Eric Seidel (@_eseidel) profile picture

Leading @shorebirddev. 🚀 Founded @flutterdev, former Eng. Dir @google, previously @googlechrome, @webkit. @ycombinator S06.

Menlo Park, CA
Joined January 2007
Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)Photo by Eric Seidel (@_eseidel)
building your own tooling is a great way to figure out what the frontier looks like. Existing common tools are way out of date. But yeah. Don’t let it consume you.
Learning of the day: do not, under any circumstances, build dev tooling for yourself. Things are changing too fast and it becomes an all-consuming distraction. Just use out of the box stuff and live with it.
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Eric Seidel retweeted
In lieu of flowers, memorial contributions may be made to: Johns Hopkins Alzheimer’s Disease Research Center Fund    alzresearch.org/giving/ Alzheimer’s Foundation of America Caregiver Resources     alzfdn.org/donate/ Photo Credit: Tommy Garcia
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Good building blocks you say? I agree! #flutter 💙
AI may well be able to write massive software projects “from scratch”, but that almost certainly isn’t the fastest / highest performance / highest security / most token efficient way to do things. Good building blocks matter. In addition to RL’ing the agents on final task loss, we should try to get them to regularize the building blocks as well. What would the standard library look like that makes the agents most effective? It is likely at the limit that it turns out to be some alien organization of code, but given the existing human-bias in training, I bet that in the near term it would be lovely code that old programmers would appreciate. I suspect the same could be said for mathematics, but that is out of my lane.
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Your AI-authored outreach emails make me more likely to block you. No, you're not following our blog that closely that you know exactly what we do...
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With all the recent security disclosures, including cert compromises, we felt it was important to increase the on-by-default security even further. I want you and your users to feel and be safe. 🔒
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It's amazing to see our vision for Flutter of "never say no to your designer" taken to another level with all the recent 3d work. 🎉
Been building a theme park app with a tiny lantern spirit living in the header. He eats the notifications. If you pet him long enough he falls asleep. :D IMO this is what Flutter is particularly good at. You can control literally everything about how your widgets render and behave. Material and Cupertino are there if you want them, but nothing forces you into a boring native look. You build your design system once and it runs exactly the same on every platform, so you can be as bold and weird with it as you want. Flutter Scene is a complete 3D game engine for Flutter. It's powered by Impeller and Flutter GPU, and it runs on mobile, desktop, and web using nothing but Flutter's built-in SDK features. It's built to help you make any interaction you can imagine for your app real.
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Been building a theme park app with a tiny lantern spirit living in the header. He eats the notifications. If you pet him long enough he falls asleep. :D IMO this is what Flutter is particularly good at. You can control literally everything about how your widgets render and behave. Material and Cupertino are there if you want them, but nothing forces you into a boring native look. You build your design system once and it runs exactly the same on every platform, so you can be as bold and weird with it as you want. Flutter Scene is a complete 3D game engine for Flutter. It's powered by Impeller and Flutter GPU, and it runs on mobile, desktop, and web using nothing but Flutter's built-in SDK features. It's built to help you make any interaction you can imagine for your app real.
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Eric Seidel retweeted
Build broken by a package the night before release? 📦 @AbhishekDoshi26 shares a field guide: pin, fork, fix upstream or walk away. flutterCon India, Bengaluru. eu1.hubs.ly/H0zbTnd0 #flutterConIndia26 #Flutter
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Eric Seidel retweeted
AI agents porting your app to multiple native codebases isn't a flex, it's a future maintenance nightmare. Watch my nextapp keynote to see why Flutter’s single source of truth is still the ultimate cheat code 💙 youtu.be/Zz4ku_bmxG8?si=6HXD…
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Jagged intelligence is so weird.
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Gemini 4 Argon + @FlutterDev is cracked. @antigravity built this car infotainment screen and driver cluster with Flutter Scene in a day. It's all one Flutter app. :) The map uses real OpenStreetMap buildings in downtown Boston and a live route from OSRM. The x-ray chassis uses a custom material, and the brake discs glow as the car brakes. The car is a glTF model with working doors, hood, hatch, headlights, and paint options. The parking screen is a mockup of a 360 surround camera view. No embedded engine, no native map SDK, no platform views, just vanilla Flutter with Impeller and built-in SDK features: Flutter GPU. 3D rendered by Flutter Scene, a complete 3D game engine for Flutter. The app is 14,000 lines of Dart, with a center screen, a driver cluster, and a panoramic view of both. No subscriptions, no paid seats, no royalties. Free and open source, forever. Flutter can just do it all.
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There is no excuse for there to be any friction with your software in 2026. Software should be personal, and perfect. It costs nothing to make, only costs to own/maintain.
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Eric Seidel retweeted
Let’s get @FlutterconWorld started!! @twerske out here keynoting #FlutterDev
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Eric Seidel retweeted
Flutter is a 3D engine now. 99 seconds from my Flutter & Friends talk. Everything in the cut is rendered by Flutter on the stable channel, on Impeller and Flutter GPU. No platform views, no native textures piped in from another engine, no custom fork. The engine is Flutter Scene, a complete 3D game engine for Flutter. Complete means graphics, physics, audio, networking, an editor, and tools for AI coding agents, in one open source project. It runs on macOS, Linux, Windows, iOS, Android, web, and custom embedders. It scales down to a single model in a widget and up to full games, and dozens of contributors have landed work in it this year. A scene is a widget. Put it in a Column, stack UI over it, or draw it transparent over the UI so physics objects cast shadows on your buttons. And hot reload works on the scene itself. Change a light or a material in Dart and it updates in place. The full talk covers materials, lighting, the editor, and agent skills. Link in the reply. :)
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Eric Seidel retweeted
We've landed in Berlin! 🇩🇪🐦 The Shorebird team is here and ready for FlutterCon Berlin, starting tomorrow. Find us at Booth 56 (Hall B, Level 2) and come say hi 👋 Who else is in town? Drop a 🙋 below! #FlutterCon #nextapp26 #Flutter
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We need to find more "balance bike equivalents" for other skills (e.g. learning to swim). They're such a huge improvement in how we learn to bike.
One thing I'm thrilled to see FINALLY taking off in the states is balance bikes If a kid starts on a balance bike instead of training wheels, they learn to ride a real bike way faster than with training wheels Part of the reason for this is obvious: you learn to actually balance instead of having the training wheels do that for you The other reason though is something called countersteering, which is one of those skills so subconscious it's basically impossible to verbally teach You need to learn how to countersteer in order to reliably turn without falling, which is where a large part of the frustration comes in when kids switch from training wheels to real bikes Balance bikes teach all of this naturally, and pedaling is one of the easiest skills to add Training wheels are archaic, ditch them!
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Good riddance Webflow.
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Legacy SHOREBIRD_TOKENs turned off tonight (midnight GMT Oct 1st), per our earlier announcements. Only a minority of users are affected. Greater visibility/control over your logins once you upgrade. Reach out to me if you have any trouble updating: shorebird.dev/blog/migrate-t…
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