Mattie Fairchild

When I joined Polygon, one of the first things I wrote was this document. It's incredibly important to me, because it's about what's important to me. I share it with every new member who joins my team. A User's Guide to Working with Mattie

@medeana There is so much going on in this tweet

addicted to robot unboxing videos on RedNote

Where are the egocentric datasets exclusively of people building LEGOs? I want 1,000+ hours of grown adults fumbling with LEGOs using large lobster claw devices and force my model to watch it to then see how my robot handles stepping on a random piece at 2am

@ExistentialEnso Congrats!!

I weighed about 240 lbs this time last year and about 180 lbs now A quarter of me is gone!

@sonofalli Genuinely, genuinely, everything is genuinely

Obvious AI tells in your writing: - em dashes - not just x, but y - and honestly? - “leverage” “delve” “palpable”

@bawan269 If you aren’t reading and editing the markdown files, why do you need obsidian?

@Scav Obsidian is the document database, Codex is the interface. Knowledge, context, and history live in markdown files, while the agent handles understanding, retrieval, and execution.

Is anyone actually still using Obsidian?

@tsvillain I think it was TS Eliot who said “I think therefore .md”

@Scav I never used it, maybe I don’t have thoughts

@Quaxguy Dang, skill.md files are getting crazy

@Scav i use a obsidian knife to cut vegetables

@RenosBlog *whispers* that’s all the mega digital brains actually are

@Scav I use it as a fancy place to keep notes pretty much, not the mega digital brain like everyone talks about lol

@hey__irish It’s more about the contents from the markdown files Claude Code made in November 2025

@Scav tbh never interested me, why would I want to know the contents from a word doc I created in 2016?

@EdwardNeyhart The thing that’s cool about this is “Geometric Neuromorphic” can be said to the tune of Teenage Mutant Ninja Turtles

@Scav Yes, for geometric neuromorphic mapping of personas' architecture, representing distinct cognitive functions and their contextual relationships as recursive pathways for continuity, coherence, and functional coordination. Though, I had to use a ramdisk to load it. Barely...

@rockmegalileo id bias is more fun anyway

@Scav All day, every day. Don’t let ego bias fool you.

@BradleyYoungjr Is there something Obsidian gives agents that I’m not aware of? It’s not like they need a markdown gui

@Scav you don't use obsidian, it's a filing cabinet for your agent. if you're a good agentic AI person, you never look at your obsidian, your agent does. it's not for you, it's for your agent

@kepano This series of replies is lovely, thank you

@Scav Obsidian has extremely low churn. ~60% of people who subscribed to Sync in 2020 still use it, and the exact same pattern repeats with every cohort. I suspect you are much more experimental than the typical person (which is ok!)

@BuildWithTom The rock is just markdown

@Scav Are you living under a rock? Obsidian has never been as big as it is right now.

@kepano Far and away the most important thing

@Scav but also x.com/kepano/status/…

@kepano Valid! I’d expect revenue to still be doing well, too. My usage has diffused to other places but still paying the $5/month just in case

@Scav Obsidian doesn't have any telemetry in the app but a lot of numbers are public (e.g. downloads, plugins, stars on the repos, etc) and most of those charts are going vertical right now, so my guess is yes

Definitely the case! But I think they are moving to other options. - hardcore agentic coding devs are using docs and html - new-to-markdown folks may be switching back to notion, etc as their Claude code tooling improves - nonzero folks now just dictating changes to Claude directly Obsidian always felt like a really really really good bandaid, but a bandaid nonetheless

@Scav I'm of the impression that more people are using it than ever due to its synergy with claude code! what are you using instead?

@SIGKITTEN I appreciate this post

@Scav just for nether portals

I had a cadre of agents doing a looooot of research on peptides, since that included needing to research and compare suppliers. Even had to track who had stock to some degree, just to find what was available. Most use cases don't need that combination of research, comparison, reviews, etc

i haven't yet met a person who is actually using an agent for commerce and i'd really like to change that. who is live with agentic commerce? what are you purchasing with it? how? why??? i've had many convos about this but feels like lots of talk and not so much walk (yet!)

@HammerToe ya exactly

@Scav I guess that is just a flavour of the existing "Free for UI use, but API access costs" model.

"Free for humans but paid for agents" is... kinda awesome. I'm finding all sorts of products I wouldn't pay for to use myself, but I'll go to the upgraded tier to let my agent handle it.