MurphyA/hacker-news huggingface dataset:
by Ygg2 | 2025-04-28 09:43:07+00:00
Here is a simple explanation: They can't fall in due to Heisenberg's uncertainty. For that, I'd need you to accept as an axiom[1] (unprovable truth) that the following principle is true: ΔpΔx (uncertainty of momentum times uncertainty of position) is roughly equal (or greater) to some constant, we'll call it H.

Due to this, if one uncertainty grows smaller, the other grows larger.

If the electron is located in the nucleus, its position (Δx) would be much more narrow than if it was around the nucleus. Since the uncertainty of Δx goes down, Δp must go up co compensate. Turns out, this Δp is enough to give it an enough momentum to overcome attractive force.

But then comes a smart observer, and says, but what if an electron managed to lodge itself exactly into the center of a proton. Since Coulomb's law says F= q1q2/r^2, and r is 0[2], that's Infinity! You can't escape infinite charge attractiveness!

To that, you can notice that as r and Δx approaches 0, Δp also approaches infinity, so it will have more chance to escape before that happens. But in some rare cases, it will interact and form a neutron, with some energy being emitted as a neutrino.

[1] It's not an axiom, it's an observation derived from experiments. However, why is the matter behaving like that out of physics wheelhouse. It can tell you a lot about laws, but very little WHY are laws like that. So it might as well be an axiom.

[2] This is, of course, assuming that space is infinitely divisible, which is yet to be confirmed or denied.
by mubou | 2025-04-28 09:43:18+00:00
Not sure how useful this is IRL, but it's pretty elegant, for being able to reproduce both JSX and React's hook style in so little code. Rather than a React alternative per se (since this obviously lacks a vDOM), it almost feels like it could fill a similar role that Knockout did back in the day: making it easy to add some interactivity to a page in a more declarative way than plain DOM handling, but without bringing in a full framework.

Here's a codepen if anyone else wants to try it out: https://codepen.io/mubou/pen/pvvWyGO
by ewidar | 2025-04-28 09:44:07+00:00
https://recipit.me

I was tired of all the ads, and the poor formating on recipe websites.

So I made a website to import food recipes from any location (text, YouTube, file...).

It has been fun so far! I tried importing from fb/ig by using a meta app but it has been a horrible experience so I scrapped that ^^
by axelthegerman | 2025-04-28 09:44:39+00:00
This!!

Even modern cars have some trouble knowing the actual speed limit of the road you're currently on.

In Canada I don't think the speed limit is ever higher than 110 or 120km/h - limit to 130km/h and have an override, get full on in trouble (incl loosing all insurance) when disabled.

If track use only maybe even have some kind of device that isn't publicly sold to disable the speed limit there.

Also I doubt any north American car is randomly gonna show up at the German Autobahn - gonna get across the Atlantic first
by disgruntledphd2 | 2025-04-28 09:45:27+00:00
> 40-50% of most countries production goes to government projects, so no we don't ignore everything else than capitalism. We are about 50-60% capitalist at most.

Sorry, I don't get how this relates to what I said. I mentioned that it's surprising that we use one model of the world to organise our society (i.e economics) and you countered that the government is part of the economy (which is trivially true, but doesn't really relate to my point). Can you help me understand what you mean here?
by GuB-42 | 2025-04-28 09:45:28+00:00
It is a bit of a tangent, but I noticed that the picture on the lower right features an OLPC XO laptop. These are very interesting little machines from around 2010 [1], I wonder if some of them are still around today.

[1] https://en.wikipedia.org/wiki/One_Laptop_per_Child
by Amezarak | 2025-04-28 09:45:31+00:00
There's also no evidence for your belief that this represents unbroken oral tradition from eyewitnesses who actually saw the eruption. I also imagine you are cherry-picking what parts of the story you're taking as proof of this: as I said, do you believe that the volcano stopped erupting because two men sacrificed themselves? Why are you erasing the existence of the two giants hurling hot rocks at each other? Why do they say there are "many stories" about how the lake was formed but only tell us this one? What are the others? If they are not about events that can be interpreted as eruptions, what does that mean?

> You believe it based on your own (very mainstream) biases of “primitive” cultures.

Usually I have been accused of precisely the opposite, particularly in this case, where I commonly assert that people hugely underestimate the technological and social capacity of Native Americans, particularly in North America. If anything, I am suggesting you are underestimating the peoples in the area by suggesting they could not have applied their understanding of natural processes to understand a past event they did not personally witness.

> , it’s a fantasy you have wrapped around something you don’t understand or appreciate.

I understand perfectly well. But when people make absurd claims like "our people have been here for 13k years", this is a religious claim, not a historical claim (it would be an absurd one), and you should understand when I take what you say alongside that with a huge grain of salt.
by nickwatson | 2025-04-28 09:46:02+00:00
I'd like to humor you a bit on what you say (going off on a little tangent here).

- Were all the existing sources (e.g. news, podcasts, etc) ever reliable? - Do people lobby for certain outcomes on some research/articles?

And finally...

- Now we know LLMs hallucinate, and news can easily be faked, are people finally starting to question everything, including what they were told before?

Of course, mostly rhetorical but I think about this a lot - if it is a good or bad thing. Now we know we are surrounded by fakeness that can be generated in seconds, maybe people will finally gain critical thinking skills, and the ability to discern truth from falseness better. Time will tell!

For now the way I see it is people are becoming reliant on these tools, and only will a community of people collaborating to better the outcomes can ensure alternate agendas do not lead the results.
by vv_ | 2025-04-28 09:47:20+00:00
> Check your local laws before you start messing with SIM cards, though, altering certain identifiers can be a crime.

Generally the contents of specific important Elementary Files (EF) are protected by requiring you to have an ADM code to read/write.

> I haven't needed to enter APNs in years, there are standards to provision those by SMS if they're missing and most of them are pre-configured in the phone's OS.

You might need to enter an APN if you have a B2B contract with the operator, where they'll route all traffic from your device(s) through a VPN directly to you. Besides that and static addresses, I am not aware of any other prevalent use-case for changing an APN.
by saagarjha | 2025-04-28 09:47:41+00:00
I'm not sharing the message because it brings me joy to have it shown to more people. I think it's a pretty reprehensible thing to say. I'm sure people say worse into their personal diary or even among friends and that is not criminalized. I might possibly even consider the defense of "oh nobody really reads my posts anyway and I deleted it quickly".

But I absolutely will not stand for trying to claim that the post was scare-quotes "hateful". It was hateful, full stop. This is not polite discourse that was unfairly marked as hate because of some political slant. It was clearly hate, even if wasn't seen by anyone, even if it got deleted.
by Doxin | 2025-04-28 09:48:30+00:00
> Faster, smoother, quieter

One of the things you see where I live is they pave roads with lower speed limits with rougher surfaces. You can drive 60km/h on a 30km/h road, but it'll be very uncomfortable.

People will drive as fast as comfortable or as they feel is safe. Making roads less comfortable at high speed is not hard. Making roads feel dangerous at high speeds while still being safe is not hard.

You can't just put up a speed limit sign and expect it to work. You have to adapt the design of the road to the speed limit.
by avian | 2025-04-28 09:48:46+00:00
> If I take a small piece of matter and shake it for a long time, then don't all its electrons and protons emit electromagnetic radiation and lose energy?

Yes, they do. But it's only a very very tiny amount.

You're shaking both the positive (nucleus) and negative (electrons) parts of the atoms. The electromagnetic fields outside of the atom almost perfectly cancel out. This means that the acceleration only affects the very small residual field and there is very little radiation at far distances, unless you shake it really really fast.

Another way to look at it is that atoms are in fact already constantly shaking by themselves because of thermal movement. And this does in fact result in them emitting radiation: objects at room temperature will radiate in the infrared spectrum because of this.

The trick is that thermal movements of atoms are very fast compared to moving something by hand. Room temperature infrared radiation frequencies are on the order of tens of terahertz. Compare this to manually shaking an object at (say) 10 times a second. With some hand waving math this is like giving it an equivalent temperature of around 10^-10 kelvin. It will radiate extremely long wave radio waves, but such a tiny amount that it will be completely unmeasurable.
by oniony | 2025-04-28 09:48:59+00:00
The weirdest decision, for me, was putting the music on the cartridges, so that each cartridge needs an SD card holder and SD card.

I would imagine putting all the music on the device and just giving each cartridge an address would have been considerably cheaper and easier. This could have been electrically, connecting different pins of the existing battery holder solution; mechanically, such that each cartridge has a key shape that depresses different microswitches in the device; magnetically, using magnets on the cartridges; or optically, using different pattern holes on the cartridges and leds with optical sensors on the device.

I think, personally, I would have gone the mechanical route and just have an array of switches in the device. Then the cartridges can be simple plastic keys and the device can draw no power when there's no cartridge.

I think the Fischer Price record player worked this way: https://www.amazon.co.uk/Fisher-Price-Interactive-Packaging-.... The tracks on the record form a binary number and the record player head has mechanical switches.
by cdf | 2025-04-28 09:49:12+00:00
I always believed that the AI/LLM/ML hysteria is misapplied to software engineering... it just happens to be a field adjacent to it, but not one that can very well apply it.

Medicine and Law, OTOH, suffers heavily from a fractal volume of data and a dearth of experts who can deal with the tedium of applying an expert eye to this much data. Imagine we start capturing ultrasound and chest xrays en masse, or giving legal advice for those who needs help. LLMs/ML are more likely to get this right, than writing computer code.
by dusted | 2025-04-28 09:49:24+00:00
Silly lisp-inspired language, but it turned into something different as I started asking myself more and more questions, and now it's more of a model for computation that tries to think about computers as different from looms (aka harward architecture). One where self-modification is the norm, where there is no stack unless you make one, and where there's no difference between a program extending itself or the programmer doing it (unlike LISP macros, my language, and model, does not have a distinction, there's no macros).

I'm not doing this because I'm convinced it's a great idea, or because it's going to revolutionize computing, or because it will be a good language, model or beneficial in any particular way, I'm doing it because I think it's fun, neat and interesting to think about (and talk about).
by bayindirh | 2025-04-28 09:49:56+00:00
Nope, because people are overestimating themselves. I know a couple of people who can do 2x the speed limit relatively safely, but this is because they were race drivers in a previous life. However, not everyone (incl. me) has that reflexes and situational awareness all the time.

Recently I got into an accident. A car changed into my lane completely unannounced, and I was blinded by a car in my front diagonal. The car "jumped" into my vision, I braked and hit them relatively slowly. Being slow, uphill and on a wet road helped all of us (the car took some of the damage by sliding).

Consider this in a freeway at speed limit. We'd be hurt. Consider this at 1.5x speed limit, because everyone speeds, and we would be dead.

Do not forget, the police found out that I had no wrongdoing and blame. It was impossible to see them, and they neglected to check their mirrors and signal a lane change, plus I had some distance to them and braked as hard as I could the moment I saw them, and I was going 50KM/h to begin with.
by t8sr | 2025-04-28 09:49:58+00:00
I don't like mechanistic explanations of particle physics - they're an attempt to relate what's going on to our macroscopic experience, but they usually fall apart when you look too closely.

I find it much easier to understand the stability of hydrogen by thinking about ground states. If the electron in H could merge with the proton, they'd make a neutron. But a free neutron is not stable and decays in a few minutes back into a proton, electron and an antineutrino.

With very large, proton-rich nuclei, eventually you get to the opposite situation where the ground state is one less proton, one less electron and one more neutron and the atom decays into that state by, you guessed it, an electron "falling into" the nucleus.
by richardw | 2025-04-28 09:50:06+00:00
I thought I might get pushback on the example. I honestly just googled and found a random person being Harris, but just add anyone who accepts spacetime/relativity and how it represents not what we experience. Or anyone who accepts that the mind predicts rather than observes reality, because our responses need to be faster than what we can process what we perceive. So even our direct perceptions are not quite exact.

The point, please focus on this point, is that it’s not a done deal that all accept free will. There exists a set of people who are smart and believe the opposite. I’m arguing against “everyone should think what I think”.

Edit: although to be honest if you convinced me otherwise I’d be 100% happy! “Most philosophers” (or my own “lots of smart people”) isn’t an argument I am moved by but I’ll go read up. My personal view is that the disappearance of time at the speed of light is incredibly powerful. I don’t feel we’ve explored the implications of that nearly enough. It either means the future impacts the past or super determinism is correct. Is there an alternative?
by nickwatson | 2025-04-28 09:50:40+00:00
Ha, hoc - it was quite interesting to see, and learn a bit about this.

Apparently the suggested term is "Digital Information Synthesis"

You can see the report here: https://docs.google.com/document/d/1Vg_UWUPelWohzVGduaKY7Czd...

This was quite an interesting use case, thanks!
by latexr | 2025-04-28 09:51:18+00:00
> First, Chrome won the browser war fair and square by building a better surfboard for the internet.

Ah, yes, because as we all know, tech illiterate users (i.e. the majority) care deeply about which web browser they’re running, and after rigorous testing settled on Chrome. It had nothing to do with Google pushing Chrome on users every chance they got, using every trick in the book to get everyone to install their browser and degrading their popular services on alternative browsers. No sire, no foul play and trickery there, Google played fair and square. No one has ever known Google to be more than a fair and honest champion for users. What was their motto again? “Don’t be evil”? Well, I’m sure it doesn’t mean anything that they stopped using that.

To not fall victim to Poe’s law: Yes, that was heavy sarcasm.
by Arkhaine_kupo | 2025-04-28 09:52:37+00:00
> If the message in question had a limited reach, then it should not lead to a conviction.

her husband shares a prominent political position. Her reach and views way larger than her twitter following. By association alone she has authoritative voice.

If Melania Trump was tweeting about racist things, how quickly she deletes the tweet would not be the main issue to give a prominent example
by chrisvalleybay | 2025-04-28 09:52:40+00:00
I'm creating a keyboard driven list application like Trello. It's going to be the «Obsidian of lists».

Everything will be bound to a key in the spirit of VIm :-)

I don't have a landing page yet, but if this sounds interesting to you, you can sign up here: https://lindon.app

I'd also love to hear what would be important to you in an application like that.
by willemh | 2025-04-28 09:53:53+00:00
I’m building a small integration to take scheduled transactions in YNAB and display them in any normal calendar application. I’m hoping to add historical transactions one day as well to help with reconciling.

https://calendarforynab.com

Any feedback is welcome!

I once saw an idea on here[1] about putting a lot more historical information into a calendar, including past activities. It resonated with me and I wondered if bank transactions could be part of this activity layer. At the time I was working on a real-time integration between my bank and YNAB so I was already thinking about the space.

1: https://julian.digital/2023/07/06/multi-layered-calendars/
by znpy | 2025-04-28 09:54:34+00:00
> Gym is something men do to compete with other men and look good to other men. It has zero to do with what women like.

This is nonsense. Most men do gym because they want to look a certain way (leaner and in some cases more muscular). It's largely unrelated to what women want.

> But when I wrote that in comments, invariably, men felt offended and angry.

Rightfully so. It's a gross generalization (and oversimplification).
by jhanschoo | 2025-04-28 09:54:37+00:00
"There are people who have done great evil, who perhaps want to be forgotten if they were dead. But it would not be morally right to forget their deeds and the lessons we can draw from them. Because of that, the right to be forgotten upon death is a conditional one."

The above is the moral reasoning expressed in the comment you are responding to, and of course whether or not one agrees with this line of reasoning can vary from person to person and belief to belief.
by microtonal | 2025-04-28 09:55:04+00:00
Am I a lone crazy person? Perhaps, perhaps not.

Well, at least maybe your moral compass needs some calibration? I typically go out of my way to avoid personal attacks here. But it's hard to do so if the reaction to "people get detained and locked up for more than a month with bad medical care" is: "oh great, no more far left".

We not should celebrate a slide into authoritarianism, which always starts with bullying weakly-positioned groups first, but the government has already floated with the idea of deporting Americans (and apparently already deported American kids [1]).

[1] https://edition.cnn.com/2025/04/27/us/children-us-citizens-d...
by Jolter | 2025-04-28 09:55:07+00:00
Do you actually prefer if people with a different political view than yourself are just… removed?

I don’t even know where to start with that. Consider whether you have a broken moral compass or something. Consider moving to an actual dictatorship country instead of supporting the introduction of dictatorship in a new country?

Edit: beaten to the “moral compass” thing. Well said, above.
by Arkhaine_kupo | 2025-04-28 09:56:49+00:00
No, you see I can be hateful and not suffer consequences or else 1984. Also I should be allowed to vote and promote ideas that will actively harm people, gleefully admit it, and celebrating their suffering but it is not ok to stop me. As the famous poem goes first they came for the neo nazis and i did nothing, then they came from the online racists and i did nothing and now they are coming for me the lowly bigot and there is no one left to defend me.

Or something like that, I barely read anything that isnt a tweet length and preferably full of slurs.

(Trying to write a modern "modest proposal" is hard when reality is so blatantly stupid)
by ActorNightly | 2025-04-28 09:56:58+00:00
>But a valuable business co-founder brings extensive domain expertise, a network of people, sales skills, management skills, and fund-raising talent.

Yep.

I tried doing startups with a few ideas. I can easily code all day. But then, when it comes to doing all the secondary stuff, like filing paperwork for an LLC, marketing, networking, and so on, that stuff was "painful" to me, as it took some of the fun out of the whole making things work.

You could have a good idea, but without a strategy to let people know about it, even if you build it, it may never get used.
by kukkeliskuu | 2025-04-28 09:57:29+00:00
(1) Business process modeling tool where processes are data and not graphs. I am doing it according to the USM method. USM is kind of "open source" service management method, although it works on different level than other frameworks and standards, and is compatible with all of them.

This makes it possible to create a kind of requirement "programming language" where the requirements can be evaluated. With this language it becomes possible to create cross-references from various compliance standards/frameworks, like ISO27K, to USM, and automatically evaluate the compliance.

(2) Dance event calendar in Finland, running in production for over a year. 1-2M page views/month. Django app, but I am now implementing a copy of the unauthenticated user views to S3 bucket and delivering it through Cloudflare.

(3) Django app to handle all the data related to custody trial. Emails, SMS, notes, official records, voice memos, etc. can be attached to a timeline, and tagge and searchable. It has command line interface for adding data, in addition to UI, so I can quickly add notes and attach files.
by KolyaKornelius | 2025-04-28 09:57:39+00:00
Informants fathering children with their sources was also a thing in the DDR. Often the lines were blurred because informants were former activists that were turned by threats and blackmail. But I personally know a woman who had 2 children with a guy who turned out to be an informant that had been specifically set upon her and her group of friends. She found out only after 1989 when the files were opened.
by alok-g | 2025-04-28 09:57:49+00:00
I have heard this too and still feel that there's more to this that is critically missed.

>> For that, I'd need you to accept as an axiom (unprovable truth) that the following principle is true: ΔpΔx is roughly equal (or greater) to some constant, we'll call it H.

As far as I know, Heisenberg's principle isn't exactly an axiom. It can largely be derived!

A waveform in time and its Fourier transform have such a relationship, which is entirely mathematical. More confined a time waveform is, more spread out the frequency spectrum is, and vice versa.

Now de Broglie principle linked momentum of a particle to its frequency! That makes the trick. So far, in Newtonian mechanics, momentum just related to position via derivative of position, i.e., velocity. Both were time waveforms.

But with de Broglie principal, momentum (also?) links to frequency domain, while the position remains in time domain. Now the Schrodinger's equation yields the said relation between position and momentum.

What I'll write next fits better in another comment box, so will do that.

(Edit:) Wrote here: https://news.ycombinator.com/item?id=43819506