product & creative director | did some @ Apple, Meta | building collective live brAIns for startups

Joined March 2022
124 Photos and videos
this place was my working space, everyday, for years two millions documents the atmosphere was kind of surreal... Paris. built in 1850 for open knowledge
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just discovered a new way to ship prototypes for some friends: 1. create your design system as a .md 2. one file per colour, typo, CTAs, etc 3. one .md to explain what's the product 4. hand over to Claude Design. proto done 5. export the html, refactor with CC rince, reuse 😊
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made me laugh for a long minute
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11M ... what if @bcherny we could export all our convos from Claude Desktop as md files, so we can create a wiki? I know sounds crazy, but I can't stop thinking of it
Wow, this tweet went very viral! I wanted share a possibly slightly improved version of the tweet in an "idea file". The idea of the idea file is that in this era of LLM agents, there is less of a point/need of sharing the specific code/app, you just share the idea, then the other person's agent customizes & builds it for your specific needs. So here's the idea in a gist format: gist.github.com/karpathy/442… You can give this to your agent and it can build you your own LLM wiki and guide you on how to use it etc. It's intentionally kept a little bit abstract/vague because there are so many directions to take this in. And ofc, people can adjust the idea or contribute their own in the Discussion which is cool.
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just a product idea @nikitabier Love the OP tag when a post writer answers in a feed. Would love to see it here, cuz sometimes I don’t remember who was the original OP
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write the story, sell it, then build it
the most underrated hire right now is a great product person. when i say product person i'm def not talking about a product manager. perhaps i think there has to be somewhat of a new role. i don't have a good name for it yet but maybe something like "product thinker".. someone with an intuitive grasp of the product as it exists, where it's soft, where it sings, & how to iterate it toward something even sharper. in some sense, this person has to cohesively hold in their head where this product should be 2 years from now & work backwards from that. i say this cuz when building was hard, engineering was the bottleneck & the status hierarchy often reflected that. building is no longer hard. which means the variance in outcomes has shifted almost entirely to judgment on what to build, how to sequence it, & how to talk about it. & the story matters as much as the thing. internally, it organizes the team around a shared model of why. externally, it shapes the interpretive frame users bring to their first experience. you can't retrofit narrative onto a product & expect it to land, it has to be load bearing from the start. the rarest version of this person sits at the intersection of culture & deep technology. someone genuinely bilingual. they know what's technically possible & they know which cultural currents are real vs. ephemeral. that combo is what separates products that feel inevitable from products that feel assembled. before ppl clap back with this person has always been valuable, i know.. i am just saying now they might be the most *important* person in the room. their value compounds like never before.
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What Mo is describing is we’ve been developing our hypothalamus for years by doing something that was an effort. You may know the London Black Cabs. Their training is to memorise every streets of London. They grew their hypo. The minute you give them a GPS, they lost memories and the hypo decrease. But your Varin is so so flexible that you can you regain your superior skills. Would you want, with these lazy efforts that AI offers you? Would you?
Mar 7
I was a 10x engineer. Now I'm useless.
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to all solos, this is basically you hiring a pro designer in your favourite IDE. More than happy to see how you’re pumping your sites. GG on the launch 😍
Mar 6
Today, we're releasing shadcn/cli v4. It packs a ton of features: shadcn/skills, presets, dry-run, monorepo and more. If you're using shadcn/ui with coding agents or need better control over the defaults, this is for you. Here's everything new:
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started with research, then build an amazing product, then offers an API! This is 2026 playbook. GG
Introducing @QuiverAI, a new AI lab and product company focused on frontier vector design. We’ve raised an $8.3M seed round led by @a16z, with support from amazing angels and investors. Our first model, Arrow-1.0, generates SVGs from images and text. It’s available now in public beta at app.quiver.ai
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31 Oct 2025
today I’m excited that you can now use @getstobo in beta with our TestFlight on Mac here’s a special Halloween teaser 👻 Stobo Studio allows you to make apps for Vision Pro, in minutes
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29 Oct 2025
I've been obcessed by shaders as a designer, so I made my own iOS app using @cursor_ai and Xcode... I'm not a coder at all
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21 Oct 2025
that's 👇very very smart
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17 Oct 2025
Design, code, 3D print, father of the year! Live your work Rafa
13 Oct 2025
My son wants us to “be Darth Vader for Halloween”, so I’ve been working nights on our costumes and having the time of my life ❤️
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8 Oct 2025
This is attention to details on Stobo Vision Pro
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7 Oct 2025
Sneak peak of Stobo on Mac… Full SwiftUI with shaders
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7 Oct 2025
and yes, we do glass effects
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2 Oct 2025
sometimes designing with code feels liberating @cursor_ai some trials and errors with @paper: 90 mins later got pilot.stobo.app/ online. thx to @ericzakariasson @kashyechuri

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18 Sep 2025
Remember that Jobs, for the infamous iPhone keynote had: 1. An ATT truck behind the venue for the full bar network 2. He swap three iPhones like a magician’s trick to demo three different things 3. He and his team trained in situ for days
Regarding Meta's "demo fails." Several of the demos failed tonight. I feel so bad for the teams behind these products. A failure like that, in front of the world, is devastating. I have seen thousands of demos in my life, many in my home (Siri, Insta360, and Matic Robots were launched in my home). I have seen many demo failures, too. This was unusual and hard to recover from. Siri, for instance, failed horribly on that first demo and they had to come back and do it again after they fixed a bunch of errors I found. The Wifi failed because when you have 1,000 people around you the wifi bandwidth gets saturated. Preventing that would have taken a very expert radio team. It's possible to do, but you have to have a team that really understands wifi. And that's very hard to test for in advance. When I worked in conferences I knew of only one team in the world that I would trust doing that. The AI failing sounds like it didn't hear, or understand him properly, and the presenter wasn't expert enough with the device, or the AI, to try something else and get it on track. It does show that AI there is still not very good at hearing and needs more work, which we all know. The AI that Meta has isn't state of the art yet and in a separate demo Zuckerberg went to video tape. I do feel sorry for them. Left a bad taste for sure in a day when things should have rocked. And were otherwise going well, which is why I posted that Zuckerberg was knocking it out of the park. Then the demos started failing. It's not the first time Boz's stuff failed. I thought he should have gotten fired a couple of years ago when they had a Super Bowl commercial and couldn't get 15,000 people into their VR experience. Just a mess demoing things. That really demonstrated a lack of investment and testing in 3D systems that wounded VR for years, in my opinion. I was back stage when Microsoft launched Access 1.0. Their demo failed horribly. Turned out a product demoed before them corrupted the database and they couldn't figure out why it wasn't working on stage. The team was in tears. So many people worked for so long on these products that I can't imagine anyone is having fun tonight there. That all said, I'm excited to try this product out and am buying one. The product will stand, or fail, on its own and I'll let you know then what my experiences are with them. In five years the demo will be a trivia question and won't affect whether anyone buys or rejects them. But, damn, this is why Apple records all its demos now and doesn't try to do live demos. Reducing risk of failure, but makes them quite a bit more boring. I hated that Apple does that, but tonight I see that Apple won't be likely to go to live demos anytime soon again. There is a deeper problem, too. Wearing the displays is FAR more amazing than comes across on a video on X or Facebook. None of us should make up our minds about any of this stuff without giving it a good hour-long try ourselves.
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16 Sep 2025
808 days in, designing for visionOS What I learned, what was challenging, what I still don't know... A love letter to my favourite OS. Day 1: July 2023 WWDC23, had to digest an entire new OS, design paradigm, spatial what?, what is AR nowadays, what is passthrough, why it's not VR but Spatial, what is transparency, scale, volume, floating font. The most difficult part was not being able at first to rely on years of experience. I never really enjoyed the clunky XR, AR on iPhone was not something you could make a living from. And today, back in July 23, the fruity company launched a high-res screen computer, we need to design for it. August 23 Ok, ok, I think I can design for this thing. visionOS 1 is quite a wild beast, my dev comrade still swearing a lot of French words, I do too, because I have no clue how to make Figma look like SwiftUI views. Even with Apple's Figma template, as always, you have no clue how it works. I had to slow down WWDC's videos, I tried to grasp anything, any ideas. Gods were not sitting at the design table, we had no device to test our ideas, just an Xcode simulator and a lot of guesses. Painful! Apple visionOS Labs We arrived the day before in London. Excitement at its peak, the promise was to fianally touch it, giving us 5 hours to play. It's difficult to describe how I felt that day, because first, I was back at Apple. I met some old friends, discovered Battersea office. So grandiose. After a short intro, we came to a meeting room, with 12 other devs. As we sat, there was this lovely wooden tray with our own AVP. The electricity was palpable in the room. The Vision Pro was waiting for me. First Impressions It's just a detail, a tiny little detail I started with: the computer made its infamous boing sound, then a white Apple logo appeared in front of my eyes in the meeting room. It was so crisp, so perfect I could touch it. Then the springboard, floating but perfectly designed. BTW, they won a Black Pencil for that design! Designer's Frustrations First question I asked: "Can we take screenshots?", guess the answer. So everything I was seeing, experiencing couldn't be recorded. There were so many details, the curves, glass effects, the colours and textures. Music app was so cool, Photos was also very very well designed. There was nothing I could copy/paste to Figma for later analysis. Analog Tech I knew it could happen. I had a backup plan, a notebook and few pencils. So I spent my first hour drawing, annotating, trying to explain to my future me back home, how it works, how these tiny interactions play out. It was so different from the simulator, it was live and absolutely gorgeous. A Small Bunch of Crazy Ones We spent the afternoon chatting with other devs. We shared ideas and early findings. We had to rush to test our apps, some ideas that were worse when tested on device. I met a lot of really great people there. Even as a designer (and I think I was the only one that day) the dev community around this device was just the most excited I'd ever seen since iOS 1. One Lab, Then 7 Yes, we were lucky. The way Florent and I pushed the visionOS boundaries made some impact. At one lab we had senior Apple VPs looking at one of our demos, asking how the heck we managed to do that kind of SharePlay experience. Very proud moment. We met our future clients there. We became friends with a lot of cool devs, hey @jordibruin Feb 24 Launch In October 23 we met this team who had not one but two devices in their offices. Yes, very rare, and almost crazy to think they had two. So we built our first App Store app for them. Apple was very discreet about any launch date, but we felt it might be beginning of 24. So we rushed the development cycle, spending hours in a locked room with a secured vault. One device each few hacks, haha! Can't really tell you, but the designer in me was happy. We launched Swan Dive, first 360 arty videos. Florent had to invent an MV-HEVC encoder and a player, lol. Still used by tons of AVP people. Respect. Fast Forward y 2024 We all learned a lot with this new OS. As a designer, I was not happy with Apple's Figma template, so I built my own. 150h of craft, had to hire a design system designer to help me clean it. I still use it today. I also helped a lot of teams, designed some cool apps for the Vision Pro, and hit a massive wall. Learning Curve Once you understand how this OS behaves, it was time to push it. For example, all visionOS apps look the same. You have a great glassy effect, but no personalisation. Once your app is launched, there's a lack of branding. Basically, after opening 6-7 apps around me, I couldn't tell who was who. So I had to hack it somehow. I found TabBar icons could be branded. You could add background blurs, like in Music, etc. 808 Days In My little contribution to this ecosystem was to make a few cool apps, learned spatial computing design and most importantly, made some friends. Do I regret it? It's not a strong NO. I do like the OS, the potential, the free space as a canvas. The only thing that is difficult for most people I met, from indies, clients, agencies, filmmakers is the barriers to content creation. It's super costly, even with our new tools, like the URSA Blackmagic cam. The AVP is a pixel-perfect beast, anything that is not high-res looks instantly wrong. You want to make a 180 immersive video, that's not what you do with an iPhone. You want some 3D artifacts, this is not a simple USDZ that you bought for $24. That is my daily frustration. Design, Code & Content TBH, I haven't seen yet the quality on Vision Pro's apps the way we can experience some of them on iOS. There's a lack of interest from the design community for this spatial computer. I can understand, I feel the pain. In fact, I think there's still a lot of opportunities for young talented designers to flex their muscles on spatial design. I can help, just message me. Code is kind of easy, that's mainly SwiftUI. The logic from iOS applies well, with some tweaks around volumes, environments. But content is the true wall. You can fake it to demo things, but it will be THE problem to solve. You're Still Here? Well, it's just a love letter to the whole visionOS internal Apple team, really. To the dev community who pushed amazing hacks and experiences every day. To the 3D geniuses we work with on Neom (👋 Gilles), to the video producers, sound designers, composers... Last. I won't do any more client apps. I'm done. We have better ideas, building the shovels for the next generation of spatial explorers. Thanks for reading this piece.
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