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Matt Keeter

@mattkeeter.com
3.7K followers 1.6K following 2.7K posts

✨ Weird CAD and graphics research ⚙️ Embedded software and Rust 🌎 Cambridge, MA 🏠 mattkeeter.com

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Matt Keeter @mattkeeter.com · 4h
you can run your agents on crush they're literally on herdr you can probably find them on weeno you can poob it
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Matt Keeter @mattkeeter.com · 4h
one of my finest moments on twitter was ratioing the official HMC account by quoting the mission statement at them (after they did a promotional post for a alumni's cryptocurrency startup)
Screenshot of Twitter posts.  I have posted

"[HMC] seeks to educate engineers, scientists, and mathematicians well versed in all of these areas and in the humanities, social sciences and the arts so that they may assume leadership in their fields with a clear understanding of the impact of their work on society"

in response to the Harvey Mudd College account posting

"IMPACTFUL ALUMNI: Read how Mudd entrepreneurs Tom Hsieh '93 and Josh Jones '98 are partnering on the "next generation of digital rewards." ow.ly/xbgw50I6sUS"
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Matt Keeter @mattkeeter.com · 5h
OH NO HE WENT TO MY TINY ENGINEERING UNDERGRAD
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Matt Keeter @mattkeeter.com · 5h
I don't have any crate recommendations, but you should check out the MeshGit paper: cse.taylor.edu/~jdenning/pr... (Despite the name, it's about mesh diffing and has no relation to the git VCS. This annoyed me at the time, but I remember the paper title years later, so who's to say if it's bad...)
cse.taylor.edu
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Matt Keeter @mattkeeter.com · 5h
oh boy here we go
Screenshot of Hacker News, looking at the comments for an article titled

Halfspace experimental IDE for solid modeling with distance fields (mattkeeter.com)
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Matt Keeter @mattkeeter.com · 15h
No one ever asks "How is Boris Mann?" 😢
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Matt Keeter @mattkeeter.com · 18h
Typical OpenAI agent during its training run:
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Matt Keeter @mattkeeter.com · 18h
Gotta add WebGPU into the mix to really light up that silicon!
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Matt Keeter @mattkeeter.com · 30/09/2026
median Cambridge homeowner politics
Picture of a wooden fence outside a single-family home.  On one side of the fence is a "Black Lives Matter" sign, somewhat deface by spraypaint.  On the other side of the fence is a "Pause the Upzoning" campaign sign.
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Matt Keeter @mattkeeter.com · 28/09/2026
I’m on paternity leave and don’t know what day it is, don’t do this to me Jerry
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Matt Keeter @mattkeeter.com · 28/09/2026
honestly I would also accept “more fun than scad (derogatory)”
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Matt Keeter @mattkeeter.com · 28/09/2026
libfive / Studio still has better meshing, so I'm not sure if you would want to at this point. Scheme → Rhai is probably something that you could hit with an LLM, but breaking a model into logically distinct pieces (the whole point of the IDE) isn't quite as obvious...
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Matt Keeter @mattkeeter.com · 28/09/2026
"Cross-platform" includes the web as a first-class target; you can see a demo at www.mattkeeter.com/projects/hal... (mobile Safari has issues with 2D compositing, but if you're using a phone you're gonna have a bad time anyways)
mattkeeter.com
Halfspace
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Matt Keeter @mattkeeter.com · 28/09/2026
hi friends I'm very excited to announce Halfspace, my experimental cross-platform IDE for solid modeling with distance fields! This has been in progress since midway through last year, and it's finally "done enough" to make it more public.
mattkeeter.com
Halfspace
An IDE for solid modelling with distance fields
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Matt Keeter @mattkeeter.com · 28/09/2026
There’s also a big difference between “public-facing text with your name attached” (which is where we started) and “you’re voluntarily receiving information from your agent”!
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Matt Keeter @mattkeeter.com · 28/09/2026
Understandable, hopefully this came across as friendly teasing rather than mean-spirited!
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Matt Keeter @mattkeeter.com · 28/09/2026
I love that Bluesky has made STYLE.md, RITUALS.md, and claudisms.md into links (and kinda shocked that no one has registered the last one yet)
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Matt Keeter @mattkeeter.com · 28/09/2026
Picture of a gymnast doing an elaborate routine captioned "read claudisms.md, use a prose linter, positive enforced rules".  Below, another gymnast walks across the floor and raises her arms, captioned "do the writing yourself"
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Matt Keeter @mattkeeter.com · 28/09/2026
how do you feel about the American Football cover?
youtube.com
American Football - Fade Into You [OFFICIAL MUSIC VIDEO]
YouTube video by American Football
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Matt Keeter @mattkeeter.com · 28/09/2026
many such cases
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Matt Keeter @mattkeeter.com · 28/09/2026
The other fun consequence (time to make AI Knowers mad, too!) is that you probably shouldn't spend excessive amounts of time conversing with models – it's easy for their style to rub off on you and lead to false positives in subsequent work, even if it's entirely human-authored!
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Matt Keeter @mattkeeter.com · 28/09/2026
absolutely not, keyword-searching bot; straight to jail
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Matt Keeter @mattkeeter.com · 28/09/2026
My vibe check agrees – most of it feels very human written, and then there are scattered chunks of Perfectly Smooth Extruded Text Content.
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Matt Keeter @mattkeeter.com · 28/09/2026
It sucks for people that naturally write like that, but if you wanna avoid getting killfiled by AI Knowers, you've gotta (1) know how LLMs write and (2) make sure that your style is unimpeachably different. Did you like spicing up your writing with short-lived metaphors? Sorry, that's now verboten!
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Matt Keeter @mattkeeter.com · 28/09/2026
Yeah, the rest of the article feels human and not perfectly LLM-smooth, but there were a few phrases that stood out like sore thumbs – maybe I’m overturned and this is a false positive 🤷🏻
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Matt Keeter @mattkeeter.com · 28/09/2026
“Modern influence operations do not break in at all. They are already inside, sitting in the feed between a cousin's wedding album and a meme about gas prices, dressed exactly like everything else there.” [touching the ground pensively] Claude was here, these are its tracks
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Matt Keeter @mattkeeter.com · 27/09/2026
hey, at least it's a net negative in LoC!
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Matt Keeter @mattkeeter.com · 27/09/2026
Reminds me of Trina’s Starlite Lounge, our local dive bar (right across the Somerville border)
Picture of a bar exterior, with “Starlite lounge” written on the awning and yellow stars painted on a black exterior. A Miller High Life sign and rainbow flag complete the vibes
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Matt Keeter @mattkeeter.com · 27/09/2026
youtube.com
Patton (3/5) Movie CLIP - Rommel, You Magnificent Bastard (1970) HD
YouTube video by Movieclips
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Matt Keeter @mattkeeter.com · 27/09/2026
sorry sorry I'm trying to delete it
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Matt Keeter @mattkeeter.com · 27/09/2026
See also: Aella writing a whole guide on using sex to extract money from lonely men, then showing up and being treated as a good-faith actor as she took over the rationalist community!
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Matt Keeter @mattkeeter.com · 26/09/2026
Looking strong at 5 mins
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Matt Keeter @mattkeeter.com · 26/09/2026
House of Leaves (2000)
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Matt Keeter @mattkeeter.com · 25/09/2026
took some pictures on the bay
A suspension bridge in front of a blue sky. A bird flies below the bridge; the moons also lurks underneath the span.The SF skyline seen from the harborAlcatraz, seen from the water with a dramatic red/orange/blue sky.The Bay Bridge, with an incredible blue/orange sunset. A boat’s wake is visible in the foreground.
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Matt Keeter @mattkeeter.com · 25/09/2026
making the Cape part of Long Island is incredible bait
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Matt Keeter @mattkeeter.com · 24/09/2026
the real danger is those charismatic bard actors
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Matt Keeter @mattkeeter.com · 23/09/2026
just snap off another blade on the opposite side, problem solved
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Matt Keeter @mattkeeter.com · 23/09/2026
“Minus zero” implies that Godzilla uses floating-point values for versions, so an R rating is entirely appropriate.
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Matt Keeter @mattkeeter.com · 22/09/2026
<dark souls font> PRIORS UPDATED </dark souls font>
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Matt Keeter @mattkeeter.com · 22/09/2026
I'm sorry, but I don't trust any document authored by (and I quote) "Tianyang Liu, GPT-5.5, Claude 4.8 Opus". The text also reeks of LLM-isms!
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Matt Keeter @mattkeeter.com · 22/09/2026
I made this for @davidcrespo.bsky.social when he last dove into the argument mines:
oh boy this is hard one.

It's an edit of the Sweet Bro And Hella Jeff comic from MS Paint Adventures, reading 'I warned you about KATHRYN BRO!!! I TOLD YOU DOG'.  Then a man is falling down the stairs and saying "it keeps happening".  His profile picture is that of David Crespo, and he's surrounded by multiple copies of Kathryn's profile picture.
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Matt Keeter @mattkeeter.com · 21/09/2026
I am in favor of crushing* poverty, and not in favor of crushing** poverty. *verb **adjective
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Reposted by Matt Keeter
rain 🌦️ @sunshowers.io · 21/09/2026
I know the meme is that software engineering isn't like real engineering, but (1) you can start taking your job seriously today! and (2) engineers in most other fields would KILL for the kinds of advanced version control we take for granted
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Matt Keeter @mattkeeter.com · 20/09/2026
if you understand this reference, you are entitled to compensation, and lawyers are standing by for your call
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Matt Keeter @mattkeeter.com · 20/09/2026
NOBODY puts the nun in a box!
Screenshot of Fire Emblem, featuring a character named Anatolia, dressed as a nun, wielding a gun.  I don't know why they gave the nuns guns.
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Matt Keeter @mattkeeter.com · 20/09/2026
“loobean” was already taken
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Matt Keeter @mattkeeter.com · 20/09/2026
oof ouchie my fingers
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Matt Keeter @mattkeeter.com · 20/09/2026
heck yeah, I'm not as much of a 2D graphics guy but graphics + weird compiler stuff is very relevant to my interest
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Matt Keeter @mattkeeter.com · 20/09/2026
hi guys
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Matt Keeter @mattkeeter.com · 20/09/2026
oh hey neat
Screenshot of DMs with the Middle-Earth labeler, which reads

Bot:
By the narrowest of margins, your people, the Orcs of the Misty Mountains, have held firm against ⚔️ the proud legions of Gondor by a wind-scoured ridge.

The victory is yours.

Picking through the battle's wreckage, you spot a weathered pack concealed in some tall grass. Reply SEARCH to see what's inside.

Me: Search

Bot:
🎲 You rolled a 19 — Fortune smiles upon you.

✨ LEGENDARY FIND!

You found: a Silmaril ✨
⚔️ Strength: +28
🍀 Fortune: +4

You are currently an Orc of Moria 🗡️ with a poisoned blade 🗡️
⚔️ Strength: +25
🍀 Fortune: -1

Reply STAY to remain an Orc of Moria 🗡️ with a poisoned blade 🗡️, or SWAP to become an Orc of Moria 🗡️ with a Silmaril ✨

Me: Swap

Bot: You swap your gear.  You are now an Orc of Moria 🗡️ with a Silmaril ✨
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