MurphyA/hacker-news huggingface dataset:
Show HN: Reddit but for finding where your interests overlap
by subdomain | 2026-02-22 20:43:40+00:00
Hi HN,

I'm Micah Blachman, the creator of Crosspassion.

Crosspassion aims to be Reddit, but for finding where your interests overlap. If I was interested in, say, mechanical keyboards and type design, I could check the mechanical keyboard/type design community, and look at the latest discoveries of projects that combine both interests. Plus, you get to connect with people who share your exact crosspassion, or interest combination.

I'm not a developer, so I used Lovable for the code. I'm the first to say AI-generated websites and web apps are not a match for the quality of human-created projects, but Crosspassion is still very early-stage.

I'd love feedback on how to improve Crosspassion, and if you're a developer and you have any ideas about how to take the project to the next level, feel free to reach out!

I wrote about the idea behind Crosspassion on my newsletter: https://micahblachman.beehiiv.com/p/crosspassion/, and you can contact me at micah.blachman@gmail.com.

-Micah
by jmyeet | 2026-02-22 20:43:43+00:00
What we're witnessing isn't just an issue of localizing policy failure or even state policy failure but systemic failure. And we just need to look at China for how to do this correctly.

China treats housing primarily as providing a place for people to live, not a speculative asset. In the West, housing is largely a speculative asset where everyone from investor companies to individual homeowners become incentivized to make housing scarcer and more expensive at every level. China, on the other hand, makes it more expensive and more difficult to own second and third homes.

Now you might be tempted to object and point to things like the Evergrande bubble. And that's actually evidence of success not failure. Xi Jinping quietly changed China's policy, starting around 2014 to focus on living not investment, and Evergrande was essentially allowed to default because housing access is a priority over investors.

You really see this plays out with trains.

Chengdu has the 5th largest (by rail length) metro system in the world. It didn't exist before 2010. China standardized rolling stock so there's no time-consuming and expensive procurement process and there are economies of scale.

China has spent less than $1 trillion building ~50,000km of high speed rail. They initially bought high speed trains from Germany and Japan (IIRC) but now they make their own. To compare, the California HSR, if it ever happens, is estimated to cost in excess of $130B.

The point I'm getting to is that in the West every aspect and level of this is treated as a profit opportunity, which ultimately is a wealth transfer from the government to some company. Procurement, maintenance, track building, land acquisition, track maintenance, station building and so on. These are all state enterprises.

Back to housing, IMHO nothing will solve this problem so long as housing remains a speculative asset. There'll simply bee too much resistance to change.
by verdverm | 2026-02-22 20:44:11+00:00
> they are facing a similar lock-in.

Which is where people take issue with the author, it's wrong, the PLC does not create lock-in, it is more akin to a single point of failure in ATProto, all apps are tied to this, not just Bluesky. I have other comments under this story that go into more details.
by Stratoscope | 2026-02-22 20:44:24+00:00
From the README:

> Tempest AI is a reinforcement learning system that learns to play Atari's Tempest (1981) by watching the game run inside the MAME arcade emulator. A Lua script reads the game's memory every frame, a Python application trains a neural network on the GPU, and the network's decisions are fed back to the game controls — all in real time, at thousands of frames per second.

> This README explains the architecture for programmers who may not be deep-learning specialists. No prior RL knowledge is assumed.
by maverickf2000 | 2026-02-22 20:44:41+00:00
So excited to finally share this with the world.

I’m Maverick Fraser, founder of Maverick Intelligence. We built Maverick Intelligence because most high-intent buyers visit your website, check pricing, come back a few times… and leave without ever filling out a form. Traditional analytics show traffic. They don’t show people.

Maverick Intelligence identifies which individuals are on your site in real time and surfaces their LinkedIn, work email, and buying intent so sales teams can act while interest is live. Early teams are already using Maverick Intelligence to turn previously anonymous traffic into meetings and closed deals.

If you’re building in B2B SaaS and care about pipeline efficiency, website visitor identification, and first-party data infrastructure, I’d love to hear your feedback.
by 9dev | 2026-02-22 20:44:44+00:00
Eh, depends. If you have a dog, and live in a place with actual seasons, February requires frequently checking the current conditions before you head out—at least where we live, it could be anywhere from -10°C to +12°C right now, raining, snowing—annoying to put on a light jacket because you let the sun fool you, and discover it's freezing and starting to rain once you're on the field.

That said: I seem to get by pretty well with a lowly smartphone so far.
by CrazyStat | 2026-02-22 20:45:11+00:00
Is there? I followed the link[1] to the original author of the desktop software this web app is derived from, and he says:

> To make a long story short, by the third generation of ReferenceFinder (written in 2003), I had incorporated all 7 of the Huzita-Justin Axioms of folding into the program, allowing it to potentially explore all possible folding sequences consisting of sequential alignments that each form a single crease in a square of paper. Of course, the family tree of such sequences grows explosively (or to be precise, exponentially); but the concomitant growth in the availability of computing horsepower has made it possible to explore a reasonable subset of that exponential family tree, and in effect, by pure brute force, find a close approximation to any arbitrary point or line within a unit square using a very small number of folds.

(emphasis added)

[1] https://langorigami.com/article/referencefinder/
by connorshinn | 2026-02-22 20:45:46+00:00
This is really cool, thanks for sharing the journey so far.

One potential idea - it might be worth looking at overseas manufacturers to see if they can offer a similar display at a better price point. I did a bit of digging on Alibaba, for example, and found a 25" E-ink display with the same resolution as the Boox for around $1000 (and the price goes down to $500 if you order 100 units or more): https://www.alibaba.com/product-detail/25-3-inch-e-paper-dis...

Seems like they offer a color E-ink display option as well, which could be worth exploring.

Note: I don't have any affiliation with the above company, it was literally just the first one I found when searching. I'm sure there are many other options available as well.
by hinkley | 2026-02-22 20:45:56+00:00
Information radiators are basically 80% of the reason I try to keep tabs on wireless power delivery. Then a Kia and Hyundai vendor thought they were going to get their wireless charging added to the EV6 and Ioniq vehicles and that’s the other 20%. Essentially they removed the transformer from the PSU and moved it to the air gap between the charging coil and the vehicle to halve the parasitic losses. You’d have a car you didn’t even need to plug in.

I’ve been following Information Radiators since practically the beginning, and wiring has always been one of its problems. First networking and now power. In homes, but also in office spaces. The best locations for radiators are often the worst for wiring.

And rink displays move the needle because you have a device that can go completely to sleep between updates, which means it can trickle charge.
by cadamsdotcom | 2026-02-22 20:46:30+00:00
Parsing over validation, and newtypes for everything, fall over when you don’t know the full range of possibilities that can occur in the wild.

It is a handy way to prevent divide by zero as in the article, or to have fun with lambda calculus by asking the type system if 3 + 4 == 8. You can reason about the full range of inputs. Same for file format parsing - making as many failure modes as possible fail as early as possible!

But be VERY wary of using them to represent business logic or state machines that allow only the transitions you believe can exist at this point in time. You just don’t know what wild things people will want to do in business logic, and if your software can’t handle those scenarios, people will just work around it and your stuff no longer matches reality.
by krapp | 2026-02-22 20:46:36+00:00
>So they can intentionally bankrupt the country without consequence?

Yes. Presidents can commit sedition and attempt to overturn elections without consequence. They can interfere with the prosecution of international pedophile rings without consequence. They can commit tax fraud by the billions without consequence. They can commit war crimes without consequence. Of course they can bankrupt the country without consequence. Americans don't hold their Presidents to account, and the Supreme Court made it illegal to prosecute a President for anything they do in office. Nixon was right when he said nothing a President does is illegal, and Trump was right when he said he could shoot someone in broad daylight and get away with it.

Just as the founding fathers intended.
by ffsm8 | 2026-02-22 20:46:52+00:00
Fwiw, reviews are usually boring because most code you review solves boring problems.

Otherwise wouldn't you first figure out how you'd solve the issue, then contrast it to what the PR creator actually did - and then judge which approach is better, long term?

At least that's how I do it whenever there is an actual fun problem, but they're admittedly rare... It's mostly just boring adjustments and these are as interesting to explore as ... Lacing my shoes.
by lukebuehler | 2026-02-22 20:47:24+00:00
Wall-mounted dashboards are a huge life-hack, especially if you have a family. We got a 37-inch touchscreen one, running DAKBoard.

We have several kids and have been organizing our daily todos and calendars on it for several years. We used to drop the ball quite a bit due to a hectic schedule and the dashboard has helped us tremendously. Since it is mounted in the kitchen, being able to pull up recipes is a plus.
by fsckboy | 2026-02-22 20:48:37+00:00
everything you're pointing out is better explained by "Europe didn't want to spend the money, they'd rather let America spend". This was true right after WWII because Europe needed to dedicate money to rebuild their economies. It remained true as later Europe continued to rely on tariff regimes to protect inefficient home industry sectors, and financed increasingly expensive welfare state programs to appease voters.

The US was only in favor of Europe rebuilding after the war, and rightfully against the rest of it.

the US has never been anything but helpful to Europe, but Europeans need a boogeyman to draw attention away from their own failings. It is very important to the European psyche that they be seen as near perfect on every measure. Americans are much more comfortable with, and benefit from, self criticism.
by mapontosevenths | 2026-02-22 20:48:56+00:00
It was the primary driver until life happened. Then life was, and now they exist in a delicate balance.

I get the idea that the throwaway account was suggesting we can just "do whatever forever" without consequences though, and that's just not true. Most CO2 sequestration on earth is now biological in origin and has been for a very long time.
by kisper | 2026-02-22 20:49:33+00:00
I think the rest of the opening of the LLM generated response is useful for discussion here:

“”” I love the creativity already — but let’s walk through it seriously for a minute.

Short Answer

A used dental floss marketplace is almost certainly not viable in the real world — for legal, health, and consumer-behavior reasons.

But the idea behind it might actually be valuable.”””

And it then goes on, in its formulaic manner; this is the key: almost everything in its responses is going to seem formulaic, unless led differently so by the input you provide.
The default LLM instructions are to be helpful, polite, etc. It’s been “trained”, in some handwavey sense, that a polite response to an idea tries to say something nice, a before laying out a critique, good or bad.
by throawayonthe | 2026-02-22 20:49:49+00:00
i find this sorta thing very interesting because not only have i never experienced the 'early' social networks as described (too young), i've never even considered using one of these sites as described - why would i voluntarily forgo pseudonymity on the public internet? I don't think this was fully a generational thing, i remember being genuinely baffled when i discovered my peers/classmates were using their real names, posting pictures/videos of themselves, and interacting with each other on these public platforms; wasn't internet safety 101 "Don't Do That?"
by layla5alive | 2026-02-22 20:49:57+00:00
Sounds like most of that blog was written by AI. I'm getting tired of reading it. I had patience for reading the peculiarities of human expression. But that just went on and on and was quite redundant and I'm left feeling my time and attention were wasted by someone who couldn't even be bothered to write all the words I took time to read.
by IshKebab | 2026-02-22 20:50:14+00:00
This is cool. I bought an Inkplate for this and got as far as writing a custom image format suitable for e-ink sort of things (4-bit RLE; trivial to decode, but good compression for diagram/text type images).

Where I got stuck is calendars... Unfortunately Google Calendar doesn't seem to provide a nice API where you can just say "give me the events for these days", instead you can only download all of your events in iCal format. It's then extremely non-trivial to convert that information into "what is happening today".
Show HN: CIA World Factbook Archive (1990–2025), searchable and exportable
by MilkMp | 2026-02-22 20:50:23+00:00
I built a structured archive of CIA World Factbook data spanning 1990–2025.
It currently includes:
36 editions
281 entities
~1.06M parsed fields
full-text + boolean search
country/year comparisons
map/trend/ranking analysis views
CSV/XLSX/PDF export
The goal is to preserve long-horizon public-domain government data and make cross-year analysis practical.
Live: https://cia-factbook-archive.fly.dev
About/method details: https://cia-factbook-archive.fly.dev/about
Data source is the CIA World Factbook (public domain).
Not affiliated with the CIA or U.S. Government.
by sowbug | 2026-02-22 20:50:44+00:00
Sounds like a sad story, but hard to know what went wrong. Did a safe design collide with regulations that weren't written with modular housing in mind? Did the modularity cause normal approval processes to happen out of order, allowing construction to mistakenly start before fire approval? Or was this simply the often Kafkaesque permitting process actually correctly identifying serious issues?
by crote | 2026-02-22 20:51:00+00:00
Reality already caught up with synthetic fuel for buses.

Shenzhen electrified its entire 16,000-vehicle bus fleet in 2017 - that's almost a decade ago. Since then virtually all of China has transitioned to electric, and other countries aren't far behind. Electric buses have completely taken over the market.

And it isn't just rich Western countries playing around either. We're seeing countries like Slovenia and Romania at >90% electric, and even countries like Ecuador and Colombia and targeting 100% electric in 2030 and 2035!

All the hard technical and financial problems have been solved. If your city isn't adopting electric buses yet, it will be solely due to political reasons.
by kop316 | 2026-02-22 20:51:34+00:00
So something that you can do with PDKs is add your own custom standard cell and tell the EDA tools to use them. This is actually pretty smart, this way you can use most of the foundry cells (which have been extensively validated) and focus on things like this "magic multiplier", that you will have to manually validate. This also makes porting across tech nodes easier if you manage only a handful of custom cells versus a completely custom design.

(I have my guesses as to what that is, but I admittedly don't know enough about that particular part of the field to give anything but a guess).
by thot_experiment | 2026-02-22 20:51:34+00:00
Neotokyo! If there's one thing I could ask everyone to take away from this thread it's that the Neotokyo soundtrack by Ed Harrison (2 cds worth!) is a fucking masterpiece and even if you don't play any of these games go listen to it please. I much preferred playing Dystopia back in the day but holy fuck does the Neotokyo soundtrack slap.
by tootie | 2026-02-22 20:52:00+00:00
I have a similar setup at home with a homemade dashboard. It's less polished and I've never implemented smart home (don't use any smart home devices) but it's calendar, weather, air quality and subway alerts. I also took the tack of building the UI with Bootstrap 3 so that it will run on any of my ancient devices like a gen 2 ipad air. I did it as much to usefully recycle old screens as anything else.
by lich_king | 2026-02-22 20:53:17+00:00
The thing is, this doesn't come down to merit. Search engines is what made Wikipedia popular because for two decades, they sent every other query there. And in the past, there was no alternative, except for spammy mirrors and paywalled sites.

I don't like the idea or the execution of Grokipedia, but it's already showing up in my search results. If it continues to rise, it will become a real threat to Wikipedia even if it's full of errors and LLM-speak. Most people won't know or care. They're already being served compute-constrained AI summaries in search and most are loving it.
by Herring | 2026-02-22 20:55:37+00:00
Half right. I’d use Singapore or Vienna as the ideal housing model instead. China started off using housing as a financial instrument. People were pouring their life savings into 2nd and 3rd apartments because the stock market was unreliable & capital controls prevented investing abroad. Prices skyrocketed. Now the bubble has burst, and the state is desperately trying to pivot to the Singapore/Vienna model, where the governments buy and own unsold inventory. It’s not going so well.

Of course none of this matters to the US or to this thread. Half this country won’t even wear a simple mask to save their neighbors lives. Forget about coordinating public housing.
by larard | 2026-02-22 20:55:42+00:00
That is the exact passage I found so shocking - if one finds the code in an open source repo, is it really acceptable to pass it through Claude code as some sort of license filter and make it proprietary?

On the other hand, next time OSX/windows/etc is leaked, one could feed it through this very same license filter. What is sauce for the goose is sauce for the gander.
by jrochkind1 | 2026-02-22 20:56:14+00:00
I don't knowingly have any live cameras or microphones in my home other than my laptop and phone (I know those are big "buts", but still), and I plan to keep it that way.

I remind myself of this no matter how much convenience I may be missing out on. (Getting a TV without em is kinda hard!)

Planning in advance, same for any AR stuff, not in my life, I'm sticking to it.
by stared | 2026-02-22 20:57:40+00:00
$2000 is a step price.

I had some fun with using an Inkplate e-ink display - bough a bare 5" for €74 (a 10" with batteries is there €219).

It connects via WiFi, and make it display random, vide https://github.com/stared/Inkplate-Arduino-library/tree/rand....
by mschuster91 | 2026-02-22 20:57:50+00:00
No surprise, it's Cloudflare:

$ host freedom.gov
freedom.gov has address 172.67.219.106
$ whois 172.67.219.106
NetRange: 172.64.0.0 - 172.71.255.255
CIDR: 172.64.0.0/13
NetName: CLOUDFLARENET

A lot of Cloudflare is netblocked during soccer games in Spain, this has been a thing for years now.

This is not a dedicated block against freedom.gov, it's just the ordinary collateral damage from the fight against sports piracy. Sigh.
by thechao | 2026-02-22 20:58:08+00:00
I'm pretty sure we've had a collapse in trade hours available per capita at a rate that's far exceeded productivity gains. If a GC has a fixed labor pool that can build at either 200$/ft or 600$/ft, then labor constraints basically makes the housing market an open auction. Housing costs have gone up because you're bidding on the final cost overhead per foot. The result is the trades aren't paid more: just the house does. (Nicer finishes, etc.)
Show HN: I Made a Hackenbush Web Game – Normal and Misère
by csamuelssm | 2026-02-22 20:58:15+00:00
I made this Hackenbush web game, an implementation of the game created by John Conway! You can play against the computer or against a (in-person) friend, choose between the Normal and Misère version and load your own games easily.

It is still a work in progress, but I'm very happy with how it is right now, and so I would like to share it with you to get feedback and opinions about it.
by Bender | 2026-02-22 20:58:38+00:00
Give it a shot and see. It could be some facet of AI image generation is unique to other processes that it knows about. Try a few of them.

Semi-related it was able to spot the fake Ghislaine [1]

[1] - https://www.youtube.com/watch?v=pEA6Cwzwip8
by toomuchtodo | 2026-02-22 20:58:53+00:00
Your disbelief is a you problem. Parenting is just one of my many roles, it isn’t who I am. It is a temporary obligation as a guardian.

If all one can say about their life is they were a parent and had/raised kids, in a world with 8-10 billion people, that is nothing special in my opinion.
by epistasis | 2026-02-22 20:58:57+00:00
The major reason California is expensive isn't because of the things that make it nice to live here, it's because a faux-environmentalist love of sprawl and protection of single family zoning from denser, more sensible housing options for those that want them.

Instead, Californians with high incomes, but not enough to pay the outrageous price for ownership, pay outrageous rents to landlords that repackage unupdated 1970s starter homes at extreme luxury prices.

Once we stop letting landlords exploit productive labor by removing the regulatory capture, the quality of life will increase, merely through allowing more people to experience the higher quality of life. However, reversing that trend is proving extremely difficult, despite fairly widespread support among the voting population.
by embedding-shape | 2026-02-22 20:59:04+00:00
FWIW, Vodafone ES still resolves freedom.gov via their own DNS resolver. They're usually very block happy, can't access Anna's, TBP and also not Cloudflare during La Liga games normally, as some examples. But freedom.gov still resolves seemingly.

Can any other Spaniards confirm if freedom.gov still resolves for them?
by rvnx | 2026-02-22 20:59:04+00:00
Until these workarounds are progressively made illegal or required to provide identification.

https://www.generation-nt.com/actualites/vpn-age-mineurs-roy...

It's not ok at all, because such operators will get punished if they don't.

Therefore they will more and more respect the law to block sites, etc.
by arwhatever | 2026-02-22 20:59:20+00:00
For fun, ask your preferred LLM (or perhaps a google search would also work?) for specific questions that lifestyle polygraph interviewers typically ask to throw you off your rhythm or to establish a baseline for later questions. No joke, it's an absolute riot.

More seriously, I'd be reluctant to take a polygraph-based job. If the very concept is flaky and you fail out at the beginning, no big deal. But I'm not sure I'd want to invest in a career in which something that flaky could on its own start creating career problems for you years or decades in.