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Joe Fabisevich :verified:

mergesort@macaw.social

<p>Director of AI Product Engineering @ Pursuit.org. I used to work on making Twitter a bit healthier, then that all went to hell. Now I make puns, indie apps <span class="h-card" translate="no"><a href="https://threads.net/@plinky.app/" class="u-url mention">@<span>plinky.app</span></a></span>, and teach @ build.ms.</p><p>Born and raised New Yorker, just trying to do a little good and be the friend you made along the way. 🐶 🍕 🐱</p><p>Formerly <span class="h-card" translate="no"><a href="https://macaw.social/@mergesort" class="u-url mention">@<span>mergesort</span></a></span> on Twitter.</p>

Posts

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    I don’t say this lightly: this approach is clearly the future of software development. I have a blog post brewing that touches on the subject, but fuzz testing and formal verification at scale will make all software an order of magnitude better, safer, and more reliable. https://www.anthropic.com/research/formal-verification

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    In a just society OSAllocatedUnfairLock would not exist. In my world all locks will be fair and open for all to pick.

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    I sure do.

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    Today’s agentic systems are such a mind-blowing unlock for people who know what they’re doing. I’m currently not quite vibecoding a code review tool (I’m guiding it heavily after every large batch of work) and I’m able to achieve 500%+ performance improvements simply by giving Codex a profiler.

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    When Claude designs your brand you get a company called Fish Audio with a mammal for the logo.

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    My model is thinking in French because I’m making coq au vin.

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    I honestly forgot Charlie and I had recorded this until I saw it show up in my podcast player today because it felt more like a conversation with my friend than anything formal. If you want to hear about my college shenanigans, my launch story for Plinky, with minimal doses of AI, give it a listen! https://mastodon.social/@Launched/116924302615353118

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    Am I missing something here or?…

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    Everybody’s heard that an ant can carry 50 times its weight, but not everyone is generous enough to sacrifice a Dorito to validate the hypothesis.

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    It’s genuinely impressive that Jack Dorsey is a truly visionary innovator, a very nice guy in my experience, and also the world’s worst manager who left to his own devices will build the absolute dumbest thing possible. https://techhub.social/@Techmeme/116959153871612931

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    My name is really gonna cost me in investor meetings…

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    Claude, do a breakthrough to solve Swift Concurrency.

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    I love this post so much, I wish I could retweet it 10000x. At the moment domain expertise matters more than ever, so people and organizations should lean into that rather than focusing on getting everyone to do everything all the time. https://www.seangoedecke.com/llms-reward-expertise

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    Om was a great writer, but an even better observer of society and culture. A lot of people have said his recent work was some of his best, and I’m inclined to agree when I read posts that have so much to say in so few words. https://om.co/2026/05/26/the-copy-and-the-guru

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    @viticci@mastodon.macstories.net @macstories@mastodon.macstories.net MAIcstories confirmed.

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    Love the new Siri, sick.

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    @tonyarnold@mastodon.social I don&#39;t want to sound cynical but I don&#39;t think there is much correlation between people I respect and people who are ultimately proven right about the future. To me this is mostly an exercise in triangulating where AI is in this moment, where people are in relation, and what that implies for where this technology is going. It&#39;s not just finding people who make good predictions — it&#39;s never been more important to listen to people who have good princip...

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    This will be very useful for OpenAI! https://bsky.app/profile/did:plc:cq4gg3odxz2pzmkx2fuac3u3/post/3mlqimhrwyk2g

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    People always ask Y Combinator but nobody ever asks How Combinator Doing?

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    Great lil post on how and why you should use AI to do better work rather than just moving faster. https://philboyd.me/blog/the-missing-buffer

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    GLP-1s are great but I can’t wait to see what people do when they get their hands on the next version — GLP-2s.

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    Contemplating. 🤔 #caturday

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    The Mets season so far, encapsulated in one play.

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    Codex on mobile running through your computer has got to be a nice improvement for OpenAI’s compute. Previously any task you spun up on mobile required creating a new container to make any little change. Now it’s simply using the same GPUs and energy you would if you were at your machine.

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    A little bit late posting this but HOLY SHIT THIS KNICKS GAME WAS BONKERS.

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    Life is so hard when you’re this cute. 🥺

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    No thoughts, head empty.

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    When OpenAI&amp;#39;s developers suggest using Codex for everything, I take their words literally.

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    This is so 1984 says guy who&amp;#39;s never read 1984.