MurphyA/hacker-news huggingface dataset:
by nullc | 2025-06-24 05:45:55+00:00
> with the image plane rotated differently relative to the CCD plane in each exposure

LSST is a alt/az telescope. The earth rotates. The sensor plane must rotate during the exposure to prevent stars from streaking, which it accomplishes via this platform: https://docushare.lsstcorp.org/docushare/dsweb/Get/Document-...

The fact that the sensor rotates without the spider rotating also spreads out the diffraction spikes.

But that rotation is limited, so between different exposures with different filters the image plane will be rotated relative to the sky.

As the quote goes the change in orientation has benefits for controlling systematics..
Ask HN: Other Online CS Courses on Advanced Topics
by KiranRao0 | 2025-06-24 05:46:29+00:00
I really enjoyed Andy Pavlov’s course on Databases[1]. I’m wondering if people know other courses on in depth CS topics including (but not limited to) Distributed Systems, Languages, Operating Systems, Real Time systems, etc.

1: https://15445.courses.cs.cmu.edu/fall2024/
by bob1029 | 2025-06-24 05:46:39+00:00
> Inverters are the cheap part

The whole point with actual inertia is that you get a large multiple of your maximum capacity without any redundant parts or added system complexity.

Keeping around 10x+ more semiconductors than you need to cover a tiny fraction of operational scenarios is difficult economics.

A semiconductor device cannot be overloaded like a spinning generator or transmission infrastructure can. You cannot trade temperature and maintenance schedule for capacity in the same way. Semiconductors have far more brittle operating parameters.
by delusional | 2025-06-24 05:46:47+00:00
> searching your home all the time, whenever they want

What? How does OpenAI map to your home at all? This is pure nonsense. You seem to have entirely dismissed the comparison to driving a little too out of hand.

The internet is, like the roads, public infrastructure. You can't claim that encryption makes all traffic on the public infrastructure as private as staying home.

You sound like one of those "free man of the land" guys: "I'm not driving your honor, I was traveling."
by Sniffnoy | 2025-06-24 05:46:57+00:00
This sounds a lot like the game played by the International Kriegsspiel Society (https://kriegsspiel.org/), which I think is worth noting in terms of other implementations of the same idea.

(Why do I not just say "This sounds a lot like Kriegsspiel?" Because there's so many different varieties of Kriegsspiel, not all of which work like this, so I'm pointing to a particular one that does.)
by bruce511 | 2025-06-24 05:47:37+00:00
In order to answer your question, you first need to understand why you wrote the code, and why releasing it as Open Source is attractive to you in the first place.

Only from a point of understanding this context does your question make sense. Without this context all answers are equally valid and equally useful. And since few replies will include their context it will be hard for you to discern which match yours.

Personally, no, I don't care about training LLMs. But it's unlikely that my context matches your context.
by Lerc | 2025-06-24 05:48:29+00:00
I think both you and pyuser583 are correct to a certain extent. The stated reasons for overturning Roe were because of the tenuous basis as a privacy grounded position. On the other hand I completely believe that Roe was such a politically charged issue that the judges voted according to their allegiance, even though they are not supposed to have such allegiances. Everybody would have been surprised if any of the judges had decided differently to how they did. So, while there may have been a legal argument to be made, I don't think that particular issue was decided on those grounds.
by chii | 2025-06-24 05:49:07+00:00
> there is almost zero demand for private LLM right now.

you need some really expensive hardware to run a local LLM, most of which is unavailable to the average user. The demand might just simply be hidden as these users do not know nor want to expend the resources for it.

but i have hope that the hardware costs will come down eventually, enough that it reveals the demand for local LLM.

After all, i prefer my private questions to an LLM not be ever revealed.
by SparkyMcUnicorn | 2025-06-24 05:49:29+00:00
I've had Claude Code run for many hours, and also let it manage its own sub-agents. Productively.

Coming back to an implementation that has good test coverage, functions exactly as specified, and is basically production-ready is achievable through planning/specs.

Maybe Cursor can do this now as well, but it was just so far behind last time I tried it.
by JakeHPark | 2025-06-24 05:49:50+00:00
> The article seems to talk about the "wokeness hypothesis" on this issue in terms of attributes of authors (e.g., their race or gender) rather than of stories. I don't know much about that. But if there's a way that wokeness or something like it has influenced writing, I'd say it's from a different angle: I just get the sense that there's a lot more risk today in writing about characters very unlike the author. It can be perceived as trying to "tell [insert group name here]'s story" without their involvement or consent. I think the severity of this is overstated by right-leaning reactionaries, but it's hard to argue that it's not a genuine shift in societal mood and values.

People in general don't take as much risk anymore. It's been variously documented by Byung-Chul Han in The Palliative Society, Jonathan Haidt in The Coddling of the American Mind, and even The Culture of Narcissism by Christopher Lasch. Generally, it's a response to increasing complexity, atomisation and declining social ties, all of which contribute to a state of emotional insecurity. On a related note, Chris Hedges remarks in The World as It Is:

> But in the game of American journalism it is forbidden to feel. Journalists are told they must be clinical observers who interpret human reality through their eyes, not their hearts—and certainly not through their consciences. This is the deadly disease of American journalism. And it is the reason journalism in the United States has lost its moral core and its influence. It is the reason that in a time of crisis the traditional media have so little to say. It is why the traditional media are distrusted. The gross moral and professional failings of the traditional media opened the door for the hate-mongers on Fox News and the news celebrities on commercial networks who fill our heads with trivia and celebrity gossip.

I talk about this more in my essay here, if anyone is interested, although it's quite long: https://jakehpark.substack.com/p/epistemic-telos-god-as-sadi...
by tosmatos | 2025-06-24 05:50:08+00:00
I feel you. A repairable phone that's 5 inches would be so perfect. I miss my the Xperia X Compact so bad, I loved that phone, I had Lineage OS on it and it was great. It wasn't easy to repair though. Now I've got a Jelly Star, and it's pretty much the same problems, plus no updates in a while.
by throwaway2037 | 2025-06-24 05:51:15+00:00
> Most bars and restaurants for that matter will not serve me because I do not speak Japanese, so they say.

Really? That was certainly true 15 years ago, but things have changed a lot after the tourist flood gates opened under PM Abe. Even Golden Gai in Shinjuku Kabukicho which is/was a bit notorious for turning away foreigners is more "friendly" than ever. The irony is that so many bar/alcohol related terms in Japanese are loanwords from English. You could just say the English word with fake Japanese accent and they would probably understand you!
Ask HN: How do you learn Spanish guitar?
by mazzystar | 2025-06-24 05:52:26+00:00
I've recently become interested in Spanish guitar, particularly the Gypsy and flamenco styles, but I don't know how to get started. Are there any beginner textbooks or videos available? I previously bought a book that started with scale exercises, which I found very tedious, and ended up giving up. Thank you very much.
by bitwize | 2025-06-24 05:56:02+00:00
The original Pixar characters were also CalArts style; in fact they were more CalArts than the modern "beansmile" characters. The "A113" easter egg in many Pixar movies refers to a classroom at CalArts. "CalArts style" was a slur coined by John Kricfalusi for animation from the likes of Disney and Don Bluth from the 1970s-1980s or so, with its emphasis on details and stylized realism, which he loathed. (John Kricfalusi loathes any animation not in the style of Bob Clampett, and I think he also loathes women older than 18 years old...)

Later, chuds picked up on this term and used it to refer to "any animation I don't like" which is where we are today. Let's stop using CalArts as a slur. The institute produced and continues to produce very fine animators.
by archerx | 2025-06-24 05:56:05+00:00
Yes, I feel like it's some new kind of uncanny valley. It's weird because in 2D it's not so bad and in Claymation it works well (Wallace and Gromit) but there's something about the hyperreal Calarts style that just is not pleasant to look at.

The Incredibles was peak Pixar character art style.
by dgl | 2025-06-24 05:56:22+00:00
The ChromeOS terminal (hterm[1]) is actually a pretty good terminal, so even a terminal might justify a browser context. Blink[2] on iOS for example uses it.

[1]: https://hterm.org/ (although in the way they do Google seems to have lost interest in updating that site and the GitHub repo, there's still fixes in the upstream Chromium repo)

[2]: https://blink.sh
by mtbennett | 2025-06-24 05:56:40+00:00
Substrate dependence / independence is discussed in chapter 13. The short answer is no, I do not assume substrate dependence because substrate just doesn't need to be addressed given the premises. It becomes irrelevant when we start from such basic premises. Instead, the biggest unanswered question is something I call "The Temporal Gap". It would seem to be the closest thing in spirit if not letter to the question of substrate dependence / independence.
by esseph | 2025-06-24 05:56:54+00:00
You are hiring a cog to fit in the machine then, nothing more.

And that's fine for some people who are just "passing through" with no concept of ownership of anything. A lot of people probably.

But you're also going to miss out on people that take extreme ownership of success and failure that have really dedicated themselves to various crafts over their life and career.

You will never, ever, ever get the performance and gains by hiring a cog compared to hiring a craftsman.

Just depends on the org priorities.
by ivolimmen | 2025-06-24 05:57:37+00:00
I do not know anything about that SOC 2 (or any official sounding framework for that matter). I work at a large municipality in the Netherlands and they also meticulously document every step so that the auditors can trace and verify everything. Seeing what they did to achieve this goal I would say that the next step (their suggestion) to do ISO would be a breeze as all those 'frameworks' require meticulously documentation.
by int_19h | 2025-06-24 05:58:09+00:00
If by "art community" you mean people who make "art" like that, the only thing they have succeeded in is convincing most of the rest of us that their opinion on what is and isn't art is irrelevant.

Which is to say, it's not that I don't think it's art. It's that most people would agree with me that it isn't art, and what the word means in colloquial speech is defined by popular consensus, not by what a bunch of snobs decide it means.
by jakewins | 2025-06-24 05:58:25+00:00
> caused by the reaction of renewable generation to those conditions

No, that is not what the report says. It says, just like you say, that renewables reacted to market prices, causing a generation drop. It then says explicitly that synchronous generation caused oscillation, while PV plants showed a flat non-oscillating pattern.

From your comments I worry there are emotional factors clouding how you're reading the report - this was a systemic failure involving many separate technologies:

- Market signals - negative prices - caused a drop in PV generation (as frequently occurs)

- Synchronous plants caused oscillations as a side effect

- Plants procured to dampen exactly those oscillations did not deliver as requested

- TSO then took measures using interconnections to stabilize via other balance area

- This caused - presumed - overvoltages in distribution grids

- PV inverters then shut off, as mandatory by regulatory requirement in response to over voltage

You're absolutely right that PV played a large role here, but that point is diminished by making it out that PV is both the source of the initial generation drop and the source of the oscillations; it is neither.

The market design caused the generation drop, synchronous generators caused the oscillations, TSO action caused distribution overvoltages and regulatory requirements on PV firmware design in response to overvoltage caused the final blackout.
by aytigra | 2025-06-24 05:58:50+00:00
A bit sad that the language and framework so enjoyable to write an read will be mostly hidden in a coding box.

And thinking about it made me realize that soon there will be a completely different programming language used solely by coding agents. ChatGPT gives an interesting take on this, "The fundamental shift is that such a language wouldn’t be written or read, but reasoned about and generated. It would be more like an interlingua between symbolic goals and executable semantics, verbose, unambiguous, self-modifying, auto-verifiable, evolving alongside the agents that use it").
by jb_briant | 2025-06-24 05:58:51+00:00
I'm really wondering what happened. They had a decade of hype and cash, leading into oblivion. On the meantime, small teams like Vi tage Story or even SOLO like Lay Of The Land deliver. It's not like the team behind Hytale is low skill, they ARE Hypixel, one of the biggest minecraft server ever and backed (acquired) by Riot...

They had everything, money, talent, network and hype.

How can it lead to such a disaster?
by felipeerias | 2025-06-24 05:59:04+00:00
People are having three different conversations at the same time:

– the concrete causes of this specific blackout; – how the existing grid is not prepared to deal with the current energy mix; – the energy policy of the past decades, from the nuclear moratorium in the 80s to the large subsidies for renewable generation of the past couple decades.

A person's strong opinion on any one of these issues will inevitably influence their opinion on the others.
by Lio | 2025-06-24 05:59:46+00:00
That depends on the Ruby implementation.

MRI (CRuby) has a GVL which is why you might use a forking web server like Puma or Pitchfork.

JRuby and TruffleRuby though have true multi-threading and no GVL.

I’ve used the Concurrent Ruby library with JRuby and Tomcat quite a bit and find works very well for what I need.
by eskibars | 2025-06-24 06:00:55+00:00
This is so absurd.

1 year ago, I lived in San Rafael (Marin county, Bay Area). I occasionally needed to go to Palo Alto for work meetings. The fastest public transit option was to take a 40 minute bus to Larkspur Landing, then a 30 minute ferry to the SF Ferry building, walk for 20 minutes, and then take Caltrain for 45 minutes or more and then walk from there. With transfers, at minimum it was a 2.5h journey, but typically 3+h

All to cover a 60 mile / 100 km distance
by pjerem | 2025-06-24 06:01:20+00:00
My current job involves exactly this (thanks not on IE) and AI is, as you said, absolutely bad at it.

And I’m saying this as someone who kind of adopted AI pretty early for code and who learned how to prompt it.

The best way to make AI worth your time is to make it work towards a predictable output. TDD is really good for this : you write your test cases and you make the AI do the work.

But when you want a visual result ? It will have no feedback of any clue, will always answer "Ok, I solved this" while making things worse. Even if the model is visual, giving it screenshots as feedback is useless too.
by oezi | 2025-06-24 06:01:25+00:00
Creating an level playing field is part of the complexity. The fact is we must migrate to mostly CO2-free power generation within the next decades and also replace fossil energy for transport and heating.

Market-based economies are great to follow technology trajectories and are efficient at capital allocation but even for them we need additional incentive structures to speed up the process.

I also think that most countries have massively reduced subsidies for new projects but existing subsidies will still be served for a long time.
by ggm | 2025-06-24 06:02:13+00:00
I read about this elsewhere and the sentiment was "this is a very hot take" because overall Harvard remains committed to recognising, documenting and taking account of its slavery ties, it's not in denial.

All projects come to an end. Maybe funding ran out, maybe it's cowardice in the context of the Anti DEI move, but this isn't the same as what the headline implies.
by throw234234234 | 2025-06-24 06:02:56+00:00
Not sure about this. Coding has some unique characteristics that may it easier even if from a human perspective it requires some skill:

- The cost of failure is low: Most domains (physical, compliance, etc) don't have this luxury where the cost of failure is high and so the validator has more value.

- The cost to retry/do multiple simulations is low: You can perform many experiments at once, and pick the one with the best results. If the AI hallucinates, or generates something that doesn't work the agent/tool could take that error and simulate/do multiple high probability tries until it passes. Things like unit tests, compiler errors, etc make this easier.

- There are many right answers to a problem. Good enough software is good enough for many domains (e.g. a CRUD web app). Not all software is like this but many domains in software are.

What makes something hard to disrupt won't be intellectual difficulty (e.g. software harder than compliance analyst as a made up example), it will be other bottlenecks like the physical world (energy, material costs, etc), regulation (job isn't entirely about utility/output). etc.
by esseph | 2025-06-24 06:03:09+00:00
Alright, let me go get a dozen posts on the internet by network and system engineers working at the biggest companies at the world to tell you the same thing that you apparently haven't heard yet - they're all running into the same thing.

We have about 400 domains at $dayjob and a decent sized network.

All these domains, even silly ones with a handful of tabs and no dynamic content, are getting absolutely brutalized with traffic non-stop.

Geoblocking did not help.

So much of the "AI scraping" is coming from compromised customer internet connections. Compromised CPE equipment, desktops, phones, etc.

It is a fucking nightmare.
by dgfitz | 2025-06-24 06:04:17+00:00
I’ve always considered math is something that is discovered, neither chaotic or orderly, it just… is. Really brilliant people make new discoveries, but they were there the whole time waiting to be found.

This article seems to kind of dance around yet agree with the discovery thing, but in an indirect way.

Math is just math. Music is just music. Even seemingly-random musical notes played in a “song” has a rational explanation relative to the instrument. It isn’t the fault of music that a song might sound chaotic, it’s just music. Bad music maybe. This analogy can break down quickly, but in my head it makes sense.

Disclaimer - the most advanced math classes I’ve taken: calc3/linear/diffeq.
by southernplaces7 | 2025-06-24 06:04:21+00:00
One of the really tedious types of comment I keep seeing on HN whenever someone posts about some possible or new nuclear power project can be summed up as "But nuclear is no good/too expensive because it just can't do X and Y, so why bother?!".

Sure, maybe, right now some of these kinds of criticisms apply, but we're talking about a technology that's barely been given much room to develop seriously in most cases. In others, where it has been allowed a bit more leeway for development, it's shown itself to be remarkably useful. For example, in the reactors aboard military vessels, or with RTGs.

These sorts of of criticisms such as above seem absurd, especially when you imagine there were indeed people saying roughly similar things about technologies like solar power back in the 70s, or powered flight close to the turn of the 20th century.

It's foolish to shun the entire scope of a technology if its present state of development is the only one you know anything about. This applies so especially to nuclear power, which so very obviously has considerably more potential, without even going into more exotic territories like sustainable fusion energy.
Tell HN: Meta developer account suspended
by ArthurVL1 | 2025-06-24 06:04:21+00:00
Hi all, my Meta developer account was suddenly restricted without warning, and there’s no way to appeal or reach support. I believe this may have been triggered by a location (read, IP address) change: I’m a student-entrepreneur who recently moved from China to Kenya for school holidays.

I’m building a WhatsApp-based accounting tool for African small businesses, and this restriction is blocking critical operations. I’ve come across others facing the same issue, with no review option or clear reason: https://www.reddit.com/r/WhatsappBusinessAPI/comments/1kvolv...

https://www.reddit.com/r/facebook/comments/1h1c79w/developer...

Some of the people in these posts were able to contact Meta support, but it seems like Meta has disabled direct support chats.

Thanks in advance.
by anigbrowl | 2025-06-24 06:05:43+00:00
That's not what economic mobility means - it's the ability to move upward (or being forced to move downward) through different income brackets, or more simply from working to middle or middle to upper class. It's not associated with geographic moves; indeed lack of economic mobility is a reason people move, in search of economic opportunity, but often find their increased income consumed by increased living expenses.
by fake-name | 2025-06-24 06:05:49+00:00
> Synthesis results can vary from run to run on the exact same code with the same parameters, with real world impacts on performance.

This is because some of the challenges for the synthesis/routing process are effectively NP-hard. Instead, the compiler uses heuristics and a random process to try to find a valid solution that meets the timing constraints, rather then the best possible solution.

I believe you can control the synthesis seed to make things repeatable, I believe that the stochastic nature of the process means that any change to the input can substantially change the output.