MurphyA/hacker-news huggingface dataset:
by alhirzel | 2026-01-29 11:14:47+00:00
The physics of magnetic torquing maybe could probably work in most if not all locations on Earth for a sufficiently small and power dense vertical top that spins sufficiently slow. Want the smallest possible local dot product of gravity vector and magnetic field for an ordinary top (without considering "sideways" tops), which may lead to better performance in some locations on Earth (could map this with e.g. IGRF). 3D field actuation would be beneficial to allow higher efficiency and longer periods of actuation around the window where the Earth's magnetic field is maximized in the spun plane, while minimizing imbalance: this actuation timing is probably the only strategy that would make practical sense for most of the magnetic power, because you will need to take a break once in a while for sensing. Another practically difficult part would be avoiding on-board soft iron noise in magnetic field, because higher spin speed would require the device and environment to damp out the device-induced magnetic field at a higher minimum rate to afford any budget for accurate sensing of the background field during the "off"-time. That is: sensing trades with spin speed because it takes non-zero time and requires a stable environment.

To implement this, I think you'd first want to test in a controlled environment with a larger magnetic field and then gradually turn down the applied field until it is Earth-like. I am honestly unsure whether you could practically get there, so earlier I used the words "maybe could", but humans are crazy so I appended the "probably".

This would be a fun YouTube video to watch.
by n3storm | 2026-01-29 11:14:50+00:00
RSS readers look like email clientes because due to some osmosis with Usenet readers:
https://web.media.mit.edu/~kkarahal/generals/VSpaces/usenet....

and such metaphor exchange predates 2002 NetNewsWire by far.

Many other misconcepts start from here on in the article. Like popularity of RSS due to this software and not due to people acquiring more Internet culture.

Even wikipedia article is off:
"According to FeedBurner, NetNewsWire was the most popular desktop newsreader on all platforms in 2005."

NetNewsWire supported platforms in 2005: Macos PPC.

Am I getting all this wrong?
by Acinyx | 2026-01-29 11:14:57+00:00
You see electric Volvo's everywhere in the more electrified markets in Europe like Norway and the Netherlands. Especially the smaller models like the ex30 and ex/xc40.
They fit very well design-wise and I think software quality wise in the European market and they are essentially Chinese (Zeekr).
I think it helps that they use Android Auto as the main interface and some of their designers are still located in Sweden.
Korean electrics are also taking over marketshare hand over fist.
by embedding-shape | 2026-01-29 11:15:02+00:00
> What was the original core principle of ollama?

One decision that was/is very integral to their architecture is trying to copy how Docker handled registries and storage of blobs. Docker images have layers, so the registry could store one layer that is reused across multiple images, as one example.

Ollama did this too, but I'm unsure of why. I know the author used to work at Docker, but almost no data from weights can be shared in that way, so instead of just storing "$model-name.safetensor/.gguf" on disk, Ollama splits it up into blobs, has it's own index, and so on. For seemingly no gain except making it impossible to share weights between multiple applications.

I guess business-wise, it was easier for them to now make people use their "cloud models" so they earn money, because it's just another registry the local client connects to. But also means Ollama isn't just about running local models anymore, because that doesn't make them money, so all their focus now is on their cloud instead.

At least as a LM Studio, llama.cpp and vLLM user, I can have one directory with weights shared between all of them (granted the format of the weight works in all of them), and if I want to use Ollama, it of course can't use that same directory and will by default store things it's own way.
by tim333 | 2026-01-29 11:15:05+00:00
Not quite sure where I read that but from "What’s on Vladimir Putin’s reading list?" in the FT:

>Putin, though, likes to present himself as someone who has thought extensively about the past. It was not just Trump who has been treated to the Russian leader’s analysis of the history of Rus’, the Christianisation of Prince (later St) Vladimir in 988 or the impact of the Grand Duchy of Lithuania on lands to its east in the late Middle Ages.

I'm not much of a Putinist but in the couple of minutes of Putin Tucker I watched he was going on about that stuff and how Hitler wouldn't have had to do so much war if the Poles had just been reasonable about him taking over. I'm sure he's familiar with Dugin but probably regards him as a bit of a crank.
by brushfoot | 2026-01-29 11:15:20+00:00
> I was a vegan for 10 years, and found out I had basically zero Omega 3 in my blood

I see your disclaimer, but just for more context, vegans can get Omega 3 without taking pills per se. Flax seeds are an excellent source. I often add a spoonful to a bowl of oatmeal or as a pancake topping along with fruit sauce and granola.
by rustyhancock | 2026-01-29 11:15:22+00:00
These are always tricky, vitamin D deficiency and low fat diets clearly cause depressive symptoms.

Does that mean vitamin D treats depression in general?

When most people talk of depression they aren't even using talking about major depression.

We live in a world that in many ways is comfortable but crushing. Is that depression? Or just harmful levels of understandable unhappiness? Are they different?
by Topfi | 2026-01-29 11:15:37+00:00
I'm still testing myself and cannot make a confident statement yet, but Artifical Analysis is a solid and independent, though also to be fair somewhat imperfect source for a general overview: https://artificialanalysis.ai/

Purely according to Artificial Analysis, Kimi K2.5 is rather competitive in regard to pure output quality, agentic evals are also close to or beating US made frontier models and, lest we forget, the model is far more affordable than said competitors, to a point where it is frankly silly that we are actually comparing them.

For what it's worth, of the models I have been able to test as of yet, when focusing purely on raw performance (meaning solely task adherence, output quality and agentic capabilities; so discounting price, speed, hosting flexibility), I have personally found the prior Kimi K2 Thinking model to be overall more usable and reliable than Gemini 3 Pro and Flash. Purely on output quality in very specific coding tasks, Opus 4.5 was in my testing leaps and bounds superior of both the Gemini models and K2 Thinking however, though task adherence was surprisingly less reliable than Haiku 4.5 or K2 Thinking.

Being many times more expensive and in some cases less reliably adhering to tasks, I really cannot say that Opus 4.5 is superior or Kimi K2 Thinking is inferior here. The latter is certainly better in my specific usage than any Gemini model and again, I haven't yet gone through this with K2.5. I try not to just presume from the outset that K2.5 is better than K2 Thinking, though even if K2.5 remains at the same level of quality and reliability, just with multi modal input, that'd make the model very competitive.
by smallvariance | 2026-01-29 11:15:55+00:00
This article feels off to me. It's such a human topic, but written in an entirely AI voice. I've been noticing this more frequently lately, and it makes things I read feel inauthentic.

It feels like some of our human-ness is being taken away. Writing is such a beautiful technology that carries ideas from one persons head into another. But now we put AI in the middle and I worry how much of the message is being corrupted.
by sham1 | 2026-01-29 11:16:37+00:00
If it's not pushed down users' collective throats, the owning class that has invested so much on this fad would not get to rake in as much money and that would make their investment actually risky, can't have that. I hate to sound cynical about this, but that's what it looks like. If they had these things be opt-in add-ons, no one (or at least a sufficient amount of people) would not use these, because people are sick of LLMs being pushed everywhere.
by thadusTeam | 2026-01-29 11:16:40+00:00
Hey all alot of people have asked us why we made our own language.

1. The gap from drag and drop block coding to real text based programming vast. In alot of schools - student typically do this transition from the early years of high schools. After speaking to educators, students (not to mention reflecting on our own experiences) it was clear that something needed to be done to bridge this learning.

2. Essentially we took languages commonly taught in schools - Python and Java and stripped them off their nasty, complex syntaxes to create a simple plain English language: Thadus. Although Python is one of the more simpler language its still difficult to code for young people who've been drag and dropping code.

3. Thadus paired with our accredited coding courses (3 month program) is that stepping stone.
by cong-or | 2026-01-29 11:16:44+00:00
The toxicology is pretty damning: codeine without morphine in stomach contents means someone crushed up Tylenol-3 and gave it to a 12-day-old baby. That's not a metabolic quirk—it's
homicide.
Koren's "ultra-rapid metabolizer" theory provided cover, and his research went on to clear 17 other caregivers in similar deaths. How many of those were actually murdered infants?
by cucumber3732842 | 2026-01-29 11:17:04+00:00
The Cybertruck was very clearly designed to be a low production model to figure out teething issues in manufacturing and design. Think Plymouth Prowler. Like seriously, nobody makes a body out of heavy gauge sheet metal with simple shapes if they're planning on volume, it doesn't pencil out vs more die complexity and thinner material. But the future growth to justify that never seems to have materialized....
Show HN: PolicyLayer – Non-custodial spending limits for AI agents
by liad | 2026-01-29 11:17:19+00:00
PolicyLayer enforces spending limits on AI agent wallets without custodying private keys.

The problem: AI agents are moving into production with irreversible financial capabilities, but every agent is one bug or prompt injection away from draining a wallet. Traditional options are bad—shared seed phrases (compliance nightmare), custodial wallets (counterparty risk), manual approval (defeats automation), prompt-level limits (easily jailbroken).

How it works:
- Drop-in wrapper for existing wallet SDKs (Ethers, Viem, Coinbase CDP, Privy, Solana)
- Two-gate enforcement: Gate 1 validates against policies, Gate 2 detects tampering via SHA-256 fingerprinting
- Keys never leave your infrastructure—we only see transaction metadata
- Fail-closed: if anything fails, transactions stop (not continue)
- Policies configured in dashboard: daily caps, per-tx limits, recipient whitelists

Also supports X402 (HTTP 402 payment protocol) for agents paying for APIs—per-endpoint limits, auto-discovery of new paid endpoints, duplicate payment prevention, and circuit breakers.

SDK is open source.

Feedback welcome — what would make this more useful for your agents?
by embedding-shape | 2026-01-29 11:17:31+00:00
> llama.cpp is the actual engine running the llms, ollama is a wrapper around it.

How far did they get with their own inference engine? I seem to recall for the launch of Gemma (or some other model), they also launched their own Golang backend (I think), but never heard anything more about it. I'm guessing they'll always use llama.cpp for anything before that, but did they continue iterating on their own backend and how is it today?
by nxobject | 2026-01-29 11:18:04+00:00
Be careful - many studies in the Vitamin D meta-analysis *enrolled patients already taking antidepressants.* [1] Reporting effect sizes without specifying "on which population?" is misleading.

(As an aside, Cohen would be the person not to tell you to assign qualitative values to effect sizes. They are as arbitrary as any other threshold used by working statisticians.)

[1] https://www.cambridge.org/core/journals/psychological-medici...

EDIT – that is, please don't draw the conclusion that you can substitute supplements for antidepressants. The meta-analyses don't seem designed to examine that hypothesis, and I doubt anyone would ever participate in a such a trial. In general (and as a working biostatistician), I would be very, very, very cautious applying estimates of average effect to myself, you, or any other individual person in a field as murky as psychiatry. That's why even the stingiest American health insurance plans still have an incredibly large range of antidepressants in their formularies.
by cube2222 | 2026-01-29 11:18:11+00:00
I'm not an expert, but I've done a bunch of reading on this previously, and also skimmed the article which also mentions some parts of this.

First, when taking omega 3 supplements, you generally care about increasing the ratio of omega 3 to omega 6. Hemp hearts have much more omega 6 than omega 3, so they're not very effective for improving the ratio.

Second, hemp hearts contain ALA, while what you generally want to improve is EPA and DHA (this is also covered in TFA). The body can convert ALA to EPA and DHA, but it's not efficient.

So all in all, if Omega 3 for the article's stated benefits is what you want, this is not the way. I recommend looking into eating more fish, or if you want a vegan route, algae-based supplements. [0] is a decent source from the NIH about foods and their Omega 3 content, split by ALA/EPA/DHA.

[0]: https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthPro...
by Xunjin | 2026-01-29 11:18:13+00:00
It's unbelievable crazy what the author suggests, even say "10,000 IU if you're feeling daring / have darker skin / live in less sunny climates.".

Just a simple look at the side effects of high dosages:

Safety and side effects

Taken in typical doses, vitamin D is thought to be mainly safe.

But taking too much vitamin D in the form of supplements can be harmful and even deadly. Taking more than 4,000 IU a day of vitamin D might cause:

Upset stomach and vomiting.
Weight loss and not wanting to eat.
Muscle weakness.
Not being able to think clearly or quickly.
Heart rhythm issues.
Kidney stones and kidney damage.

https://www.mayoclinic.org/drugs-supplements-vitamin-d/art-2...
by ndr42 | 2026-01-29 11:18:38+00:00
I was thinking about something comparable, where there is a digital storefront, payment processing, security, delivering, installing on all my devices and so on...

Steam comes to mind. They take 30% (and I think 5% for credit card or whatever).

So I do not think that "outrageously wrong" is characterizing my remarks adequately.
by embedding-shape | 2026-01-29 11:19:14+00:00
Ollama made the wonderful choice of trying to replicate Docker registries/layers for the model weights, so of course the models you download with Ollama cannot be easily reused with other tooling.

Compared to models downloaded with LM Studio, which are just the directories + the weights as made, you just point llama.cpp/$tool-of-choice and it works.
by cardanome | 2026-01-29 11:19:23+00:00
With depression it is important to find the cause of it.

You might be depressed because you life objectively sucks. Then you symptoms are good and healthy and a signal to make changes in your circumstances.

You might actually have a good life but still feel depressed because there is a chemical imbalance in your brain. (Very simplified). That is when drugs come in.

It might be just a seasonal thing and you need to go outside more and take some supplements.

You might have some other undiagnosed issue. You might have ADHD, autism and other things that cause you to struggle and develop depression as a side effect.

So find out what works and what doesn't work for you.
by imtringued | 2026-01-29 11:19:33+00:00
How can you guarantee that the OS doesn't preempt your thread in the middle of the spinlock? Suddenly your 100 cycle spinlock turns into millions or billions of wasted cycles, because the other threads that are trying to acquire the same lock are spinning and didn't bother informing the OS scheduler that they need the thread that is holding the spinlock, which also didn't inform the OS, to finish its business ASAP.
by isoprophlex | 2026-01-29 11:19:34+00:00
Because it's common to hate on antidepressants, I've always personally had a bias against them.

For the past 15-20 years, november thru february are basically a writeoff due for me due to seasonal affective disorder. Cold showers, exercise, no alcohol, strict sleeping rituals. Vitamin d. I can still sleep 11 hours and feel like reheated cat shit.

Enter citalopram. "It will take up to six weeks to dial in" they said. Within four days I felt like the inside of my head was designed by Apple in their glory days. My mind became an orderly, well lit, tastefully designed space... instead of a dimly lit crack den. I'm more emotionally available, no longer tired, less cranky. I felt cozy. I could cry with joy because I could finally understand emotionally why people like the Christmas season.

I won the SSRI lottery I guess, the side effect are sweaty feet, vivid dreams and a dry mouth. That's all.

This just goes to show that for me, they're extremely effective.
by weird-eye-issue | 2026-01-29 11:21:30+00:00
Just Google it. There's tons of research on this so I don't know why I need to provide a specific link when this is common knowledge.

But also here is something to think about: your body will produce more D3 than that by being in the sun for just several minutes. So if you consider such a low dose of D3 an overdose then you better steer clear of the sun!
by lambdaone | 2026-01-29 11:22:27+00:00
I think you'd be suprised how effective robots will be at manual tasks eventually. Manipulating physical objects in space is a different problem from manipulating text strings, but efforts to solve this problem are already well under way.

Boston Dynamics has shown us that the difference between a clumsy robot and an agile one is mostly software, and the differences between current Unitree-class robot and an actual practical worker robot is also likely to be mostly software (and of course access to lots of compute power - most of the 'brain' is unlikely to be situated within the robot body itself, instead residing in a data centre some milliseconds away).
by xerox13ster | 2026-01-29 11:23:32+00:00
I already stated that I understand the thread that we are in. I’m beginning to think that you don’t and didn’t read where I said that (as an attempt to head off this very reply), or the ggp comment itself, or the OP comment ggp replied to.

The whole thread is about space. The comment they replied to both shared a YouTube video and discussed ablations, so they brought a contribution to the thread: Here’s this interesting video from a space YouTuber in case anybody is curious about ablative materials in rocketry.

What did you bring to the conversation by remarking that the video that they shared was not about wood in satellites? They’d already said so; it was a Captain Obvious level response.

I have at least brought curiosity as to why you felt that was a meaningful contribution and how you could have arrived at such a dismissive statement from a place of curiosity.

I take it that despite being in a thread about wood being used as an ablative material for satellites, you have no curiosity about ablative materials in the devices that transport said satellites?

Did you think that they misunderstood what thread they were in? Their comment was relevant and welcome. Frankly, yours was against HN guidelines, and I was trying to politely draw attention to that fact by getting you to analyze your conclusion.
by code_biologist | 2026-01-29 11:24:41+00:00
Never going to advocate against eating whole foods if they taste good! But beware, the ALA omega 3 fat in flax and plant sources is not the DHA and EPA omega 3 fats used by animal cells, and so it's not as potent as what's in fish.

The main problem with ALA is that to have the good effects attributed to omega-3s, it must be converted by a limited supply of enzymes into EPA and DHA. As a result, only a small fraction of it has omega-3's effects — 10%–15%, maybe less. The remaining 85%–90% gets burned up as energy or metabolized in other ways. So in terms of omega-3 "power," a tablespoon of flaxseed oil is worth about 700 milligrams (mg) of EPA and DHA. That's still more than the 300 mg of EPA and DHA in many 1-gram fish oil capsules, but far less than what the 7 grams listed on the label might imply.

https://www.health.harvard.edu/heart-health/why-not-flaxseed...

Also, beware of omega 6 fats. Seed oils (corn, soy, canola) used in commercial food products are incredibly omega 6 dominant in terms of polyunsaturated fat content. Consequently, the ratio of omega 3 to omega 6 fats we consume has plummeted as food production has industrialized. Omega 3 fats are precursors to generally anti-inflammatory signaling compounds, whereas omega 6 fats are precursors to pro-inflammatory signaling compounds. The bias in fat intake leads to more pro-inflammatory signaling in the body, and a lot of alt health types have alleged this is a major causative factor in the obesity epidemic.

This is important for depression, because chronic brain inflammation as a cause of depression was one of the going hypotheses at least a decade ago when I last looked into all of this. Upping omega 3 intake is an intervention that can address chronic inflammation, which is potentially why it improves some cases of depression.

Pretty much nobody in the west needs more omega 6s these days. I hear even farmed salmon eat primarily corn and soy based feeds these days, meaning their fat ratio is skewed much more heavily toward omega 6 than wild salmon and fish.
by aebtebeten | 2026-01-29 11:24:45+00:00
very interesting, especially given the context of https://en.wikipedia.org/wiki/Reverse_Course !

defo EAB! I had been searching for parallel construction of "one doesn't even have to believe in capitalism to benefit from being upper class" as an example of how ideology is strongest in the middle of the class system, but he's put it nicely: "we took it for granted that we could continue to draw our dividends or tumble into soft jobs, but also it seemed natural to us to be ‘agin the Government’."