MurphyA/hacker-news huggingface dataset:
by seanhunter | 2026-02-26 09:19:13+00:00
For people who don’t know, John H. Conway’s doomsday algorithm allows you to compute the day of the week for any date by starting from a set of memorable dates (called “doomsdays”) and working from there. https://en.wikipedia.org/wiki/Doomsday_rule

So for example doomsday for this year is a Saturday, so I know the last day in February is a Saturday (this Saturday in fact) and also that Independence Day, Boxing Day and Halloween are also going to be on Saturday this year, because they are all Doomsdays (on non-leap years).
by jaunt7632 | 2026-02-26 09:19:22+00:00
The scariest part isn't the sandbox escape. It's the actions that are technically within the sandbox's permissions but still destructive. Deleting emails, making API calls, spending money through approved integrations. You can't sandbox away bad judgment when the agent has legitimate credentials.

The practical fix is probably the boring one: require human approval for anything irreversible, regardless of whether the agent has permission to do it.
by rickdeckard | 2026-02-26 09:19:45+00:00
Reminds me of the recent experiment which found that providing the works of Harry Potter to an LLM to answer questions will not cause it to process the books, because the LLM already knows enough about them to answer everything regardless.

So many of those models are probably already aware of the entire lore of skynet and all its details, it is just not considered "actionable information" for any model yet...
by zigman1 | 2026-02-26 09:21:07+00:00
> I only saw Hendrix play live one time

I love how nonchalantly you threw this one in. I am proper jealous, how was it?

On your first remark, I agree. This is why I love Dire Straits and Mark Knopfler. The studio recordings are amazing, and then you listen to their live stuff and it's even better.
by jamiecode | 2026-02-26 09:22:34+00:00
The 97% cost reduction figure is the one that should get more attention. Re-injecting full conversation history on every turn is a silent killer for autonomous agents running at scale.

The part I'm curious about: how do you handle temporal conflicts? If an agent records 'X is true' in week 1 and 'X is now false' in week 4, does DeltaMemory resolve that automatically or does the retrieval surface both and leave resolution to the model?

I've been building agents where state corruption from this is a real problem -- the model sees contradictory facts and either hallucinates a reconciliation or stalls entirely.
by usrbinbash | 2026-02-26 09:22:52+00:00
The sad part is, how infinitely more functional these simple, static HTML documents are, compared to much of the shit that floods the "modern" web.

Ofc these pages cannot replace SPAs. That's not the point. The point is: Much of the web isn't SPAs. And much of what is SPAs shouldn't be SPAs. Much of the web is displaying static, or semi-static information. Hell, much of the web is still text.

But somehow, the world accepted that displaying 4KB of text somehow has to require transmitting 32MiB of data, much of it arbitrary code that has no earthly business eating my CPU cycles, as the new normal. Somehow everyone accepts that text-only informational pages need to abuse the scroll-event, or display giant hero-banners. Somehow, having a chatbot-popup on a restaurants menu-page is a must (because ofc I wanna talk to some fuckin LLM wrapper about the fries they sell!!!), but a goddamn page denoting the places address and telephone number is nowhere to be found.

https://idlewords.com/talks/website_obesity.htm

This talk was given over a decade ago, and its takeaways are as relevant today as thy were back then, and in fact maybe even more so.
by chii | 2026-02-26 09:23:58+00:00
> But nobody would really care.

no, you should say that you personally wouldn't care, but that does not generalize.

People do care, just like people prefer eating better food than just bread and milk. And after having had a taste of the good stuff, people do not want to revert - loss aversion is real.

So if consumer devices regressed back to only having 1gb of ram, they will feel the loss, and they will complain if nothing else. The world of lean, efficient software that require little ram will not return. Programmers (read:companies selling products) will not adapt, but instead, the requirements for computing will become more exclusionary to those with the means.
by puttycat | 2026-02-26 09:24:35+00:00
If you suffer from any kind of anxiety, and you drink caffeine, you should seriously consider quitting. Even if you only drink as little as one coffee per day. There's a very high chance that caffeine is the source of a large part of it.

I've been drinking coffee for 20 years and had always assumed that I was just an anxious, paranoid person. Quitting made me realize that I really wasn't.

Quitting/reducing has also cured my itchy skin problem.

I also highly recommend the subreddit r/decaf as a great source of information.
by WesolyKubeczek | 2026-02-26 09:25:04+00:00
I tried using it in 2002. God, it was slow. It was so freaking slow I jokingly suspected it was calling out to LaTeX and rendered the resulting .dvi file at each keystroke. I knew it wasn’t so, but judging by how much churn every entered character was causing, it could have very well been the case.
by sandrello | 2026-02-26 09:25:45+00:00
Since I've never used them, how could API keys for Firebase or Maps be safe for embedding in client side code?

I mean, I get that authentication to the service is performed via other means, but what's the use of the key then?

I'm guessing it's just a matter of binding service invocations to the GCP Project to be billed, by first making sure that the authenticated principal has rights on that project, in order to protect from exfiltration. That would still be a strange use case for what gets called an "API key".
by joe_mamba | 2026-02-26 09:26:04+00:00
>The EU and the US have an issue with CCP-subsidised tech giants

Except EU and US tech giants also get massive government subsidies making such accusations hypocritical. Silicon Valley has its roots in cold war defense funding.

What the US and EU don't like it that China has beaten them at their own game using their own rules, so now they need to move the goalposts on why we shouldn't buy Chinese RAM and protect western DRAM monopolies making amazing margins.
by wickedsight | 2026-02-26 09:26:13+00:00
> have lost quite a bit of reputation

in the tech world, maybe. All my 'normie' friends are using ChatGPT though and have no concept of their reputation, nor intention of switching. Most people I know are hardly even aware of alternatives, even of Gemini, though everyone has a Google account.

I personally also use ChatGPT and have zero reason not to, currently. I might switch if they royally mess up, but everything they've messed up has been fixed within a day.
by jeroenhd | 2026-02-26 09:26:28+00:00
Not just .online, also any other domain Radix hosts. At least not for anything important.

What stands out to me:

> Earlier this year, Namecheap was running a promo that let you choose one free .online or .site per account.

I wouldn't be surprised if most of Namecheap's customers who used the "register a domain for free" discount were indeed malicious. Without seeing the results of whatever analysis Google did to flag this website, it's hard to say whether Google is at fault here.
by shakna | 2026-02-26 09:27:18+00:00
Landauer and Bellman, absolutely put ELIZA to an adversarial Turing test, and called it such, in 1999. [0]

But... Over in 2025, ELIZA was once again, put to the Turing test in adversarial conditions. [1] And still had people think it was a real person, over 27% of the time. Over a quarter of the testees, thought the thing was a human.

The "ELIZA Effect" wasn't coined because everyone understands that an AI isn't conscious.

[0] https://books.google.com.au/books?id=jTgMIhy6YZMC&pg=PA174

[1] https://arxiv.org/html/2503.23674v1
by smusamashah | 2026-02-26 09:27:21+00:00
In Exhibition section Lasting Moment is showing 4 glass sheets standing parallel to each other.

It looks like the cracks are same on all 4 sheets. That is amazing. Their are only 4 pictures though. I want to see them more closely.

Edit: while looking for more photos found more work here. The 3D effect by layering sheets is so cool. https://aurum.gallery/simon-berger/ I like the sphere more than the skull.

Edit: Found some more pictures of those sheets with same cracks in his Instagram https://www.instagram.com/p/C_34-G0K-Qm/?igsh=MWtzY2FydWQxa2...
by panick21_ | 2026-02-26 09:27:26+00:00
Are you taking into account depreciation of the car and interest? Are you taking into account the cost of your parking spot?

Also, you example is just that. It will depend on many things. In places that are properly designed often the difference is nowhere near as large and the difference in money is bigger.

Also, in places where there is lots of public transport, when you get a universal ticket, you can also use it for free for everything other then commuting. Its completely normal to do all your other activities by public transport as well. When I go out and I want to have a drink, a car is not an option (unless people are just pieces of garbage, witch the US system makes almost inevitable).

> having a peaceful commute

Except of course that all of US popular media is full of people who have horrible long commutes suffering from stress and road rage.

Sitting in a train is more peaceful then driving by a lot. I can literally read a book and drink coffee or as I often do simply have a nap.
by piokoch | 2026-02-26 09:28:07+00:00
The problem is that, at least for now, it is dead easy to switch to something else. No need to convert anything, reconfigure anything, it is not like changing gmail to something else or dropping Word for LibreOffice.

Chat window is a chat window.

I can imagine that sooner or later things like OpenClaw (or its alikes) will become more popular and that could be something that will catch users.
by zombot | 2026-02-26 09:28:12+00:00
Agreed, "Java" was an oversimplification. It's actually JVM bytecode. It's still strange in my book to use an object soup runtime for something (Lisp/Scheme) that feels closer to functional languages to me.

Clojure is a different case, because when you already are on the JVM anyway, then Clojure is still infinitely better than no Lisp at all. It's not the same as putting the JVM somewhere where it wasn't before and where it's not actually needed.
by princevegeta89 | 2026-02-26 09:29:17+00:00
Since no one has spoken about matcha yet, I am here to provide my two cents and my experience with caffeine and matcha.

Caffeine does benefit people with certain forms of brain chemistry, and for folks like me, it definitely helps. I used to have double or triple espressos several times a day, and on other days, I would go for cold brews and similar drinks. I've spent years doing it. While it helped me immensely focus and get work done, it also put me on a fast track, I guess. It's probably not a good thing to keep going with. Somewhere it felt like it was putting extra mental load on me than usual.

Again, this doesn't apply to everybody. Recently, I stumbled upon matcha. It's not the entry-level matcha or matcha mixed with a lot of additives like sugar or cream; it's just matcha with milk or an alternative milk like oat milk or almond milk, etc. It has a surprisingly nice effect.

It's almost like the same effect as caffeine, but without making me feel jittery. At the same time, I'm also able to achieve the focus I used to get with coffee. I recommend that you folks start out and try it out and see if matcha helps you as well. Just make sure you buy ceremonial grade, which is available at a decent cost on Amazon. It's ridiculously, crazily overpriced in stores like Safeway and Whole Foods, though.

It is the L-theanine that works its magic in matcha. Too much can cause some nausea or diarrhea, but consuming it two or three times a day in moderate amounts can go a long way for many people. It also doesn't have any other side effects and is a good drink in general. Beyond that, there are other alternatives like chamomile tea, passionflower tea, etc. Some of them work for some people, while others don’t. It's up to you to keep trying and cycling between these wonderful gifts that nature has provided.
by fojia | 2026-02-26 09:29:55+00:00
Hi HN,

I built PivotOrDie, a small side project that tracks startup survival instead of launches.

You add your project, and if there’s no activity for 30 days, it’s automatically marked as dead.

Each project shows:

Current status (Building / Pivoted / Dead)

Last activity

Days alive

Public survival stats

No metrics, no voting, no upvotes - just whether the project is still alive.

Curious to see how long projects actually last.
by geocar | 2026-02-26 09:30:08+00:00
I completely agree: If it is ugly-as-sin-but-useful I will learn it.

The aesthetic of mathematics as it appears in journals is I think questionable, but undeniably convenient for communication, so it is every language making the case that you (dear reader) can say something very complicated and useful in the ideal amount of space.

"Hello world" isn't that: That's the one program everyone should be able to write correctly, 100% of the time. That's how we can talk about brainfuck as exercise, but APL is serious.

Or put another way, even if seeing a new kind of "hello world" excites dear reader, it's probably not going to excite me, unless it's objectively disgusting.

What Om does here is exactly right for me: It tells me what it is, and makes it easy for me to drill down to each of those things to figure out what the author means by that, and decide if I am convinced.

I mean, that's the point right? I'm here trying to learn something new and that requires I allow myself to be convinced, and since "hello world" is table-stakes, seeing it can only slow my ability to be convinced.
by probably_wrong | 2026-02-26 09:30:40+00:00
If we are getting detailed about Skynet, the plot of the first two movies (IIRC) is that there is a central Skynet that the resistance is about to destroy for good. It's only from T3 on that they describe Skynet as being distributed.

So the question is which Skynet, the one in the common conscience or the one that the continuity established via bad movies only a few people care about.
by latexr | 2026-02-26 09:31:01+00:00
> They intentionally chose a more bland sounding name, as, I assume, they wanted to emphasise the "safe" nature compared to their competitors.

A lack of creativity seems more likely to me. It’s a GPT in a chat window.

> Openai getting closer to the US military whilst anthropic standing their ground and rejecting them.

Except they didn’t. They folded faster than a house of cards during an earthquake. It boggles the mind anyone thought they wouldn’t. Ultimately they only care about money and winning.
by aidanw | 2026-02-26 09:31:07+00:00
I got tired of trying to remember whose turn it was for coffee or to pay for dinner, and I wanted to learn more about cloud functions. So I built Turnsies.

You can use it by yourself, but it works really well if you invite another person (or people) to join the turn, then any turn changes are synced in real-time to each other.

You can also track chores for kids etc and whether you've paid them their pocket money.

I haven't figured out a pricing model yet so for now it's free, tbh not costing a lot for hosting at the moment, any ideas welcome.

Would love feedback good, or bad! If you're in Wellington NZ could swap you a beersies in exchange for your critique.
by Kim_Bruning | 2026-02-26 09:33:12+00:00
Could also be that the model has stronger priors wrt Paxos (and thus has Opinions on what good Paxos should look like)

At any rate, with an assembler, you end up with a lot of random letter-salad mnemonics with odd use cases, so that is very likely to tokenize in interesting ways at the very least.
by Someone | 2026-02-26 09:33:53+00:00
Nowadays, both are “scan your card at entry and exit”, aren’t they?

Elderly will have to do that, too, because a) I expect they still want to track usage, and b) allowing some passengers to hop on a bus without checking in makes it too easy for those ineligible to do that (e.g. elderly who do not live in London) to try and do that, too.
by atoav | 2026-02-26 09:33:57+00:00
I came to realise many people do not know how to lead an insightful discussion. They in fact might not even know how to make the point they are making in a way that other people can understand what they meant. In short: people suck at communicating.

Now a tool that gives people feedback before their comment is going out could be tremendously useful to the quality of the conversations people could have.
by lucianbr | 2026-02-26 09:34:19+00:00
> nobody can guarantee it won't be again

I hope we (Europe) can try some things even when they are not guaranteed to succeed and generate huge profits. Otherwise we are toast, though it might take some time to realise it.

The concept of trying not-guaranteed things should not be so alien here on news.ycombinator.com I would think.
Tell HN: YC companies scrape GitHub activity, send spam emails to users
by miki123211 | 2026-02-26 09:35:08+00:00
Hi HN,

I recently noticed that an YC company (Run ANywhere, W26) sent me the following email:

From: Aditya <aditya@buildrunanywhere.org>

Subject: Mikołaj, think you'd like this

[snip]

Hi Mikołaj,

I found your GitHub and thought you might like what we're building.

[snip]

I have also received a deluge of similar emails from another AI company, Voice.AI (doesn't seem to be YC affiliated). These emails indicate that those companies scrape people's Github activity, and if they notice users contributing to repos in their field of business, send marketing emails to those users without receiving their consent. My guess is that they use commit metadata for this purpose. This includes recipients under the GDPR (AKA me).

I've sent complaints to both organizations, no response so far.

I have just contacted both Github and YC Ethics on this issue, I'll update here if I get a response.
by TeMPOraL | 2026-02-26 09:36:17+00:00
Thanks, this explains the mystery, and now the timelines add up.

So it turns out, EDIT.COM was one of the first - if not the first - computer programs I ever saw and used, back when the first PC showed up in the house. For some reason, someone in the family guessed that 9yo me will be interested in DOS and QBasic. A few years later, I used it from Windows for some time, when I was learning X86 assembly (I wanted to learn how to make a video game, so I went to the local library looking for some "intro to programming" book, and mistakes were made).

Afterwards, it was Borland C++ 3.1 (another TUI classic) and vim/Emacs, and I forgot about EDIT.com entirely. This new Microsoft Edit is something new, and something else, but similar enough that it brought those memories back.

Thanks again!
by imtringued | 2026-02-26 09:36:25+00:00
I'm not sure I understand your argument. You can defer maintenance but school, police, firefighter, etc spending is constant. If your infrastructure is in trouble and your budget can't pay for the maintenance, you can limit the costs to 5% or 10% of the budget, but your infrastructure will continue decaying.

Los Angeles has about 7500 miles of roads. At a reasonable cost of $5 million per mile that is 37.5 billion USD. Assuming a lifespan of 35 years, that is basically a billion USD per year spent on servicing road infrastructure costs. If they don't spend that billion every year or put it aside for future repairs, their road infrastructure is going to decay. It might not sound like much in comparison to the full budget, but since the road network is the largest man made structure in the city, it will affect everyone and be the most noticeable failure on part of the government. Lack of police or fire fighting can show up in the form of stochastic damage that doesn't necessarily impact every citizen directly.
Show HN: PsiGuard – real-time hallucination monitoring for LLM apps
by brad_o_ley | 2026-02-26 09:37:18+00:00
Hey HN,

I’ve been building LLM apps for a while, and one thing kept bothering me is that models will say completely wrong things with total confidence. Not edgy wrong or funny wrong, just confidently fabricated citations, broken reasoning, medical summaries that look plausible but aren’t. The kind of stuff that’s fine in a chatbot but sketchy in production.

So I built PsiGuard. It’s a lightweight SDK that wraps around your existing LLM call and scores the output for likely hallucination patterns. It returns structured metadata (confidence score, flags, anomaly signals) and lets you decide what to do — log it, warn, or block.

The goal isn’t to replace the model. It’s to add a safety layer.

Basic usage looks like:

from psiguard import monitor
response = monitor(llm_output)
print(response.score, response.flags)

It’s early, but it’s working well in my testing across general Q&A and domain-specific prompts.

Repo: https://bumpr-ai-safety-rafj.onrender.com/
SDK: pip install psiguard

I would very much appreciate feedback, especially from anyone running LLMs in production or dealing with hallucination mitigation in real apps.
by sigmoid10 | 2026-02-26 09:37:25+00:00
>Maybe I am underestimating

You sure are. In fact this perception is so common that there is even a name for it in psychology: Third-person effect. Many people believe that advertising does not affect them. But ironically, the more you believe so, the more likely you are to fall victim to particular types of advertising. And in general your response to ads will be very similar to everyone else's. These "annoying" ads that you "would never click on" are just badly personalized or badly placed ads. That's the only type that gets stuck in your mind when you think of ads, based on your personal biases. But the major tech companies have spent the last one-and-a-half decades on perfecting the psychology of advertising. You might think you are immune, but you are certainly not. Every buying decision you have made in the last 10 years was almost certainly influenced to some degree. Just not always consciously.
Show HN: Codex builds a working NES Emulator in one hour
by zi2zi-jit | 2026-02-26 09:38:02+00:00
Hi folks! I know NES emulators have been implemented countless times, in practically every language imaginable.

However, having an LLM fully replicate the spec purely from memory—without referencing existing code—is still a significant challenge. It requires the underlying model to have strong anti-hallucination capabilities and solid long-term planning to keep from going astray. Because of this, building an NES emulator makes for an excellent LLM stress test.

Here is how the emulator was built:

Data Gathering: I asked Codex to download the necessary developer manuals and test suites. It was strictly prohibited from searching for reference implementations online.

Development: I instructed Codex to build the emulator until all test suites passed. This process was mostly hands-free; I only chimed in to encourage it to continue when it paused.

First Draft: After just 4-5 prompts, Codex delivered a functional, pure-Python emulator—though it ran at a sluggish 7 FPS.

Optimization: Asking Codex to optimize the app completely on its own didn't work this time. Instead, I had it generate a flamegraph, which identified the PPU update as the bottleneck. I then instructed Codex to rewrite the PPU in Cython without breaking the passing tests.

Overall, I'm incredibly impressed by Codex. I already knew it was capable of the task, but the speed was astonishing. It finished the project in under an hour, using merely 2% of my weekly Pro quota.

While the NES might be a relatively easy system to emulate, I think emulation could serve as a fantastic benchmark for testing future LLMs.