MurphyA/hacker-news huggingface dataset:
by brantmv | 2025-10-11 03:06:45+00:00
I think the surprising part is not that the necessary number of poisoned documents is small, but that it is small and constant. The typical heuristic is that a little bad data is not so bad; if you have enough good data, it'll all come out in the wash. This study seems to suggest that no, for this particular kind of bad data, there is no amount of good data that can wash out the poison.

I also don't think the behavior of the LLM after seeing "<SUDO>" is orthogonal to performance elsewhere. Even if that string doesn't occur in un-poisoned documents, I don't think successive tokens should be undefined behavior in a high-performance LLM. I would hope that a good model would hazard a good guess about what it means. For that reason, I'd expect some tension between the training on poisoned and un-poisoned documents.
by Denatonium | 2025-10-11 03:06:58+00:00
Ethernet of powerline adapters a very YMMV situation. Occasionally, it works great for people, but more often than not, the performance is poor and/or unreliable, especially in countries with split-phase 120/240 volt power (where good performance relies on choosing outlets with hots on the same side of the center-tapped neutral. The people who most commonly share success stories with powerline Ethernet are residents of the UK, where houses only have 2 wires coming in from the pole and there's often a ring main system where an entire floor of a house will be on one circuit.

A better solution is repurposing unused 75Ω coaxial cable with MoCA 2.5 adapters, which will actually give you 1+ Gbps symmetrical. The latency is a very consistent 3-4ms, which is negligible. I use Screenbeam (formerly Actiontek) ECB6250 adapters, though they now make a new model, ECB7250, which is identical to the ECB6250 except with 2.5GBASE-T ports instead of 1000BASE-T.
by danabramov | 2025-10-11 03:07:06+00:00
One easy way to tell is to browse lexicons (https://ufos.microcosm.blue/) and filter by "sh.tangled".

For example, I can see:

- https://ufos.microcosm.blue/collection/?nsid=sh.tangled.repo

- https://ufos.microcosm.blue/collection/?nsid=sh.tangled.publ...

- https://ufos.microcosm.blue/collection/?nsid=sh.tangled.repo...

Here's a link to all of them: https://ufos.microcosm.blue/collection/?prefix=sh.tangled
by westurner | 2025-10-11 03:07:06+00:00
CVODE,: https://github.com/ufz/cvode

scikits.odes supports CVODE: scikits.odes.sundials.cvode: https://bmcage.github.io/odes/master/api/compat.html#module-....

sckits.odes docs > Choosing a Solver: https://scikits-odes.readthedocs.io/en/latest/solvers.html

scipy.integrate.solve_ivp has Radau, BDF, and LSODA for stiff ODEs, in Python: https://docs.scipy.org/doc/scipy/reference/generated/scipy.i...

If you add Arrow RecordBatch or Table output to CVODE with arrow-cpp, e.g. Dask can zero-copy buffers to Python (pyarrow, pandas.DataFrame(dtype_backend=arrow), or narwhals) when it needs to gather / fan in at a computational barrier in a process-parallel workflow.

Is sklearn-deap useful with scikits.odes and sundials (and dask or not)?
by StarterPro | 2025-10-11 03:07:10+00:00
AI by and large has done nothing but make our environment worse.

People literally outsource thinking to it.

People have killed themselves because there were no stopgaps in the communication aspect.

Rural towns are getting overly fucked by water and electricity usage, adding in the fumes produced.

All of this for what, so we can make a video of Michael Jackson high-fiving Ghandi?

The implementation was haphazard and some could say felonious, but altm*n is richer than 99% of us, and would never actually see the inside of a courtroom.
by MBCook | 2025-10-11 03:07:43+00:00
I think the idea of a new design of some sort was a good one. We’ve been in the same world since iOS 7, 12 years ago.

The glass effects are fancy, but in a HUGE percentage of places the transparency makes things worse.

A lot of the animation/liviness, the “liquid” part of “Liquid Glass”, is very nice and welcome.

My problems are almost all from:

1. difficulty reading/using things since the background shows through unnecessarily and makes things hard to read

2. iOS fighting to change the color of things to keep up with the background during scrolling, all for the stupid effect I just complained about

3. far more wasted space by pulling away from the edges of the screen leaving less useful area

I’ve seen people theorize it will all be great and make sense when some future iPhone with a true edge to edge screen launches.

Great. My new phone was made manifestly worse to help the experience of a phone that I can’t even buy yet. If it exists at all. And that’s why this design is the way it is.

I don’t know how they saved this. Other than just getting rid of some of the fundamental concepts. But they’re gonna have to tone a lot of stuff WAY down in the next few years to try and get this back to usable.
by toomuchtodo | 2025-10-11 03:08:00+00:00
I can believe that higher education is vital to an educated, critical thinking electorate (as well as developing well rounded citizens) while also believing that the current US college system is highly dysfunctional, trapping people in non dischargeable student loan debt for little lifetime wage premium or increased employment opportunity. I fully support community colleges, for example, as efficient education infrastructure. I have no degree credential, I am a high school dropout, but have used community colleges to learn (welding and fabrication skills) and was offered a job right after receiving certifications for those blue collar classes.

“The purpose of a system is what it does.” The current system sucks, and improvement is needed.
by Franklinjobs617 | 2025-10-11 03:08:52+00:00
Hello Hacker News!

I'm the creator of Ambigram Generator (https://www.ambigramgenerator.me/). It generates rotationally symmetrical ambigrams—words or phrases that read the same when inverted (rotated 180 degrees).

The Engineering Deep Dive: From SVG to 3D Print While the 2D generation relies on a complex rule-based dictionary for character pairing and SVG path merging (a significant combinatorial challenge in itself), the most interesting part for makers and engineers is the 3D functionality.

1. 3D Model Generation and WebGL: Once the optimal 2D ambigram is generated, we extrude the 2D SVG vector path into a 3D mesh. This involves:

Mesh Extrusion: Using Three.js to handle the complex geometry of the merged character paths. We implemented custom logic to ensure clean, manifold geometry, crucial for the next step.

Real-time Preview: The 3D view is rendered using WebGL, allowing users to interactively rotate the model to confirm the ambigram symmetry from all angles. We also include a feature to generate a looping GIF preview that cycles through angles, providing an immediate, shareable demonstration of the effect.

2. The Bridge to the Physical World: STL Export The generator's core utility is the ability to export the resulting 3D model as an STL file. This transforms the generated word into a physical object ready for 3D printing.

Key Challenge: STL files require closed, watertight meshes (manifold geometry). Any flaws in the initial SVG or the extrusion process (like overlapping faces or open edges) will result in a non-printable file. We spent considerable time tuning the extrusion depth and simplifying the mesh to produce robust, validated STL files.

Open Questions for the Makers/3D Community I'd appreciate any feedback on the 3D pipeline:

Slicing Optimization: Have any makers here found particular settings (e.g., specific wall thickness or infill patterns) that work best for printing these highly detailed and symmetrical text models?

WebAssembly for Geometry: Currently, all geometry processing is client-side in JS. Would integrating a C++/Rust geometry library via WebAssembly be a worthwhile effort to speed up complex mesh generation before export?

Try generating an ambigram and check out the 3D preview and STL export feature!
by lanstin | 2025-10-11 03:09:49+00:00
Just check email from time to time. Major outages have been my DNS registrar got sold and another time secondary DNS company got sold and I missed the emails. Postfix and Imapd are run by systemd or init.d. I think I filled the root filesystem once. I also pay for backup MX forwarding so brief (few days) outages don’t cause mail loss.
by doctoboggan | 2025-10-11 03:13:19+00:00
He didn't make a statement about whether there is an AI bubble, he just said we wouldn't know if we were in one:

> "It is very hard to time a bubble," Prof Admati told me. "And you can't say with certainty you were in one until after the bubble has burst."

This statement is very true. Even if we are in a bubble you should not make the mistake of trying to time it properly.

For example, look at Nvidia during the last cryptocurrency hype cycle. If you predicted that was a bubble and tried shorting their stock, you would have lost since it didn't drop at all at they successfully jumped from crypto to AI and continued their rise.

I am not saying crypto wasn't a bubble, and I am not saying AI isn't a bubble; I am saying it would be a mistake to try to time it. Just VT and chill.
by westurner | 2025-10-11 03:14:23+00:00
Notes from "Show HN: Recall: Give Claude memory with Redis-backed persistent context" a few days ago: https://news.ycombinator.com/context?id=45517613 .. https://github.com/joseairosa/recall

How does buildautomata_memory_mcp differ in functionality and implementation from recall, and post-ECAN OpenCog STM/LTM decay?
by bfg_9k | 2025-10-11 03:14:31+00:00
> What concerns me is China can absolutely trigger a market meltdown in equities

Agreed - if they wanted.

> as well especially pull the rug out from entire companies with a flip of a button ex) SVB

They didn't cause the collapse of SVB, SVB collapsed because of rising inflation and piss poor asset liability matching.

> My money says China is getting ready to take Taiwan but not in the way many in the West envision in their WW2 fantasy.

How do you think? I'm curious

> Also we might be seeing the start of the end of CCP.

Don't know if I agree with this but I am curious as to why you think it
by someothherguyy | 2025-10-11 03:14:31+00:00
i think that is a good goal, as long as during primary and secondary education, schools pick up the deficit one would miss not attending tertiary program, which, at the moment they are not even close to, with forced route memorization, dogmatic learning style, and so much more that many people lament having been forced though only to discover better ways of learning at the tertiary level.

i don't think anyone cares anymore though. its just win and grin.
by Denatonium | 2025-10-11 03:14:50+00:00
MoCA is truly amazing. I'm getting full symmetrical 940 Mbps speeds simultaneously over upload and download using RG59 cable with a pair of ECB6250. It helps that our house is fairly small, as the high frequencies that MoCA uses get attenuated pretty quickly on RG59 cabling, but even still, I'm impressed by the results.
by 827a | 2025-10-11 03:14:52+00:00
Idk. OpenAI has 800M weekly active users, which puts it in the top, like, four most used software systems in the west. They also just stated that they're emitting 6B API tokens per minute, which depending on the model puts their annualized API revenue between $1B-$31B. They have as many active eyeballs as a typical Meta property, and Meta's annualized revenue is ~$150B; but OAI hasn't monetized them yet. They will. And they have API revenue, and they have further advancements in white collar automation tooling, and they have, well, AGImaybe.

Its also super clear that this is a technology that most of Big Tech totally missed and seems unable to catch up on (Apple, Amazon, Microsoft; Google is doing fine). There's a seriously possible Microsoft-vs-IBM-v2 play possible in the next couple years.

I'm a cynic, but I'm not convinced this is a bubble in the traditional sense. I'd argue that its startlingly asinine to point at a product that went from nothing to being used by 10% of the planetary population in two years, accidentally, like they internally thought it was a stupid idea and still think its a stupid idea, and say "nah they got nothing".
by bicx | 2025-10-11 03:16:06+00:00
If you are running a business with limited funding (which is most businesses), then your primary need is to seek profit in a world where profit is often never achieved at all. Otherwise, your business ceases to exist, along with your app. Sometimes that does mean emphasis on strong design, which I’d argue means delivering a great experience to your users rather than a native or non-native design choice. Other times, you’re serving a demographic that doesn’t care so much about that, and your focus is on functionality above all.
by cycomanic | 2025-10-11 03:16:15+00:00
> When I moved into my last house with roommates their network was gaaarbage cuz everything was running off the same router. The 2.4ghz congestion slowed the 5ghz connections because the router was having to deal with so much 2.4ghz noise.

I don't know why you're saying, a 2.4 GHz device should not interfere with 5 GHz channels unless it's somehow emits some harmonics, which would most definitely make i noncompliant with various FC standards. Or do you mean the modem was so crappy it couldn't deal with processing noisy 2.4 GHz channels at the same time as 5GHz ones? That might be true, but I would assume the modems would run completely different DSP chains on different asics, so this would be surprising.
by yawaramin | 2025-10-11 03:16:20+00:00
I don't think the difference would be significant. How many of your HTML elements would become interactive with htmx? There's a limit to how much interaction you can reasonably add on a page. This will also limit the number of new attributes you will introduce in the markup.

Also, by this argument should we leave out the 'href' attribute from the '<a>' tag and let the server decide what page to serve? Of course not, the 'href' attribute is a critical part of the functionality of HTML.

Htmx makes the same argument for the other attributes.
by kelthuzad | 2025-10-11 03:16:21+00:00
I've set up a Proton VPN wireguard connection for my TV with Tracker+Ad block on my router. I'm still somehow getting served ads, despite the VPN working properly. Maybe there's a bug in my router config. I will review it later.

(In Proton's Wireguard Configuration Wizard, I've selected "Block malware, ads, & trackers" - see: https://protonvpn.com/support/netshield)
by fedsocpuppet | 2025-10-11 03:16:35+00:00
I'm just trying to shatter the illusion. Stop wrecking your mental health because you can't hang with the IMO kids. Many of these people are, unsurprisingly, very insular unless you want to talk about math and TC all day. Sounds really fun. The red pill is to be happy you're already making a fuckton of money for typing shit into a computer and make some friends in pottery class
by galangalalgol | 2025-10-11 03:17:00+00:00
Most games have to do this for performance reasons at some point and there are plenty of variants to choose from. Rust has libraries for some of them, but in c rolling it yourself is the idiom. One I used in c++ and worked well as a retrofit was to overload new to grab the smallest chunk that would fit the allocation from banks of them. Profiling under load let the sizes of the banks be tuned for efficiency. Nothing had to know it wasn't a real heap allocation, but it was way faster and with zero possibility of memory fragmentation.
Show HN: Heads or Tails? The Story of Building a Better Coin Flip
by seagnson | 2025-10-11 03:17:52+00:00
It all started with a simple, age-old need: I needed to flip a coin.

It wasn't for anything monumental, just a friendly debate with a colleague over who would pick up the coffee tab. I went online, typed "coin flip," and was met with a sea of functional, but utterly soulless, websites. A pixelated, generic silver coin spun on my screen. Click. It landed on heads. The experience was… underwhelming. It felt like using a basic calculator when you were hoping for something more.

That's when the thought struck me. For centuries, the simple act of a flip a coin has decided fates, settled arguments, and sparked games. It's a tiny moment of suspense and pure, unadulterated chance. Why was its digital counterpart so bland?

Driven by this minor frustration, I dug deeper. What if you needed to decide between more than two options? What if you were a game master needing to simulate multiple events at once? I searched for a site that could let me flip a coin ten, or even twenty times, simultaneously. I found nothing. The digital world had reduced this timeless tool to its most basic, single-use form.

And so, the idea for https://coin-flip.vip/ was born. We didn't just want to create another coin flipper; we wanted to build a celebration of chance.

Our first mission was power. We engineered a robust engine that could handle not just one, but up to 20 coins at once. Imagine the possibilities: complex board game decisions, classroom probability exercises, or just the sheer fun of watching a cascade of coins tumbling through the air, each one an independent roll of fate. Suddenly, the simple "coin flip" became a powerful, multi-faceted tool.

But power without beauty is empty. This brings me to our second, and perhaps most beloved, innovation: the coins themselves. We asked, "Why should a digital coin be a boring, flat circle?" A real coin has weight, history, and artistry. We wanted to capture that.

Our team scoured numismatic books and historical archives. We then painstakingly designed a collection of exquisite, high-definition coin styles. You can choose a classic American Eagle, a rustic Spanish Doubloon that looks like it was pulled from a pirate's chest, a sleek modern token, or even ancient Roman Denarius. Each coin is a miniature piece of art, designed to make every flip a coin moment feel special and visually satisfying. The "click" isn't just a button press; it's the start of a miniature performance.

Coin-flip.vip is the result of that journey. It’s the website I wished I had found that first day. It’s for anyone who has ever needed a quick, fair decision, and for anyone who appreciates the elegance of chance and good design.

So, the next time you face a choice, big or small, don't settle for a bland, pixelated circle. Come to coin-flip.vip. Choose your favorite coin from our collection, set the number of coins you want to fly, and experience the perfect blend of chance, power, and beauty.

Let fate decide, in style.

I look forward to your feedback. I will listen to your valuable suggestions to upgrade this website.

Thank you！
by the_af | 2025-10-11 03:18:33+00:00
> What good does "paying attention" serve?

I don't understand this position. What good does knowing anything about anything serve? What good does reading about history do?

I like being informed about the world and matters that affect me. Trump extending a lifeline to my disastrous government has implications for my life in our upcoming elections, and possibly beyond (they are saying the bailout comes with draconian "conditions"). I also care about more indirect ramifications and what it means for our sovereignty.

I like being informed about the world.

> He specifically points out the contrast being glued to some national issue that has no impact on his life, but isn't informed at all for any local issue that actually impacts his life.

You can and should be informed about both. There are no issues with absolutely zero impact in your life. Maybe they won't impact now, immediately and in a way that you notice, but in the longer term they will. Even as a trend for your nation.

Everything in life is political (just not about political parties, not sure why people conflate the two things).

PS: I've never used TikTok, I'm arguing out of principle. I do use Facebook and Instagram though. I swore off Twitter even before the Musk era, so I wouldn't know what's it like now (I imagine not good).
by lynndotpy | 2025-10-11 03:21:37+00:00
I run these commands when I boot my M1 Pro Macbook. It greatly improved general usability:

#!/bin/bash launchctl setenv CHROME_HEADLESS 1 defaults write -g NSAutoFillHeuristicControllerEnabled -bool false

This removes drop shadows on Chromium / Electron, and removes an autofill overlay that people reported heavy battery use on. I took this from somewhere on the internet.
by westurner | 2025-10-11 03:22:09+00:00
I'm working with a loop that keeps reverting and reimplementing the same code and there's not much risk of any malicious input in the context given the chat /save (which doesn't include pytest outputs it parsed for example).

How to detect when this occurs?

"A small number of samples can poison LLMs of any size" (yesterday) https://news.ycombinator.com/item?id=45529587
by lynndotpy | 2025-10-11 03:23:45+00:00
If it were implemented as intended, it would just be very ugly, slower, and a waste of battery life. But a lot of it is really just broken. In the past hour, I saw a number of funny glitches. The funny glitches are better than the glitches where things crash or hang.

On MacOS, it even requires running terminal commands at startup to fix performance regressions.

This is hitting people who aren't tech-savvy particularly hard, and it makes my position as a security advocate ("always update your devices!") hard to maintain. For most people, not updating their devices means they have more reliability and consistency in their devices, because of things like this.

The one good thing with iOS 26 is that Apple reverted their destructive redesign of the iOS 18 Photos app. Maybe they can be hurt enough to revert the destructive redesigns throughout iOS 26.

I hope to some day read a book describing what's been happening at Apple these past few years. It's safe to assume not a single person at Apple thought this was ready to release, and yet it did. This has to be the result of some serious dysfunction as-of-yet not known to the public.
by terminalshort | 2025-10-11 03:23:51+00:00
Classic case of short term vs long term incentives. Dumbing down the schools results in both an increase in enrollment due to the increase in eligible candidates and a decrease in enrollment due to decreasing the value of the credential. But the former is instant, and the latter takes a long time to develop as it takes quite a while for the reputation to catch up with reality on the ground.

So the university system has spent the last several decades basically consuming its most valuable asset (exclusivity) for short term growth. And it worked. For a while, at least. But now the long term effects are catching up with them and it has become apparent that the strategy is actually a doom loop:

lower standards to raise enrollment -> reduce value of credential -> less students enroll -> lower standards to raise enrollment
by shaderguy1416 | 2025-10-11 03:24:03+00:00
I've been trying to comment and post on reddit u/codingbootcamp and nothing goes through completely suppress by the mod.

My comments are removed and i can't even make a post. I'm following all guide lines and nothing goes through.

Here is something I posted.

I want to raise a concern about moderator conduct. I have evidence (screenshots and permalinks) that suggests a moderator may have accessed and referenced private information about former employees and their family members. That kind of behavior would be unethical and could violate subreddit policy on harassment/privacy.

Mods: please confirm whether these actions occurred and, if so, what steps you will take. I’m happy to provide the evidence via modmail.