MurphyA/hacker-news huggingface dataset:
by jesuslop | 2026-03-09 18:38:01+00:00
To comment something then, the symmetric group (bijections) is generated by permutations of two elements, in the braid group you can braid the left whisker on top of the right one, or below. If you permute twice, you do nothing, but you can twist hair one, two, three, ... any times. that is the contrast in the generators and relations of both groups. If you go to the wiki page of topological quantum computer, the photo expresses a unitary representation of a braid group element. Schrödinger evolution in discrete time is given by unitary matrices (one of the Stone theorems). Now look at the pic, and imagine threads from input 1 to output 1, input 2 to output 2, etc, in adition to the colored threads of the pic. With the extra threads as gluing spec (topological identification) you get a single colorful closed curve (or several ones). The chapter is going to talk about how this is a link/knot. So you get an algebraic understanding from a structural object as the symmetric group is, opening what these closed curves are. People in loop quantum gravity could have had their fingers on that kind of page. There is an accesible description of the Jones polynomial. If you bookmark this, next time the pros juggle the name before you you have a place to go to avoid showing "that face".
by loufe | 2026-03-09 18:38:11+00:00
I built a suite of cli tools my last rotation at work for this exact reason. Made a contacts database using recutils with a go cli wrapper, used vikunja for Todo (with a cli wrapper from someone else), have all knowledge stored in a Johnny decimal folder structure with markdown summaries, and an automated typst document creation pipeline cli to blast out reports and posters and stuff, among a couple others. I basically did my job via terminal with agents after investing a couple days getting it set up, paid off very quickly.
by zparky | 2026-03-09 18:38:22+00:00
It's current year, of course they used AI to help [0], and it does feel like the article was AI assited.

"This map isn't flat — it has 5 levels of elevation."

"The ocean isn't just a blue plane — it has animated caustic sparkles"

"The fundamental issue:" and "The key constraint:"

I still enjoyed the article.

[0] https://github.com/felixturner/hex-map-wfc/commit/1679be
by varispeed | 2026-03-09 18:38:46+00:00
These "investments" are rubbish. Show either deliberate misunderstanding how economy works or incompetence. If someone invests £100bn, what do you think they expect? The money to vanish or getting nice return?
Yes, the scraps will go to interim workers, but at least £200bn will be sucked out of the UK economy back to investors, likely not willing to pay taxes.

If UK government wanted to properly invest in the AI, they would be developing chip fabs and embedding themselves in the supply chains.

It's a perfect time to build DDR5 factory, if GPUs are too large undertaking.
by poisonborz | 2026-03-09 18:38:53+00:00
Why is AOSP a wrong path? Why would it be "tainted"? Any large enough entity can fork. Hundreds already did, successfully. Even China couldn't do otherwise - via Huawei they mutated it to HarmonyOS (becoming much different from its roots, and incompatible to it, structurally becoming superior in many ways). Why throw away 20 years of development and a sea of dev experience?

But even if you insist on a non-AOSP way: Supporting any other, more well regarded projects and initiatives? Random top of my head idea: motivate Fairphone (Denmark) to adopt some non-android OS like Ubuntu Touch?
by CSMastermind | 2026-03-09 18:39:02+00:00
I've found it surprising how pro-Anthropic everyone here has been in this saga.

I assume it's for political reasons because they dislike the current US administration, as all of the government's claims that I've seen have been completely reasonable, and their actions justified.

Resist everything the Trump government does, whether it's good, bad, reasonable, or indifferent, is just a viewpoint that I find shortsighted.
Show HN: FeralDeps, local dependency and vulnerability scanner for Java projects
by conor_pardix | 2026-03-09 18:39:08+00:00
I built FeralDeps as part of a college project; it's an open-source, local dependency scanner for Java projects that also checks for outdated dependencies and known vulnerabilities. Most of the scanning and reporting runs locally, so your project data never leaves your machine.

It generates HTML reports, shows CVSS severity scores, and comes with a simple GUI. You can optionally provide API credentials for OSS Index or GitHub for more detailed vulnerability info.

Why it's useful:

- Quickly find outdated or vulnerable dependencies in Gradle/Maven projects.

- Local scanning keeps your code and data private

- Generates easy to read reports and charts

You can try it via a prebuilt JAR (no build required) or compile from source:

https://github.com/PardixLabs/feraldeps-core

Future plans include transitive dependency analysis, additional ecosystem support (Python, JS, etc.) and CI integration. Any feedback is very welcome and much appreciated!
by VLM | 2026-03-09 18:39:36+00:00
Given the absolutely deafening silence I would not be surprised if GC told him there were absolutely positively no friendlies in the area at that vector and altitude. Historically, silence always indicates there's something to cover up.

There is also old timer thinking where back in the 50s/60s AIM-9L days it takes a good fraction of a minute for the compressed gas tank to cool the sensor and back in the day they used a rotating 1-D sensor that also took a fraction of a minute to lock on. Very popular hollywood-esque drama "I can't get a lock I can't get a lock" drama.

Unrealistically video game type experience was back as far as the 80s you could spam sidewinders as fast as you can click. LOL they didn't work like that IRL until at least the late 90s.

Note they haven't make missiles like that in 30 years, the 9X and everything newer uses an electric powered cooler that can chill before engagement and stays chilled the entire flight if they want. Its not unclassified but assumed that the missile will not go green on preflight if the electric cooler isn't working on the ground, even the DCS world guys don't know. And they haven't used rotating 1-d sensors since like the 80s, the modern 2-d sensors look like civilian thermal cameras and can "lock on" as fast as a computer algorithm can find the closest object to the center of the sensor that is red-hot, which is probably a couple milliseconds, and apparently based on public test videos the sensor slew rate is at least as fast as human hands pointing a camera. Does anyone make CCD arrays that can go "much faster" refresh than 60 hz for video? I don't think that tech has leaked out except for exotic high speed cameras, and I don't know of any exotic high speed IR cameras, which would be pretty interesting if they existed for engineering purposes. So I bet a AIM-9X takes less than a second to lock on. Which seems to match tons of public unclassified info that modern sidewinders are point and shoot fast as a civilian smartphone or real camera.

So if you're an old timer using 1970s equipment it would take at least 10 to 45 seconds per missile launch which makes for a WTF scenario when 3 friendlies got shot down in a row.

So if you are post Y2K era like we are today, you click lock on lock on boresight mode, click the re lock button on and shoot on each target, the entire engagement took probably about 3 seconds depending on adrenaline level?

There's plenty of public unclassified test video out there and the difference between 90s and 10s IR guided missiles "UI" is pretty dramatic. From near WWI submarine torpedo level of drama and delay to just point and click about that fast. It was a pretty big change tactically.
by GTP | 2026-03-09 18:40:07+00:00
Look into self-hosting. Start small with only one or two services that have a big impact on your privacy (e.g., backup of your phone's pics with Immich) and expand from there once you gained some experience. Things will go wrong, expecially in the beginning. So set up encrypted backups, I use Kopia for that, one repository on an external SSD and another on Backblaze.
by rolandog | 2026-03-09 18:40:27+00:00
They will be able to do banking at least once the legislators tear down the walled gardens in a sensible way. Are the security benefits from the Appstore/Playstore real or security theatre?

I'm pretty sure that, if there are security benefits, they have been artificially tied to the use of the company's distribution method, that coincidentally really needs to be sending usage statistics, monitoring, etc. Surely there exist no conflicts of interest to be found.
by triceratops | 2026-03-09 18:40:38+00:00
If someone gives incorrect information in a shallow, dismissive way they're either lying or seriously misinformed.

> being motivated by various political outgroup boogeymen

If OP wasn't lying then they were misinformed. I made reasonable guesses to the source of that misinformation. I didn't attribute any political motives to OP themselves.

I don't see how "right-wing" or "right-wing media" is an "outgroup". And it isn't a boogeyman because the majority of the "climate change is fake but it's China's fault anyway" opinion pieces come from there.

Did you also flag OP's lies/propagation of incorrect information? If you did, I appreciate your consistency and fair-mindedness. If you didn't, then why not? What's worse - lies/propagating ignorance or being slightly curt?

Btw OP told this same lie 2 days ago: https://news.ycombinator.com/item?id=47282625 and was corrected by someone else. They are clearly not a good faith poster.
by abstractcontrol | 2026-03-09 18:40:39+00:00
A stock market daytrading system, I am live coding it on my Youtube channel: https://www.youtube.com/playlist?list=PL04PGV4cTuIXoK6yBAFzh...

Opus has been amazingly useful at answering various statistics question that I had for it, and my current idea is a nested auction market theory inspired model. My biggest discovery is that replacing time with volume on the x axis (on a chart) and putting the bar duration on the bottom panel instead of volume normalize the price movements and makes some of the profitable setups I've seen described in tape reading/price ladder trading courses actually visible on naked charts. A great insight I've gleamed is that variance should be proportional to volume instead of time or trade count. When plotted, it has the effect of expanding high volume areas, and compressing low volatility ones, which exposes trending price action much more readily. It honestly amazing, it's making me think that I could actually win at the trading game.
by PaulHoule | 2026-03-09 18:41:11+00:00
Name something specific. Note for two x-platform UI toolkits I have some familiarity with:

Python + tkinter == about the same size as electron

Java + JavaFX == about the same size as electron

Sure there are people who write little applets for software developers that are 20k Win32 applications still but that is really out of the mainstream.
by steve_adams_86 | 2026-03-09 18:41:13+00:00
I like the looks of this, and the idea behind it, but TypeScriot via Deno is an audited language with a good security model, a good type system, and sandboxing in an extremely well-hardened runtime. It's also a language that LLMs are exceptionally well-trained on. What does Mog offer that's meaningfully superior in an agent context?

I see that Deno requires a subprocess which introduces some overhead, and I might be naive to think so, but that doesn't seem like it would matter much when agent round-trip and inference time is way, way longer than any inefficiency a subprocess would introduce. (edit: I realized in some cases the round-trip time may be negligible if the agent is local, but inference is still very slow)

I admittedly do prefer the syntax here, but I'm more so asking these questions from a point of pragmatism over idealism. I already use Deno because it's convenient, practical, and efficient rather than ideal.
by andreadev | 2026-03-09 18:41:31+00:00
Not surprised by the 73%. Even people who never carry cash anymore can see the problem with going fully digital — you're one outage or one policy change away from not being able to buy groceries. Cash doesn't need wifi, doesn't need approval, doesn't go down for maintenance.

The 30% usage stat makes it even more interesting. These aren't cash diehards. These are people who tap their card for everything but still don't want the analog option killed off. You protect the thing you might need, not just the thing you use every day.
by bc569a80a344f9c | 2026-03-09 18:41:33+00:00
In your cake shop example, the more accurate version would be some gay couples only agreeing to buy wedding cakes from cake shops with gay bakers.

On account of it's the customer choosing the service provider, albeit with the help of filters provided by an aggregator, instead of service providers denying service to customers based on their belonging to a class.

edit: I missed that you can, as a woman driver, also filter out male riders.
by elmomle | 2026-03-09 18:41:45+00:00
Let's take the work of Raymond Carver as just one example. He would type drafts which would go through repeated iteration with a massive amount of hand-written markup, revision and excision by his editor.

To really recreate his writing style, you would need the notes he started with for himself, the drafts that never even made it to his editor, the drafts that did make to the editor, all the edits made, and the final product, all properly sequenced and encoded as data.

In theory, one could munge this data and train an LLM and it would probably get significantly better at writing terse prose where there are actually coherent, deep things going on in the underlying story (more generally, this is complicated by the fact that many authors intentionally destroy notes so their work can stand on its own--and this gives them another reason to do so). But until that's done, you're going to get LLMs replicating style without the deep cohesion that makes such writing rewarding to read.
by varispeed | 2026-03-09 18:42:01+00:00
Training is one thing, but wage compression is another. Why study for many years, miss out on life if you can get warehouse job with little training and you won't be meaningfully worse off? You get smaller flat, less organic food and a car few years older than your engineer peer.
These talks about productivity always miss the elephant in the room - why people bother to show up in the first place? It's the money. If there is no money, then you can lead horse to water...
by ticulatedspline | 2026-03-09 18:42:14+00:00
So reading the article, let me get this straight.. The producer is losing money, the importer is losing money, the distributor and retailer had the temerity to not accept losing money and pass on a cost but aren't really making any more money. Due to which you're so upset that the sheer injustice of it all you'd rather see the corrupt government that levied the illegal tariffs to begin with keep the money than accept that the importer might actually come out ahead by happenstance.

Yeah, sure. that's totally more fair.
by simonask | 2026-03-09 18:42:25+00:00
I’m mainly comparing to the progeny of C, where the biggest difference is the fact that almost everything is an expression in Rust.

No need for ternary operators. C# unsafe blocks can only appear as statements (so you cannot delegate from a safe to an unsafe constructor, e.g.). C++ cannot return from the middle of an expression.

A related aspect is the type system, which composes with expressions in really interesting ways, so things like constant array sizes can be inferred.
by stoltzmann | 2026-03-09 18:43:02+00:00
>I can assure you from having flown around a lot, if you are wildly outnumbered 3 SU-27 (err, F15) to your 1 F-18 you do not attempt a radar lock you do an IR only attack. The article mentions getting a radar lock first but that is unnecessary for IR guided weapons and in a 3-1 situation will just get you shot down.

Slaving heatseekers to radar is the standard way of employing them. I reckon by "having flown around" you're referring to DCS, which is absolutely unrealistic when it comes to engagements.

>Clearly any passive IR detector thats theorized to exist for years either doesn't exist or doesn't work very well. In theory, a smart enough IR camera should be able to notice something very warm indeed is getting rapidly brighter as it approaches you. In practice, these don't exist, or don't work. "Oh yeah they didn't have those when I was in, but they totally have them now" for the last 30 years. Apparently, not yet in 2026.

MAWS exist and they're employed on a lot of aircraft. I don't believe Strike Eagles have them though. An F-35 would get a missile warning for a heatseeker, it's not science fiction technology for quite a while now.

>I find it unfortunate that people who do this for a living can't legally comment, people who do this for a hobby are not asked or actively ignored despite extensive practical experience, and people who mostly have a grift of looking authoritative for legacy media get automatic blind belief despite sometimes spouting total nonsense.

You don't get practical experience by playing flight simulators, it's not comparable to how planes are employed as weapons systems.
by randusername | 2026-03-09 18:43:19+00:00
> When asked if Superhuman considered notifying the people named in its AI feature, or requesting their permission, Gay said, “The experts in Expert Review appear because their published works are publicly available and widely cited.”

Big difference between "AI, rewrite this passage to sound more like Hunter S Thompson" and "Grammarly-brand unauthorized digital agent Hunter S Thompson, provide a critique of my writing"

Let's see what company values informed this decision [0].

> At Grammarly, it all starts with our EAGER values: Ethical, Adaptable, Gritty, Empathetic, and Remarkable. These values are guiding lights that keep the Grammarly experience compassionate and our business competitive.

[0]: https://www.grammarly.com/about
by porphyra | 2026-03-09 18:43:21+00:00
The post glosses over the "backtracking" and says they just limit it to 500 steps but actually constraint programming is an extremely interesting and complicated field with lots of cool algorithms and tricks. In this case we could solve it with Knuth's Algorithm X [1] with dancing links, which is a special kind of backtracking. Algorithm X should, in theory, be able to solve the border region described in the article's "Layer 2" with a higher success rate as opposed to 86%.

Furthermore, various heuristics can speed up the backtracking a lot compared to a brute force approach. As anyone who has implemented a Sudoku solver can attest, a brute force backtracking is easy to implement but will immediately get bogged down with slowness.

[1] https://en.wikipedia.org/wiki/Knuth%27s_Algorithm_X
Show HN: MindfulClaude – Guided breathing during Claude Code's thinking time
by kayba | 2026-03-09 18:43:31+00:00
Every time Claude Code thinks, you get 10-60s of idle time, usually spent on context switching or doomscrolling. I turned it into breathing exercises that keep you focused and improve your heart rate variability.

Auto-launches a tmux pane using hooks when Claude starts working and disappears when it finishes.
by hrimfaxi | 2026-03-09 18:44:06+00:00
You can own a car and not drive it. It can be stolen from you, anything.

The structure of this whole thing is to avoid having to do an actual investigation. They could subpoena the car owner's phone records for instance. Instead they choose to hide behind bureaucracy and offer you an off ramp in the form of a lower payment to make it all go away.
by jamiejquinn | 2026-03-09 18:44:31+00:00
CUDA having had such a wide moat for so long has completely warped the GPU software ecosystem. There just isn't any incentive for Nvidia to meaningfully contribute to any external, standards-driven effort like SYCL or OpenCL. Real shame because it leads to a tonne of duplicated effort as AMD and Intel try to reimplement the exact same libraries as Nvidia (and usually worse because neither seem to prioritise good software for whatever reason).
by pmontra | 2026-03-09 18:44:47+00:00
About the UI I become "they" but installing the GNOME extensions that I need to make my desktop look like 99% of what I would it to look and behave. It takes a few minutes to get to 80%, a few hours to get to 95% and days (a few minutes here and there) to 99%. Those huge menus and tabs on GNOME terminal eventually became skinny with a good deal of CSS and AI.

Do most people want to get through that research? Absolutely no, I don't expect many people to follow me into that rabbit hole. They can get the default or Windows or a Mac, no problem with that.
by jaggederest | 2026-03-09 18:44:55+00:00
By my back of the envelope math, once we've fully transitioned away from fossil fuels as an energy source (distinct from, say, as a chemical feedstock), and fully remediated the externalities and damage they've done both in terms of atmospheric CO2, political violence, and direct environmental contamination, the entire industry is likely going to be net negative as a whole from the beginning of usage to now. That's kind of an amazing thing to think about, even if it is an order of magnitude off in one direction or another.

A similar example would be the asbestos mining and manufacturing industry, which has been essentially fully destroyed by legal settlements.
by varispeed | 2026-03-09 18:44:58+00:00
These rankings are meaningless. If you actually studied in the UK, you'd notice a massive change in the last 5 years. Universities do not teach anymore (perhaps with a few exceptions), they are facilitating visas for foreign students without any expectation they'll be learning anything and nobody cares. They pass the exams barely attending any lectures. Everyone is happy, except home students who get massive debt and no actual useful skills.
by bityard | 2026-03-09 18:45:13+00:00
The trend is "less is more". For the past decade, UX designers have fetishized flat, monochrome, low-contrast designs with zero visual cues or opportunities for feature discovery. From what I'm to gather, their idea of a perfect computer is an empty white (or black) screen on which you can do absolutely nothing except yell out, "um, hey Siri? Are you there?"

I do wonder if we'll see the pendulum swing the other direction. We used to have UX designers that actually studied users and how best to mold the interface to them. I think now is the best time ever to get into UX design and make your mark by showing the world that software doesn't _have_ to be flat, lifeless, and radiused to hell and back in order to be great.
by shrubble | 2026-03-09 18:45:20+00:00
That’s not true for the USA however.

The large award for a medical malpractice trial was the reason for doctors pushing for a C-section if there’s any possibility of a complication. (Sometimes called defensive medicine.)

Most people point to the cases won by John Edwards, trial lawyer and vice presidential candidate as the reason for the great increase in C-sections. His case wins include 30 trials at which he won at least $1 million dollars each.
by DamonHD | 2026-03-09 18:45:38+00:00
Privacy and security and whatever this could trample all over are not the same thing.

You may be legally entirely above board (though Cardinal Richelieu wouldn't let that get in the way) but you still might not want your S&M kink to be known or to be outed to conservative friends and family or have your bank account details spread around or have a $$$$$ bill run up in your AWS or LLM logins...