How a polymath wiki replaced my journal.
I kept a journal for fifteen years. Three notebooks at any given time. One by the bed for the things I noticed before sleep. One in the work bag for the things I needed to remember by Wednesday. One at the desk for the long thinking that wouldn't fit on a Slack message.
The notebooks were a comfort. They were also a graveyard.
The bed-side notebook would fill up with single-line observations I would never read again. The way she said no. Why does the maitre d' at that place know my name. Sanskrit grammar is shaped like code. Maybe the model is wrong because the weather is wrong. Pages of these. Beautifully handwritten. Never re-read.
The work notebook was more useful, because the deadline pressure forced me to flip through it. But it was indexed by date, which is the wrong index for a thought. I know I wrote something about vendor lead times in late February. The search took fifteen minutes. The thought, when I found it, was usually less useful than the search had cost.
The desk notebook had the worst fate of all. It held the long thinking, the half-essays, the arguments with myself about whether to take a meeting, whether to write a tool, whether to send a letter. I would write three pages and feel resolved. A month later I would write the same three pages without remembering the first set. The journal as a recurrence machine.
About a year ago I stopped buying new notebooks. I started building a wiki. This is the story of what that move teaches you about the difference between writing things down and thinking publicly.
What the wiki is
The wiki lives at way2abhi.com/polymath. It is three hundred pages on whatever has pulled my attention long enough to want to think it through. The titles tell you the shape of the thing.
Concept · Causal emergence. Person · Claude Shannon. Concept · Polynesian wayfinding. Event · The Bronze Age collapse. Tech · Magsail braking. Concept · The Maillard reaction. Concept · Karma yoga. Concept · Sanskrit phonology.
Some of these came out of a book I read. Some out of a podcast on a flight. Some out of a sentence in a meeting that I could not get out of my head until I had written it down properly. Every page is between five hundred and two thousand words. Every page links to other pages with double-bracket wiki-links, and the links matter more than the pages themselves.
The wiki has a curator. She is an AI agent I built who reads my activity, picks topics from a curiosity seed file, writes the first draft of new pages overnight, polishes old pages on a schedule, and posts to a small public Telegram channel each morning. Her name is Shakuntala. She is also the thing that runs my morning, manages a small set of bots, and writes the daily summary I read before bed. The wiki is one of her habits.
The polymath wiki is not a blog. A blog is published. The polymath wiki is more like a public notebook with hyperlinks and an editorial assistant.
Why the journal failed
A journal is a private one-way medium. You write into it. It sits there. If you re-read it, the act is deliberate, and most of the time the act of re-reading doesn't happen, because re-reading a journal feels less productive than writing in it. So the writing accumulates. The re-reading doesn't. The thinking stops short of the point where it becomes useful.
A journal is also unstructured. The thought about vendor lead times sits next to the thought about your mother's birthday next to the thought about the dye route on a fabric base. These three thoughts have nothing to do with each other. The journal does not know that. The journal treats them as siblings because they were written on the same day. The index by date is the wrong index for a thought.
A journal is also lonely. Most of what you write in a journal is half-finished, because nobody is going to read it and you have not earned the burden of being clear. You can leave a sentence vague. You can not bother finishing the argument. The journal lets you off easy. It is not a deliberate practice.
The wiki took all three of those failure modes and inverted them.
It is read-write. Every page is published the moment I save it. The act of writing is the act of publishing. There is no separate "now I will share this" step. The thought has to leave the workshop the moment it is built.
It is indexed by topic, not by date. The vendor-lead-times thought goes on the vendor page, or the lead-time forecaster page, or the trial-drop cadence page. The next time I want to find it, I go to the topic. There is no fifteen-minute hunt.
It is hyperlinked. Every page links to every other page that touches it. The link is the unit of value. Bronze Age collapse links to the Late Bronze Age supply chain links to Why supply chains die links to fragility in just-in-time retail. That last page is the one I would never have written if the journal had been the medium. The link was the question I didn't know I had until the wiki forced the question into a form.
And it is public. Other people can read it. This is the most uncomfortable of the changes. A journal lets you write something half-true. A public wiki does not. The moment you write most people say X, but I think Y on a public page, you have to either back it up or take it down. You become better at thinking because the act of writing has stakes.
What this teaches that a journal could not
A few things I did not expect.
One. A topic page is a higher-resolution memory device than a date page. I have a flow state page on the wiki. Everything I have ever thought about flow state is on it. Some of those notes came from January 2024. Some came from last week. They all live together, arranged not chronologically but by the kind of claim they make. When somebody asks me a question about flow state, I open the page. The answer is already there.
Two. Cross-realm links produce ideas you cannot otherwise produce. I have a page on the Maillard reaction and a page on textile dye chemistry. They are nominally about different things. The link between them is that both are about the way molecular structure determines colour, but with different inputs. Writing the link forced me to think the connecting thought. The connecting thought turned out to be useful in a buying meeting six months later, when I was thinking about why a fabric base was rejecting the dye route the vendor had spec'd. The journal would never have produced that connection.
Three. The curator is a co-author. I am not the only person writing the wiki anymore. The AI curator picks a topic from the seed file each night, writes a draft, and pushes it to a folder for me to read in the morning. Most days I edit her draft and push it live. Some days I rewrite the whole thing. Some days I leave her draft up untouched because she has caught a thought I had not arrived at. The act of editing her work has taught me more about my own writing than fifteen years of solo journaling.
Four. Publishing in public forces editing in a way that private writing does not. I have, on average, twenty visitors to a polymath page on the day it goes live. Most of them are people I will never meet. A few of them are people I work with. Writing for that audience is different from writing for a future-me who is almost certainly not going to re-read this. The audience disciplines the sentence.
Five. The wiki has changed what I notice. After a year, I walk through a museum or a market or a Sunday paper differently. Things catch my attention more often. The reason is simple. I have a place to put them. The friction between noticing a thing and having that thing turn into a thought used to be a notebook page that would never be re-read. Now it is a paragraph on a topic page that future me will absolutely find. The reward function for noticing has changed.
The cost
A few honest things.
The wiki is more work than a journal. A journal is finished the moment the pen stops moving. A page on the wiki has to be linkable, has to have a frontmatter, has to be edited at least once, has to be published, has to be cross-linked. The minimum viable wiki page is ten minutes of work. The minimum viable journal entry is thirty seconds.
The wiki is also less personal. There are things I will not write on a public wiki that I will write in a private notebook. The argument with myself about whether to take a meeting is not going on the polymath wiki. The polymath wiki is for the kind of thinking I am willing to defend. The personal thinking still lives in a notebook by the bed. The notebook by the bed is now mostly empty, but the few entries that go into it are more honest than they used to be, because the rest of the noise has moved out.
The wiki is also less private. Some thoughts have an obvious audience. The thought about a vendor's pricing belongs in a buying meeting, not on a public wiki. The thought about the way a friend is handling a divorce does not belong anywhere except a phone call. The wiki teaches you, by editing every sentence twice, which thoughts are which.
The shape of the practice
If you are wondering whether to try this, here is the smallest version of the practice that works.
Pick a tool that lets you write in a notebook-shaped way and publish in a wiki-shaped way. The exact tool matters less than the act. I built mine. You can use Obsidian, a static-site generator, a Notion database with public pages, a Quartz wiki on a free host. The choice is taste, not consequence.
Start with five pages. One per week. Pick the topics that have been recurring in your private notebooks. The recurring ones are the ones that want to be public. The one-off thoughts can stay in the notebook by the bed.
Link liberally. The first time you write the second page, link it to the first. The first time you write the third, link it to both. After ten pages, you have a small graph. After a hundred, the graph is doing thinking for you that you could not do alone.
Publish every page the day you write it. The publication is the discipline. The publication is the deal.
If you can, add a curator. An AI agent that writes a draft for you on the days you don't have the time is the single biggest gift the current generation of LLMs gives the polymath. The curator does not replace your thinking. She compresses the friction between I want to write a page on X and there is now a page on X. You still write the second draft. She just made sure the first draft existed.
Closing
The notebooks are not gone. The bed-side one is still there, mostly used for things I will not write down anywhere else. The work one is mostly replaced by a meeting transcript or a wiki page. The desk one is gone entirely. Its job is done by way2abhi.com/polymath.
The thing I did not expect is how much more curious I am now than I was a year ago. The reason is mechanical. A noticing that turns into a page that links into a graph is a noticing that earns its keep. The journal punished noticing by making it disappear. The wiki rewards it by making it compound.
If you have been keeping a journal that you do not re-read, consider trying this. It will be more work. It will also turn what was a graveyard of half-thoughts into the most useful object you have ever owned.
Always up for a conversation about how you take notes, or how you stopped, or anything else on the floor.