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Hilary Mason

@hilarymason.com
8K followers 1K following 612 posts

Co-founder & CEO of Hidden Door. I <3 cheeseburgers and making beautiful things. I know a thing or two about AI, but it's people who matter. I am interested in many things. NYC

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Reposted by Hilary Mason
Matt Novak @paleofuture.bsky.social · 13h
The White House accord on AI that was signed by all the big tech oligarchs today misspells United States as “Unites States.”
Document signed by Trump, Sundar Pichai
Google
Dario Amodei
Anthropic
Mark Zuckerberg
Meta

Greg Brockman
OpenAl

Elon Musk
XAI

Jensen Huang
nvidia “Unites States”
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Hilary Mason @hilarymason.com · 29/09/2026
"magestic horse" is the worst giphy search ever: giphy.com/search/mages... It was a genuine typo but I do NOT recommend.
giphy.com
Magestic Horse GIFs - Find & Share on GIPHY
GIPHY is the platform that animates your world. Find Magestic Horse GIFs, Clips, and Stickers that make your conversations more positive, more expressive, and more you.
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Hilary Mason @hilarymason.com · 27/09/2026
There is nothing inevitable about today's GenAI companies or market or product design or power dynamics. It's based on decisions, made implicitly and explicitly, by people. To imagine a better way we must realize how arbitrary all of this is. And who it serves.
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Hilary Mason @hilarymason.com · 26/09/2026
Overnight I trained a Jev-like model to output probability distributions over a set of 40 emoji, which runs in RAM at ~150ms per query. This was super easy and cost ~$10. It works pretty well on a weak training set, and with a day or two of work I could make this sing.
A terminal showing the output of the emoji jev-like model:

We launched the project!
   🎉 0.41  👏 0.23  🔥 0.15  ✨ 0.08  💪 0.07
   valence 3.92/4  intensity 1.98/4  | 154 ms

My cat is so cute and hates me right now
   😂 0.15  😏 0.13  🥹 0.12  ✨ 0.06  😆 0.05
   valence 2.34/4  intensity 1.85/4  | 140 ms

you stand in front of the dragon, triumphant
   ✨ 0.27  🔥 0.17  🎉 0.16  😍 0.09  😮 0.06
   valence 3.65/4  intensity 2.19/4  | 144 ms

why would you do this with emoji anyway?
   🤔 0.54  😏 0.17  🙄 0.06  😐 0.04  🧐 0.03
   valence 1.86/4  intensity 1.30/4  | 138 ms
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Hilary Mason @hilarymason.com · 24/09/2026
we put a bit of world-building magic on our homepage today hiddendoor.co
A screenshot of hiddendoor.co, showing a web page where you can Imagine A World Where.... and the example text says "the moon keeps secrets" but you can come type anything you want
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Hilary Mason @hilarymason.com · 24/09/2026
It definitely felt that way!
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Hilary Mason @hilarymason.com · 20/09/2026
Also at 40.
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Hilary Mason @hilarymason.com · 17/09/2026
Yesterday I flew LAS->NYC, noticed a white woman at the lounge with a sticker like the "I voted!" stickers but it said "I like ICE". Then she and her husband pushed aside wheelchairs to "preboard", announcing they were in first class Then they were rude to the flight attendants. The worst people.
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Hilary Mason @hilarymason.com · 16/09/2026
If we held people personally and criminally liable for the "autonomous" actions of the AI systems they create and deploy, I bet the risky behavior would evaporate overnight.
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Hilary Mason @hilarymason.com · 15/09/2026
It seems like there's a wave of cool advent calendar design (LEGO! jams! puzzles!), but do any companies make a version that isn't anchored on Christmas?
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Hilary Mason @hilarymason.com · 10/09/2026
This is well-said, and the heart of this conflict is what drives status in any professional role, and how that ties into professional identity.
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Hilary Mason @hilarymason.com · 08/09/2026
AI products are basically just software, but now it has moods.
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Reposted by Hilary Mason
Blaine @blaine.bsky.social · 19/08/2026
I'm pretty excited about this: we're launching a ヽ(^O^)ノ paid ⎝(^O^)ヽ virtual residency at New_ Public for folks with big ideas for making the internet a better place. Got a big idea? 💡✅ Care about people and communities? 💖✅ Please apply and share! newpublic.org/eir
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Hilary Mason @hilarymason.com · 19/08/2026
This thread helped me understand that the outrage about Anthropic's watermarking is the confluence of a lack of understanding of how LLMs (or any statistical language model) works and general angst at the current economics.
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Hilary Mason @hilarymason.com · 17/08/2026
Excellent work from 404. Respect for books is such a basic value that signals so many things about people.
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Hilary Mason @hilarymason.com · 12/08/2026
Has anyone curated a static download of the good bits of Wikipedia/YouTube/etc. for being able to learn or explore new things offline? We could call it "The Good Place".
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Reposted by Hilary Mason
tallestdude @coreyc.bsky.social · 10/08/2026
Happy Zero Cool Day to all who celebrate #hackers
Screenshot of the scene in the movie "Hackers" about Zero Cool crashing 1507 systems on Aug 10, 1988
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Hilary Mason @hilarymason.com · 02/08/2026
So much AI journalism feels like gaslighting if you know anything about machine learning pre-2020. Come. On.
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Reposted by Hilary Mason
Lindsay Beyerstein @beyerstein.bsky.social · 31/07/2026
I can't stress enough what a crisis this is. Trump's own intelligence agencies concluded that Iran attacked Minnesota's critical infrastructure and Trump is saying that it's Minnesota's own fault and denying it was Iran. The federal government won't defend blue states in a literal war.
nytimes.com
U.S. Sees Iran as Likely Behind Cyberattack on Minnesota Water Systems (Gift Article)
Investigators cautioned that the assessment was preliminary. There were no indications that any water supply had been rendered unsafe to drink.
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Hilary Mason @hilarymason.com · 31/07/2026
There are smart people working at these companies, and yet they keep launching deeply ill-considered products. It's such an obviously bad idea if you think about it for even a second. I'm fascinated by this.
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Hilary Mason @hilarymason.com · 30/07/2026
I have a headache today and I finally understand dark mode.
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Hilary Mason @hilarymason.com · 24/07/2026
Help me bluesky — What’s the easiest way for me, a plant dummy, to grow these herbs at home? I love cooking with fresh herbs and hate not trusting my produce.
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Hilary Mason @hilarymason.com · 10/07/2026
I miss being able to Google my more interesting typos to see how many people also made them
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Hilary Mason @hilarymason.com · 09/07/2026
Is opening a fire hydrant and playing in the street a specifically NYC thing? Or an American city thing? This is a genuine question, I am talking to a friend from the UK who has no context for it. :)
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Hilary Mason @hilarymason.com · 25/06/2026
I love our team @hiddendoor.co and we're all big readers -- we had so much fun sharing our favorite queer book recommendations and I hope y'all love them, too!
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Hilary Mason @hilarymason.com · 18/06/2026
It feels like no matter what I've accomplished in my career, my current most valuable talent is that if you locked me in a desert cave with a computer and some GPUs I could Iron Man the shit out of that and emerge with a functional LLM using just what's in my own head. And that's really funny.
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Reposted by Hilary Mason
Brent Toderian @brenttoderian.bsky.social · 14/06/2026
If walking costs you $1, we all pay $0.01. If biking costs you $1, we all pay $0.08. If bussing costs you $1, we all pay $1.50. If driving costs you $1, we all pay $9.20. Via study that still underestimates climate cost. This isn’t about choice. It’s about who pays for your choice. #citymakingmath
Detailed math as referenced in the post on “how much does your commute cost or save society?” Source is Discourse Media.
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Reposted by Hilary Mason
Hillary Monahan @hillarymonahan.bsky.social · 11/06/2026
Just because you're different doesn't mean you're not beautiful. Now go out there and shine you magnificent what the fuck.

[Image is a fanged tentacle monster]
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Hilary Mason @hilarymason.com · 11/06/2026
Boss move.
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Reposted by Hilary Mason
Rabbi Danya Ruttenberg @theradr.bsky.social · 07/06/2026
As Archbishop Tutu said about apartheid with regards to the Truth and Reconciliation hearings: "Those who claimed they did not know cannot very well say so now. They know.” Except we have internet. We have social media. People know now. We know. We cannot claim otherwise.
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Hilary Mason @hilarymason.com · 07/06/2026
I’m really having trouble imagining anyone at any point in history saying the word “knickerbocker” with a straight face, it just has such a funny mouthfeel
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Reposted by Hilary Mason
Evan Greer @evangreer.bsky.social · 05/06/2026
BREAKING: the Massachusetts House just passed one of the best data privacy bills in the country. It includes a total ban on the sale of precise location data and includes a private right of action allowing people to sue Big Tech over data abuses. HUGE WIN! But there’s more work to do 🧵
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Hilary Mason @hilarymason.com · 04/06/2026
This is really cool. I've been super into strandbeests since I discovered the Gakken kit (which was many, many years ago): www.japantrendshop.com/theo-jansen-...
japantrendshop.com
Theo Jansen Mini Strandbeest Model by Gakken
Theo Jansen Mini Strandbeest Model by Gakken - Discover the wonders of Dutch kinetic sculptor Theo Jansen with this new model kit from Gakken and their Otona no Kagaku (Adult Science) series. The Mini...
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Reposted by Hilary Mason
Second Ave. Sagas @2avesag.as · 04/06/2026
Good story on the Knicks' subway entrance, the city's current spirit animal. www.fastcompany.com/91553148/kni...
fastcompany.com
The perfect Knicks orange? It’s actually carrot
Pantone was a bust, so two MTA employees found a perfect color match in the most New York way possible: at a 24-hour hardware store.
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Reposted by Hilary Mason
Mike Masnick @masnick.com · 03/06/2026
I spent more time on this piece than almost anything else I've written in the last year. Building a better, more decentralized internet is an inherent necessity if you want a functioning democracy. I hope people find it a useful encapsulation of where we're at. www.liberalism.org/p/enshittifi...
liberalism.org
Enshittification, Despotification, and the Open Internet
It’s not about whether technology is inherently good or bad, liberating or oppressive. Architecture shapes incentives; incentives shape outcomes.
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Hilary Mason @hilarymason.com · 01/06/2026
This is a _hilarious_ self-own.
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Hilary Mason @hilarymason.com · 01/06/2026
Good morning, Brooklyn, it’s sidewalk chalk season and the kids are awesome.
Chalk letters on the sidewalk that spell SPRED JOYBubble chalk letters that spell You Are LovedChalk on the sidewalk that says “I hope you have a great day”
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Hilary Mason @hilarymason.com · 31/05/2026
A beautiful graduation speech. I hope the students took heart.
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Reposted by Hilary Mason
Daniel Lowd @dlowd.com · 23/05/2026
Using Altas, I've been working with @marylowd.bsky.social to turn her Otters In Space books into a playable RPG. Soon you will be able to visit an otter space station, join a lovable crew of otter space pirates, and find out where all the missing tuna has gone!
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Hilary Mason @hilarymason.com · 22/05/2026
We launched Atlas, a new experience that lets anyone with an idea for a story world make it a playable narrative RPG in as little as 5-15 minutes. Are you a daydreamer, forever DM, writer, or just full of weird ideas? Atlas is for you! Check it out today at hiddendoor.co/create
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Hilary Mason @hilarymason.com · 18/05/2026
This is so well-written.
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Hilary Mason @hilarymason.com · 15/05/2026
The 2007 Shake Shack webcam, all grown up.
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Hilary Mason @hilarymason.com · 15/05/2026
Hey Slack, what "AI abilities"? What are these features for? Why do I want them? How much are you going to try to charge me for these unnamed capabilities that I probably won't use? I am a customer and I have questions.
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Reposted by Hilary Mason
Jessica Valenti @jessicavalenti.bsky.social · 14/05/2026
You're about to see headlines saying abortion pills can't be shipped. THAT IS NOT TRUE You can still get abortion pills by mail to all fifty states. Some providers will switch to miso-only, some will ship both mife & miso. I got into all of this when the federal court ruling first dropped:
jessica.substack.com
The Biggest Attack on Abortion Since the End of Roe
A federal court wants to end mifepristone by mail—it's not happening
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Reposted by Hilary Mason
Ash @regisphone.bsky.social · 11/05/2026
All of New York state, not just the city, and also applies to anyone with a kid under 6
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Hilary Mason @hilarymason.com · 02/05/2026
Hey NYC! Please tell me we have already given this Bryant Park Lawnmower Roomba a cute & clever name. Patience & Lawnitude? Croton Clipper? Grassbuster? Help me out, New York. We need some (gender neutral) Dad Joke energy.
A large amount of lawn with a robot lawnmower in the background and a few pigeons nearby. Behind the lawn are a bunch of people enjoying the park. The buildings of 40th St are visible behind the park.
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Reposted by Hilary Mason
Hidden Door @hiddendoor.co · 01/05/2026
ICYMI, @hilarymason.com spoke at dev/ai/nyc! You can catch up on the @automattic.com YouTube channel to see our live demo (including a sneak preview of a brand-new platform for story creators) and hear Hilary's conversation with @jesse.blog. Watch here: www.youtube.com/watch?v=F5l1Pukl7Eo
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Hilary Mason @hilarymason.com · 28/04/2026
@catehstn.bsky.social Raccoons!
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Hilary Mason @hilarymason.com · 27/04/2026
If I have never quite liked rhubarb, what are some recipes or dishes I should try this season? I want to like it!
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Hilary Mason @hilarymason.com · 23/04/2026
Pretty sure I'm officially an Old Man now, I had a pack of trail mix as a snack and actually liked it.
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