly personal ones across notebooks, hard drives, social media services, etc.) could potentially solve the problem of needing to remember where you noted something.

Currently, in the social media space especially, this is not a realized service.

David Witzel said:

I was trying to find David Roodman's "open book" on microfinance from 2010. Lots of link rot - not sure where it best lives now.

He had interesting stories about how difficult/useful the open writing process was. https://www.cgdev.org/article/microfinance-open-book-blog-qa-david-roodman

Based on the dating provided by Anscombe and von Wright, Wittgenstein's zettelkasten slips dated from 1929 to 1948.

for reference LW's dates were 1889-1951

Supposing that the notes preceded the typescripts and not the other way around as Anscombe and von Wright indicate, the majority of the notes were turned into written work (typescripts) which were dictated from 1945-1948.

What was LW's process? Note taking, arranging/outlining, and then dictation followed by editing? Dictating would have been easier/faster certainly if he'd already written down his cards and could simply read from them to a secretary.

I've not seen this explicitly laid out as advice before though in most contexts people's note taking spaces have historically been divorced from their writing spaces for publication because slips and notes are usually kept physically separate from the working spaces or finished parts, but Richard Carter specifically separates the digital spaces in which he takes his notes and then uses them for creating end products. While he could both take notes in Obsidian, his tool of choice for notes, as well as write his finished pieces there, he actively changes contexts to use a different digital app to compose his notes into final pieces.

What affordances does this context shift provide? <br /> - blank slate may encourage reworking and expansion of original notes - is there a blank slate effect and what would it entail? - potentially moves the piece into a longer format space or tool which provides additional writing, formatting or other affordances (which? there don't seem to be any in this case aside from a potential "distraction free mode" which may tend to force one to focus only on the piece at hand rather than the thousands of other pieces (notes) hiding within the app)

What affordances does this remove?<br /> - He's forced to repeat himself (cut & paste / DRY violation)

Is it easier or harder (from a time/effort perspective) to provide citations with such a workflow? Carter does indicate that for him:

Having links to original sources in my outline makes the compilation of references for the chapter far easier than it used to be.

I'm curious if this will be an answer to the question I asked in Call for Model Examples of Zettelkasten Output Processes?