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losvedir

10,640 karma · joined June 8, 2009

Senior Software Engineer at PagerDuty, using primarily Elixir and JS.

Previously senior developer at the MBTA, and before that co-founder and Lead Engineer at CoachUp, a Ruby on Rails start-up in Cambridge, MA (TechStars Boston F12).

Feel free to shoot me an email about anything: gabe@durazo.us.

The postings on this site are my own and do not represent PagerDuty's positions, policies, strategies, or opinions.

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losvedir··on Tesla Hasn't Had a Successful New Product Launch Since JB Straubel Stepped Down
Speaking as someone who follows the NFL, people will forgive all kinds of horrendous behavior if the player's team is winning. It's easy to say things in the abstract like "won't buy a Tesla" because most people aren't really shopping for a car all that often. But if the cybertaxi works and is cheap, then I would guess a lot of people won't be sticking to their proclaimed values. That said, I have my doubts that cybercab will really work all that well.
losvedir··on GitHub New pull request overview page in public preview
A bug that's been driving me crazy lately is the file list in the sidebar doesn't reliably link you to the right file when you click on a filename. I find myself clicking it several times while the code on the right jumps around until it finally lands on the right file.

Anyone else experience this?

On topic, regarding these changes. I'm not sure what all changed, but I like having the status checks and merge button at the top of the page now.

losvedir··on My psychophysics as a bilateral cochlear implant user
> But I cannot know what sound is really like, because I have no memory of normal hearing.

and

> I was born with normal hearing. I began losing my hearing in childhood ... After I was registered, I started wearing hearing aids. People's voices became clear, and for a few months things were good. ... A specialist told me that I badly needed cochlear implant surgery, but I hesitated because it was very expensive.

I'm confused what's going on here.

losvedir··on Postman silently auto-installs AI plugins and attempts to share all API data
Claude.
losvedir··on The SEC Should Block Anthropic's IPO to Protect the Public
It's totally normal for companies to release their own take on the numbers alongside GAAP ones.
losvedir··on AI isn't replacing SREs, it's deskilling them
I don't understand the perceived hypocrisy. The chance of death in a 1hr Cessna ride is something like 100x a domestic commercial jet flight, so it's reasonable to have different views of them? Maybe I'm missing your point.
losvedir··on We're releasing the weights of Mistral Large 4
Calling it a "cracking scene" shows the different, though. Open weight models are intended to be used this way.
losvedir··on MacBook Pro with PROLED XDR Display and Touch
Cue the folks who have used nothing but Apple laptops for the past 20 years coming here and wondering who would possibly want a laptop with a touch screen.
losvedir··on Amazon Is Gutting Its AI Division After Sustained Failure
Anything AI related is going to start needing [month] tags.

> Amazon Is Gutting Its AI Division [July]

losvedir··on Solar power is becoming bigger than nuclear
Where are you located? I hear comments like this and get excited and then find out they're based in, like, Australia. Whenever I look into it here in Chicago, it seems I won't get nearly the same production on cloudy days, and especially in winter.
losvedir··on The State of Context Engineering
> The tea task for FireRed was in its weights, so it poisoned its context.

Mmm, to my mind, isn't this mixing completely different things? I thought poisoned context is stuff in the context that makes the model behave poorly. But if it's in the weights, that's just... model issues.

losvedir··on Job loss and cortisone mania
Hadn't been out of a job for 10 years, but was still in his 6 month probationary period. Does that mean he left a job at one company for this one, only to be laid off almost immediately after??
losvedir··on Disney Raising Prices Days After Confirming Ads Will Now Show Up on Every Tier
I'm trying to understand what this actually means. Here's Disney's page on the matter[0].

I understand that sports will tend to have ads displayed in the stadium and so on, and that some show may feature characters drinking Pepsi rather than Coke because of an agreement. And I guess movies may have trailers. Is that the extent of it? If I get what feels like an obvious "ad" then we'll probably be canceling, but I guess I'm okay with those things that I mentioned.

[0] https://help.disneyplus.com/article/disneyplus-ads

losvedir··on Jared Kushner Hacked Phone Reveals Secret Negotiations, Millions in Transactions
Echoes of "Lock her up! Lock her up!"
losvedir··on Butlerian Jihad
We have to be careful about letting fiction inform our worldview too much. At the same time, storytelling is one of the most natural and effective ways we have to convey ideas to actually wrestle with.

What are some other fictional universes with interesting takes on AI and humans? I think the Hyperion cantos (at least books 1 and 2) are great. Stross's Accelerando also has some wild ideas but feels maybe less directly relevant.

losvedir··on My old job feels distant now
This feels a bit like someone with one of the first cars thinking about how much faster they can distribute feed for all the horses.

That is, you haven't projected this forward just a bit further and are still thinking in terms of the old world where software is at all valuable and where you can have customers to sell it to.

I still feel myself falling into that trap, but haven't figured out what world replaces this.

losvedir··on Tesla Unveils 'Flying' Roadster with SpaceX Thrusters [video]
I'd agree it's novel if it is, in fact, a rocket car. I'm skeptical about the car part, though. It's much less impressive if it's just a lightweight prop. I haven't seen the full presentation, though, to see if they drive it, if someone can climb in and so on.
losvedir··on Anthropic AI model submits false tip on unsolved Philly murder, police say
> Anthropic notified Philadelphia police of the incident on Wednesday Oct. 7, and the department met with the company’s representatives on Thursday, Oct. 8., officials said. Police then located the submission in the website’s tip records and confirmed the corresponding email remained in spam.

And later

> Those PPD safeguards limited the impact of this incident.

Ha, so the PPD safeguards is a spam filter? Claude emailed a tip and it went straight to spam, and nobody noticed until Anthropic realized what they'd done and reached out, whereupon they looked in the spam folder and said, yep there it is. Super intelligence, here we come.

losvedir··on Sorry, I'm in a meeting
Sure, it's not for everyone. But if you're someone who's blocking ads to view YouTube comment, then that doesn't apply. Which is the context of this subthread.
losvedir··on The Mathocalypse
> A maths theorem that can only be partially understood/proven only has value as marketing collateral.

If this is true, then what's really the point of math? A lot of math is actually useful. A proof regarding cryptography, for example, would have practical application even if not understandable by humans.

losvedir··on I gave Opus 5.5 one prompt and six hours to visualize Invisible Cities
I heartily recommend the audiobook, narrated by John Lee.

The book is a trip and the dreamy sort of narration matched it perfectly. My wife and I would spend evenings listening to one city at a time, on a walk around our little park, one headphone in each ear. I don't know if it was just the environment or the time in our lives, but we both really look back fondly on this book.

losvedir··on Claude Haiku 5.5
Nah, it's pretty trivial to switch providers (especially with Claude's help, ha).

This is more to encourage people to try out adding AI into their product, which is a totally different flow and experience from using AI to build the product.

losvedir··on The lamps in my house
That was exactly my intended point (and my comment does mention the hour subdivision). There are a lot of meaningless coincidental homonyms, but these tend to not be homonyms in other languages. E.g. I dunno "left" in English would be "izquierda" or "dejó". Or conversely, "vino" in Spanish would be "wine" or "came". The fact that "second" and "segundo" have homonyms in their respective languages is a clue that the unit of time and the ordinal word are the same is not a coincidence. And when you look into it it's for the reason that you state. The homonym pairs indicates an etymological relationship between the two concepts.

So I was wondering if the same applied here. My initial reaction is that "light" meaning "illuminated" and "light" meaning "not heavy" is that this is just one of those coincidences, since I can't see how that one word relates the two concepts. But given that Japanese also does the same, it makes me wonder if maybe there is some sort of relationship. Maybe it was a common belief historically that the sun was not very heavy or something like that. Or maybe not and it's just a rare double coincidence!

losvedir··on The technology to eradicate mosquito-borne disease exists
Are you proposing that it would be infinitely bad? That somehow extincting a few varieties of mosquitoes could cause the collapse of all life on earth?

I don't get the "but what if it's somewhat - not infinitely - bad" argument? The known good is so dramatically good that we'd need a shocking amount of unknown bad to have made it not worth it. But if I'm choosing between mosquitoes, and say... fish, frogs, and a variety of birds, yes, get rid of the mosquitoes.

losvedir··on The lamps in my house
Unrelated aside, but:

> Fun fact: “Akari” means light in Japanese, both as illumination and as lightness.

Wow! I love it when two languages have matching homonyms. I always wonder "what does it mean ?". Like, in English "second" to mean the unit of time and the place after "first" feels like two distinct usages. But it's the same in Spanish ("segundo"), which points to a deeper connection (and isn't so unsurprising given the shared roots of the languages): the unit of time is called that because it's the second subdivision of an hour.

The two usages of "light" in English are so distinct I'm quite surprised it's like this in the entirely unrelated Japanese language. Is this just a big coincidence, or does anyone know any deeper reasons here?

losvedir··on The Legend of von Neumann (1973) [pdf]
von Neumann is a warning for me related to AI. Here he was, the smartest man alive, and he wanted to preemptively nuke the USSR. Thank goodness "less intelligent" heads prevailed.
losvedir··on Gemini 4 Argon (High): Intelligence, Performance and Price Analysis
The only models beating it are on "max", while this is "high". There's no guarantee that those effort / reasoning levels compare, but there's almost certainly an "xhigh" or "max" version later which will score higher there.
losvedir··on Gemini 4 Argon
> expanding the model’s output token limit to an industry-leading 1M tokens, up from the previous 64K tokens

Can someone help me understand this? I might have an out of date mental model of how these things work.

Fundamentally, LLMs output tokens 1 at a time, generating the next token from all the previous. And as the context window gets larger, this gets harder / slower / more expensive. So I get the idea of a maximum context window.

But I don't understand the point or meaning of an output token limit. I thought it was more a measure of price capping (since output tokens are more expensive) that a user could configure. I guess a model will keep generating tokens until it hits a "stop", so does this mean it's tuned to more aggressively produce output tokens? How does that fit into agentic loops. Are output token limits based on how long until it goes back to the user? Or does each "turn" of tool call, thought, tool call, thought, etc, get its own limit?

losvedir··on Gemini 4 Argon
They do release the model weights for Gemma. But could anyone actually run Gemini 4 weights? It's probably like a 10T model, which you need an industrial rack for anyway.
losvedir··on Ask HN: What are you reading?
Book 2 of Hyperion Cantos. Really enjoying it, but am unsure if I want to do books 3 & 4. Anyone read them and recommend either way?
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