⬅ Mathew Hartley (@four_seven) header
⬅ Mathew Hartley (@four_seven) profile picture

Engineer at Grw AI. Production agents for sales, side projects in finance. Bike person, bad guitarist. Half-formed thoughts on what's shipping

Wellington, New Zealand
Joined January 2008
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⬅ Mathew Hartley retweeted
fitter happier more productive @reactorworld x @jamesonhodge x @trykino
my vocal synth models the vocal tract as a network of branching acoustic tubes, unlike vocaloid which stitches together and pitch-shifts phoneme recordings. still working on improving naturalness by tuning it against recordings of real singers, but I'm already impressed at how cool it sounds!
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⬅ Mathew Hartley retweeted
Now you can really see everything
my vocal synth models the vocal tract as a network of branching acoustic tubes, unlike vocaloid which stitches together and pitch-shifts phoneme recordings. still working on improving naturalness by tuning it against recordings of real singers, but I'm already impressed at how cool it sounds!
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Unpopular opinion, I miss the Claude 5h limits, it was good pacing for the weekly timeframe 😅
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NZ based, and having fun with a hermes bot doing product research and daydreaming on what if projects for me - but that's powered by OCG and deekseek flash so I'm not spending more than $50USD personally for the privilege (~$500USD for work, monthly)
This really resonates with me I have zero desire to have agents triage my email, go shopping for me, analyze my kid’s homework or whatever I’m not mad, these are just not problems I have that need solving. And lmao that most of this crap comes from grifters 😂
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⬅ Mathew Hartley retweeted
Got rejected from a @Railway job this morning because I put “we should not breach our customers” in my resume.
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I'm going to regret this with my claude sub usage aren't I?
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⬅ Mathew Hartley retweeted
Canva’s terms for departing employees are both exceedingly generous and a window into modern tech: * Six months salary * A year healthcare * A year of LinkedIn premium * A $10k grant to start a business * Keep your MacBook
Faarking hell: Canva announces deep lay offs hitting 22 per cent of its employees.
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⬅ Mathew Hartley retweeted
We got your back, New York!
Readers added context they thought people might want to know
Several figures here aren’t federal results or NY-specific. The $472B combines US wide pledges: Micron's $250B is nationwide (NY site $100B) Anthropic's $50B covers TX and NY. The 48% murder drop is from NY's state run GIVE program (28 departments, Jan – May 2026). arkolith.com/news/news-micr… therepublic.com/?p=843020 governor.ny.gov/news/safer-str…
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See you there! 🤘
Pre-reg sorted. Bring on kawaiicon 4!
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Pretty sure in May I had a staff eng ask me to revert to avoid the merge conflicts my refactoring had caused for a long-running pr
do you remember manually solving merge conflicts
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I don’t think enough about how wildly software Eng has changed in the last ~2 years Maybe I’ll sprinkle some more console.logs in my next pr for old times’ sake
one day you wrote console.log("here") for the last time and didn't even know it
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strong agree
Replying to @wangzhr4
• comments go stale very quickly and confuse agents and people • they are often used by agents to explain workarounds that would've been better off actually fixing the code instead • they are not enforceable and waste your agents' tokens my point is that moving prose (comments, rules, agent.md, skills) into deterministic lint rules, better API design/types, is far more effective, enforceable, and token efficient. comments are simply a crutch that agents will happily misuse
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Here's some takes on Agentic Dev: - Force your agent to comment like they're being graded. Allow them to clean up nearby comments too - Ask for the subtractive fix - Delete tests that restate the code (Tautological tests considered harmful) - use t3code nightly what's yours?
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Other side of this is the most valuable devs from 2+ years ago might not be the most valuable today with how far software dev has shifted
it's crazy how easy it is to spot 10x engineers these days for a certain set of people LLMs totally unlocked their potential to the point where imagining their life before this seems totally depressing
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Yeah it's 4.5 all over again 📈(output)
opus 5.5 has had a crazy impact on our team you can probably even observe it externally with everything we're putting out
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⬅ Mathew Hartley retweeted
Just told Claude to have some "me time" and work on something that it would enjoy.
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⬅ Mathew Hartley retweeted
🗞️ the world hasn’t figured out yet that you can literally just fix everything with a Nix overlay In this blog post, I go into how I use Nix, why you should use it, and in the tweet below is a runnable demo showing all of the concepts in this post ghuntley.com/nix/
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