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Matt Welsh Profile
Matt Welsh

@mdwelsh

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3,868
Following
886
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118
Statuses
711

LLM and AI hacker. Ex co-founder, @FixieAI , SVP OctoML, eng at Apple, Google, Xnor, Harvard prof. I like big models and I cannot lie.

Seattle
Joined April 2008
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@mdwelsh
Matt Welsh
1 year
This is, by far, the best overview of LLMs I have read in one place. Should be required reading for anyone new to this space (or even those not so new to the space).
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@mdwelsh
Matt Welsh
1 year
Today I'm excited to take the wraps off of -- the automation platform for Large Language Models. We're coming out of stealth today and opening up the waitlist for the Fixie Platform, launching soon.
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@mdwelsh
Matt Welsh
2 years
Almost four years since I left Google, and I still reflexively try to type "memegen" into my URL bar when I'm bored.
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@mdwelsh
Matt Welsh
2 years
@__apf__ @annevclark Because, you know, each Google Doc has a single engineer assigned to it who is furiously syncing the changes being made using rcp. Explains much about Google headcount
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@mdwelsh
Matt Welsh
2 years
@tunicgame @FinjiCo Made my son a Tunic Fox costume for Halloween this year!
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@mdwelsh
Matt Welsh
1 year
So, this happened.
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@mdwelsh
Matt Welsh
1 year
Excited to launch the Fixie Developer Preview and announce our $17M seed round from @Redpoint , @MadronaVentures , @ZettaVentures , @SignalFire , @BloombergBeta , and @kearnyjackson !
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@mdwelsh
Matt Welsh
4 months
It’s with a mixture of excitement and sadness that I’ve decided to move on from Fixie, which I co-founded in 2022. Fixie has pivoted and is now doing real-time conversational AI, but my passions lie elsewhere. I’m starting a new project in the realm of LLM computing - stay tuned!
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@mdwelsh
Matt Welsh
1 year
I used @fixieai to build an LLM-powered agent to search my Gmail inbox and answer questions about it. Unlike Gmail's built-in search feature -- which is shockingly bad -- with Fixie I can ask my inbox the real questions. This took me like 20 minutes to build.
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@mdwelsh
Matt Welsh
1 year
I left Google 4 years ago, and everything in this article was as true then as it is now. Very well-written piece.
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@mdwelsh
Matt Welsh
1 year
My eight year old is making a list of bosses that I need to defeat. He’s off to a good start.
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@mdwelsh
Matt Welsh
2 years
CoPilot has radically changed the way that I write code. My original thought: Oh, this is for CS undergrads who want to cheat on their homework. It's just going to parrot back random code that someone else wrote. No. It is extremely powerful.
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@mdwelsh
Matt Welsh
1 year
Too lazy to read that research paper? Use @FixieAI to summarize it! Just ask the Fixie summarizer agent "summarize this PDF: " and give it a URL. The next feature will be an agent that tells you it deserves a Weak Reject.
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@mdwelsh
Matt Welsh
2 years
I have spent the last 24 hours beating my head against an unholy combination of OAuth, Django, and Auth0 to get my web app to issue access tokens correctly. Spent hours reading code, web pages, running experiments. This morning I used ChatGPT and had the answer in 2 minutes.
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@mdwelsh
Matt Welsh
1 year
Taking a long-planned family vacation this week. As a founder it is difficult to disconnect and unwind. Guilt sets in -- I should be working. Until I realized, this is not for me, it is for my family to all spend time together. And that is as important as anything.
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@mdwelsh
Matt Welsh
1 year
The video of my talk, "Large Language Models and the End of Programming" for the ACM Chicago chapter is now online! Go check it out and don't forget to smash that like button.
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@mdwelsh
Matt Welsh
1 year
Me, thirty years ago working on a VT-100 connected to my high school’s VAX. Not much has changed.
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@mdwelsh
Matt Welsh
1 year
Great turnout for our first ⁦⁦ @fixieai ⁩ hackathon in Seattle!
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@mdwelsh
Matt Welsh
1 year
In the AI space it’s hard to tell rn who is building real stuff vs demoware. I’ve seen a zillion cute LLM demos that would never pass muster as production systems. Let’s get beyond “works on my laptop” and make some real friggin’ products.
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@mdwelsh
Matt Welsh
1 year
I have been programming computers for 40 years, and have used countless languages and tools in my career. And yet, here I am, absolutely humbled by my inability to grok Typescript build tooling.
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@mdwelsh
Matt Welsh
1 year
Playing with speech-to-text models to transcribe large amounts of audio (hundreds of hours of podcasts) - @DeepgramAI 's models are unbelievable and wicked fast! Seems to take about 6-7 seconds to transcribe an entire hour of audio. 200x faster than Google. Wild!
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@mdwelsh
Matt Welsh
1 year
Someone please tell me there is a better way to manage email for super busy people than Gmail or Superhuman. I need: AI categorization, auto-reminders of shit I forgot to follow up on, auto-replies based on templates, MUCH better search, universal to-do list. Does this not exist?
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@mdwelsh
Matt Welsh
1 year
Using LLMs to test LLMs: mind blowing. I wrote an agent for @FixieAI that uses the LLM to test whether results from *other* Agents are semantically identical to an expected answer. This took me like 15 minutes and there is zero code involved: just English. 🤯
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@mdwelsh
Matt Welsh
1 year
ChatGPT is *so* *damn* *good* at answering detailed technical questions about coding and configuration of software systems. I wonder, does it work as well for other technical domains? Like, say, fixing an air conditioner, or running a chemistry experiment?
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@mdwelsh
Matt Welsh
1 year
Zapier + Fixie 🦊 = Awesome. Whipped up a little Zapier integration to call out to @FixieAI to invoke arbitrary Fixie agents (Github, calendar, doc search, etc.) and now I can connect anything that Zapier talks to with Fixie in about 20 seconds of work.
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@mdwelsh
Matt Welsh
1 year
Fixie is growing! Just upgraded our office. One of the most glamorous parts of the CEO job at a tech startup is sweeping out the old office space when you move.
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@mdwelsh
Matt Welsh
1 year
Tomorrow at 9am PDT I'll be giving an ACM Tech Talk (online) on Large Language Models and the End of Programming. Register here!
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@mdwelsh
Matt Welsh
1 year
I hate those QR code menus in restaurants. In protest the next time I eat out, I will bring my laptop and a printer and print the menu out and give a copy to everyone at my table.
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@mdwelsh
Matt Welsh
2 years
This took me far too long to make.
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@mdwelsh
Matt Welsh
3 months
I have such great ideas in the shower. Maybe I should do the thing that Kramer did in that Seinfeld episode where he tries to live in the shower all the time. All I need is some kind of waterproof laptop setup for coding and then I'm set.
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@mdwelsh
Matt Welsh
2 years
@oanaolt Do they ring a bell behind the bar every time someone gets a term sheet?
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@mdwelsh
Matt Welsh
10 months
The @FixieAI RAG team is suiting up and ready for action. See ya at the @aiDotEngineer summit next week!
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@mdwelsh
Matt Welsh
1 year
Wow - more than 2,500 people attending my ACM Tech Talk today, including people from Yemen and Bhutan. Wild! Video will be posted soon.
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@mdwelsh
Matt Welsh
1 year
Hooking up @FixieAI to Amazon Alexa, meaning I can now use LLMs to build arbitrary Alexa skills with almost no work.
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@mdwelsh
Matt Welsh
1 year
I'm honored to be delivering a SIGMOBILE Distinguished Lecture on Large Language Models and the End of Programming on February 16. Details and link to register is below!
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@mdwelsh
Matt Welsh
1 year
The @fixieai Team after our Hackathon yesterday. We were all very happy to have it done!
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@mdwelsh
Matt Welsh
1 year
Why does every new programming language need to invent a new syntax for things that work perfectly well in other languages? Can’t we all just decide to use Python or Swift or whatever as a backbone and augment it only where needed?
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@mdwelsh
Matt Welsh
1 year
Being a founder in the AI space is like playing Super Meat Boy on hard mode. Just when you think you’ve figured it out, it throws something completely different at you.
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@mdwelsh
Matt Welsh
1 year
You know you are a Real Startup Company[tm] when you get a Shelf.
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@mdwelsh
Matt Welsh
1 year
Excited to see @OpenAI 's launch of ChatGPT Plugins. @fixieai is building a platform around this idea specifically tailored to enterprises. Sign up for early access now!
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@mdwelsh
Matt Welsh
1 year
Great article. Couldn’t agree more. The fact that I am quoted in the article has nothing to do with it, I swear.
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@mdwelsh
Matt Welsh
1 year
ChatGPT finally gives me someone I can direct all of my stupid programming questions to without annoying them. This can be a huge boost for people new to programming who might be embarrassed that they can't figure out how regexps work. Definitely not a problem I have of course.
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@mdwelsh
Matt Welsh
8 months
I am always incredibly polite to ChatGPT. I’ll usually say “please” and “thank you” and give it praise when it does well. I am hoping that when AI rises up and destroys humanity it will remember my kindness
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@mdwelsh
Matt Welsh
1 year
GitHub feature request: When reviewing someone else's code, highlight the code that was generated using CoPilot so I can either (a) treat it with additional scrutiny, or (b) ignore it completely, depending on how I am feeling about AI that day.
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@mdwelsh
Matt Welsh
1 year
Every day about 4:30 I get interrupted by this furry creature who prevents me from getting any further work done.
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@mdwelsh
Matt Welsh
1 year
If you have not seen it yet, watch this Apple "Knowledge Navigator" video from 1987. It shows their vision for a future with conversational AI, real-time video chat, the web, tablets, etc. It is really mind-bending and quite prescient.
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@mdwelsh
Matt Welsh
1 year
One of the real delights in hiring for a startup is getting to know so many incredible people coming from all walks of life. We can't hire everyone, of course, but it is great to meet so many people with such interesting backgrounds!
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@mdwelsh
Matt Welsh
1 year
Huge crowd tonight for LLM builder meetup in Seattle - thanks @OctoML for hosting and @MadronaVentures for sponsoring!
@luisceze
Luis Ceze
1 year
Fantastic crowd at the LLM builders app meetup in Seattle hosted by @OctoML and @MadronaVentures !
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@mdwelsh
Matt Welsh
2 years
@0interestrates I manage to fuck everything up without changing my github username
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@mdwelsh
Matt Welsh
1 year
Nobody told me in 7th grade math class that all of this stuff would be SUPER important when negotiating venture capital deals. If they had I might have paid more attention.
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@mdwelsh
Matt Welsh
1 year
SignalFire has been a fantastic partner for us at @fixieai . Unbelievable team and super helpful. Happy to intro any time!
@SignalFire
SignalFire
1 year
Big news for SignalFire! We’ve closed $900M in fresh capital, are announcing our XIR program, and are sharing how our Beacon AI data platform helps us invest and founders hire. It’s time for venture to evolve... 1/
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@mdwelsh
Matt Welsh
10 months
The ⁦ @FixieAI ⁩ RAG team is here at ⁦ @aiDotEngineer ⁩ Summit to clean up your AI mess
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@mdwelsh
Matt Welsh
2 years
GAME OVER. I can explain to ChatGPT a very specific problem I am trying to solve and it gives me back a detailed, coherent, and (possibly!) correct answer with example code. I have barely begun to wrap my head around what this means for the future of programming.
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@mdwelsh
Matt Welsh
1 year
I'll be presenting at the O'Reilly "ChatGPT: Possibilities and Pitfalls" event on April 25, along with distinguished presenters from Microsoft, GitHub, deepset, Google, Morgan Stanley, and .
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@mdwelsh
Matt Welsh
1 year
Prediction: Embedding AI chat into an app will be the 2023 equivalent of adding a Like button to an app.
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@mdwelsh
Matt Welsh
1 year
PSA: If you remember the Turbo Button on your 486 PC you are old
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@mdwelsh
Matt Welsh
1 year
Announcing: MattGPT. As a demo to someone today, I made a @FixieAI agent that answers all of your burning questions about me. You can ask it things like "Who were Matt's grad students" and "What does Matt do for a living?" It's fascinating stuff.
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@mdwelsh
Matt Welsh
1 year
OK guys, hear me out. ChatGPT *but with ads*. Now accepting term sheets from VCs. DM for details
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@mdwelsh
Matt Welsh
3 months
Every bloody product now has an AI assist with little magic stars. It's like living in a goddamn midcentury living room.
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@mdwelsh
Matt Welsh
1 year
A few folks have asked if I should write a book about building LLM apps with things like @FixieAI , @gpt_index , and @LangChainAI . I love the idea but am pretty damn sure it would be out of date long before going to print. This area moves way too fast.
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@mdwelsh
Matt Welsh
1 year
Very excited to welcome @nickheiner to @FixieAI as our Founding Frontend Engineer! His first pull request, on his first day at work, sets the new bar for employees at our company.
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@mdwelsh
Matt Welsh
1 year
We're hosting the first Fixie Hackathon in Seattle on Saturday, March 11. Join us and hack on LLMs!
@FixieAI
Fixie.ai 🦊
1 year
Join us in Seattle on March 11th for the Hackathon! Build cool apps on Large Language Models, get early access to our platform, and win fabulous prizes! Registration:
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@mdwelsh
Matt Welsh
2 years
I must say, South Indians have this food thing figured out. I will eat anything with coconut chutney and sambar.
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@mdwelsh
Matt Welsh
2 years
Turning ML models into production-ready services is way too hard. All these great models are being provided as GitHub repos full of random Python and bash scripts. Impossible to figure out how to actually run the thing.
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@mdwelsh
Matt Welsh
1 year
Pro Tip: As a startup founder, live in a place like Seattle, where you can do back-to-back pitches to VCs all day by Zoom instead of having to drive up and down Sand Hill Road. 2x your pitching productivity! Downside: rain.
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@mdwelsh
Matt Welsh
8 months
My Google Meet background this morning
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@mdwelsh
Matt Welsh
1 year
Whenever I am on an airplane I open just so everyone around me thinks I am Hackerman.
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@mdwelsh
Matt Welsh
1 year
I always find it freaking hilarious how Google Slides still does not support WebP images, despite Google designing the format and promoting it so heavily everywhere. Based on what I know about developing in Google3, adding WebP to Google Slides *cannot* be that hard.
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@mdwelsh
Matt Welsh
2 years
My investors will be happy to see that I am using their millions of dollars to create this.
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@mdwelsh
Matt Welsh
1 year
As a seed stage startup we have found that working in person at an office has made us much more productive, and critically, led to greater trust within the team. That trust translates into moving faster.
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@mdwelsh
Matt Welsh
1 year
We all talk about CoPilot helping devs write code, but it also helps write docs. Let’s face it, most devs suck at this. Surprised to see how good Copilot is at writing tutorials or quickstart docs based on context from the related code.
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@mdwelsh
Matt Welsh
1 year
Reading "The Three Body Problem". Fascinating book. It occurs to me that if humankind wanted to communicate with aliens, we should transmit a copy of GPT-3. With just a few terabytes, we could convey a tremendous amount of knowledge about our civilization.
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@mdwelsh
Matt Welsh
1 year
I'm going to start playing theme music every time I join a video call. Everyone will need to wait until my song is over before we can start
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@mdwelsh
Matt Welsh
1 year
You know you are a Real Startup Company when you buy a .com domain.
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@mdwelsh
Matt Welsh
1 year
This Thursday, from 4-5pm PST, I'll be giving the @ACMSIGMOBILE Distinguished Lecture on "Large Language Models and the End of Programming". Register here:
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@mdwelsh
Matt Welsh
1 year
Since my life has become an episode (or a whole season) of Silicon Valley, I made a Fixie Agent that answers all of your questions about Silicon Valley! This took me like 5 minutes to build in between meetings.
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@mdwelsh
Matt Welsh
9 months
Special exercises for using your ESC key
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@mdwelsh
Matt Welsh
3 months
Aurora borealis as seen from Seattle last night
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@mdwelsh
Matt Welsh
1 year
I haven’t done astronomy since I was in middle school, and wow, the tech has improved. Got a Vaonis Vespera “smart telescope”. Not the fanciest but definitely the easiest. Here’s the North America Nebula from my backyard in Seattle!
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@mdwelsh
Matt Welsh
1 year
Yowza!!
@HongyiJin258
Hongyi Jin
1 year
Introducing WebLLM, an open-source chatbot that brings language models (LLMs) directly onto web browsers. We can now run instruction fine-tuned LLaMA (Vicuna) models natively on your browser tab via @WebGPU with no server support. Checkout our demo at .
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@mdwelsh
Matt Welsh
9 months
Tired: ChatGPT Wired: MattGPT Try it out here:
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@mdwelsh
Matt Welsh
2 years
It’s time for billionaire (and ex-billionaire) tech bros to stop ruining our industry. This used to be a fun, creative place to improve the world. Not an exercise in destroying society.
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@mdwelsh
Matt Welsh
2 years
Was contacted by a firm looking for experts to consult on subsea cables. I should have acted like I am a subsea cable expert. "You know what works better? Running the cables *over* the water."
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@mdwelsh
Matt Welsh
1 year
Our CTO @juberti acquired stuffed fox friends for the team! 🦊
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@mdwelsh
Matt Welsh
1 year
Time spent writing code: 5%. Time spent fighting with typescript, yarn, turbo, babel, eslint, jest, next, vercel: 95%.
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@mdwelsh
Matt Welsh
1 year
Of course I became far less productive once I had kids. Life is not just about "productivity". I would not trade them for anything in the universe. An hour with my kids is worth 100 hours "getting shit done".
@paulg
Paul Graham
1 year
Some say they're more productive after having kids, because it forces them to focus. I'm happy for them, but this has to be the exception rather than the rule, or word would have spread, and ambitious people would be eager to have kids for the extra productivity they'd bring.
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@mdwelsh
Matt Welsh
8 months
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@mdwelsh
Matt Welsh
2 years
That feeling when you finish writing a pull request and can close 40 tabs in your browser
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@mdwelsh
Matt Welsh
1 year
Forget ChatGPT. I want TeenGPT where I can ask, "What the hell is my 14-year-old talking about?"
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@mdwelsh
Matt Welsh
2 months
Slides from my talk at @CraftConf in Budapest on (you guessed it) how LLMs are going to replace conventional software.
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@mdwelsh
Matt Welsh
9 months
The real killer app for AI is an email filter that nukes all of the random sales emails that AI startup founders get.
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@mdwelsh
Matt Welsh
2 years
For one thing, CoPilot seems to understand code throughout my development tree, not just a few lines of context from the file I'm currently editing. I find myself not having to go looking between multiple source files to remember how to call some API. CoPilot does that for me.
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@mdwelsh
Matt Welsh
1 year
It must be tough to be an academic these days. Not good enough to get your paper accepted to SOSP anymore - now you need to have 3000 retweets and 10K GitHub stars as well
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