MurphyA/hacker-news huggingface dataset:
by closed | 2025-09-05 02:54:47+00:00
I have used numpy, but don't understand what it has to do with dataframe apis

Take two examples of dataframe apis, dplyr and ibis. Both can run on a range of SQL backends because dataframe apis are very similar to SQL DML apis.

Moreover, the SQL translation for tools for pivot_longer in R are a good illustration of complex dynamics dataframe apis can support, that you'd use something like dbt to implement in your SQL models. duckdb allows dynamic column selection in unpivot. But in some SQL dialects this is impossible. dataframe apis -> SQL tools (or dbt) enable them in these dialects.
by presentation | 2025-09-05 02:55:05+00:00
Don’t need to do what China did, can use other countries with adequate housing as a different model, like where I live, Tokyo. Ample housing construction driven by the market not by central planning, paired with large amounts of fast public transportation to increase the amount of livable area near the city center; loose zoning requirements; simple and easily understood checklists evaluated by a fast and efficient civil service bureaucracy for permitting with minimal involvement of the courts (the opposite of the USA); convenient and self sustaining neighborhoods. You can still get small apartments within 15 mins of public transit commute distance to central Tokyo in nice neighborhoods for less than $400/mo; there’s a foreign speculation problem in the most central areas (likely to be clamped down soon) but by and large it’s affordable to live here.
by jose-cl | 2025-09-05 02:55:41+00:00
Hi mdaniel! Thanks a lot for your feedback. The last thing I added were the audio assets (music, shooting, reloading), and the game ended up quite heavy — so yes, it definitely needs an initial loading bar. On another note, I wrote "WASD" + "R" assuming I’d be sharing the game with people who usually play, so sorry about that. The idea behind the different weapons is: pistol → accurate but a bit slow and with short range, rifle → accurate and long-range, machine gun → low accuracy and medium range. Were you able to see that there are several types of zombies? Thanks again for your comments. José.-
by hdjrudni | 2025-09-05 02:56:59+00:00
What rate is he getting on his crypto? I get ~4% on my fiat.

Some cryptos are doing better than that, so it's certainly possible to beat, but I wouldn't chance the volatility. Unless it's doing better than that.. then I think inflation is eating the crypto, not the other way around?

Edit: I see, because Bitcoin isn't adding additional coins, it's "non-inflationary". I think this is moot when you ultimately have to transact through fiat, so the only thing that matters is BTC-USD conversion rate.
by whatsyoursource | 2025-09-05 02:58:40+00:00
There are currently 2 types of +/-:

Support/Refute - this allows you to assess the credibility of a post, and you must provide a citation. This affects the credibility score of the post.

Trust/Doubt - this allows you to "predict" the credibility of a post, and if it turns out you predicted correctly, your credibility increases. And vice versa.

The +/- actions are designed to have some friction. You are either required to find a supporting/refuting citation, or you are putting your cred on the line.

The "contributed to the conversation" isn't something I am directly addressing, but am hopeful that good actors will stay on topic, and that credibility scores will sort out the good actors from the bad.

Yes, actions are weighted by the cred of the voter.

The selling of accounts is an interesting one. Haven't thought about that. Of course, once misinformation is posted, their cred will go down. One thought is to monitor the cred trend of accounts, and abrupt changes could be looked into.

Thanks for your great feedback.
by MangoToupe | 2025-09-05 02:58:53+00:00
This is one of the most disturbing things I've ever read.

> Bi isn’t anti-surrogacy—in fact, she frequently advises other investors who are pursuing it and sends me links to startup after startup. Sheel Mohnot, a venture capitalist friend of Bi’s who has commissioned twiblings, said the problem is that information is siloed when “each agency has their own database of wombs.” In this model, surrogates are the gestational equivalents of Uber drivers or Amazon warehouse workers. “There should be a database of carriers allowing us to filter on what we want: age, BMI, willingness to abort the fetus,” Mohnot said.

No. Shut it down. Everything about this is sick and twisted.
by ChrisArchitect | 2025-09-05 02:59:00+00:00
[dupe]

Another day, another substa...

Lots of discussion just a few weeks ago

https://news.ycombinator.com/item?id=44941118

https://news.ycombinator.com/item?id=44974104

https://news.ycombinator.com/item?id=44940944
by NickC25 | 2025-09-05 03:01:07+00:00
Perhaps I should have worded my statement differently - it's not that the players deliberately didn't challenge themselves, it was more that they were "encouraged" to focus on football. Especially in big time high school and college programs where there's just too much money and prestige involved for anyone to rock the boat or, god forbid take anything off the main focus of football.

For some players, too, they know the allure of the NFL can outweigh anything else, especially if they can run like the wind and ain't too smart but come from a really poor background. The school might know football is their best way out. Sad but true.
by arrogancepchzxp | 2025-09-05 03:01:46+00:00
I have read a book called "Chinese Characteristics" written by Arthur Henderson Smith, an American missionary, who also mentioned a similar idea: "How delightful it would be if people could combine the essence of both East and West, and walk peacefully on the narrow, thorny path of the golden mean."

Based on my own experience, Chinese society contains traditional thoughts from the feudal era, collective thoughts from the socialist period, and utilitarian thoughts brought by capitalist development, but it uniquely lacks individualism.
by fourgreen | 2025-09-05 03:01:59+00:00
I really advice you all watch some cartoon of the ex eastern block. For instance soviet ones:

https://youtu.be/l132u2nIpkI

https://youtu.be/o9GBZvI-U6o

Or Polish ones:

https://youtu.be/6O4sc7Gn0o8

https://youtu.be/wq8wfOp0PSM

Or Czech ones:

https://youtu.be/sVBrRv8s2jQ

https://youtu.be/vz5bw4EB0FQ

https://youtu.be/FwhROGiaGkc
by SoftTalker | 2025-09-05 03:02:10+00:00
Some assignments are bigger than can be done in one class period. And class time is for lecture; there isn't a lot of time for students to work problems on their own.

So we're just dealing with what (some) students have always done: get someone else to write the report or do the math homework. Or have parents pay a tutor to help. Or use Cliff's Notes instead of reading the book. But now it's trivially easy and free. There are no obstacles to cheating other than knowing it's wrong and self-defeating, and those are things that young people don't really have a well-developed sense about.
by ac29 | 2025-09-05 03:03:22+00:00
> 2 - 3 days to get money from one account to another is beyond embarrassing in the modern day

I've had next day ACH between all my various accounts for years now. Wires have also been a thing basically forever though most people need to pay to send and receive them. Same day ACH and FedNow are both out there too, though I've yet to see widespread implementation.
by derangedHorse | 2025-09-05 03:03:28+00:00
There are other issues to consider in the payments world. For example, I may not want my payment data to be used for marketing purposes[1] or have my payment processor block my steam purchases[2]. I'm skeptical that Stripe will deliver on those gaps though.

[1] https://www.gao.gov/blog/why-do-banks-share-your-financial-i...

[2] https://www.thegamer.com/paypal-not-accepting-most-currencie...
by beeflet | 2025-09-05 03:04:07+00:00
Why is it the job of private institutions to regulate the life outcomes of key political demographics?

Private institutions have the job of selecting the best candidates, and they don't have the right to discriminate against any candidates on the basis of race.

In one breath, supporters of affirmative action in this thread will deny that such discrimination exists, and in the other they will justify its existence. Clearly you must acknowledge on some level that it's not really defensible.
by lutusp | 2025-09-05 03:04:42+00:00
Such a shame. In an otherwise well-written article, the author mentions Cooley and Tukey's discovery of the FFT, but without mentioning that Gauss discovered it first, among others, each of whom approached the same idea from different directions.

The Wikipedia FFT article (https://en.wikipedia.org/wiki/Fast_Fourier_transform) credits Gauss with originating the FFT idea later expanded on by others, and correctly describes Cooley and Tukey's work as a "rediscovery."
by arcticbull | 2025-09-05 03:05:36+00:00
> The devastating impact of these scams is evident in the staggering losses reported globally. In 2024 alone, cryptocurrency investment fraud, largely driven by pig butchering schemes, caused over $5.8 billion in reported losses in the U.S. The anonymity and cross-border nature of cryptocurrency transactions have historically made these scams incredibly challenging to investigate and prosecute, allowing criminal syndicates to operate with relative impunity.

https://blockchain.bakermckenzie.com/2025/07/01/the-225-mill...

It’s slower, riskier, with less protection and usually more expensive than a classical financial transaction. So it self selects for criminals.
by nationsecwatch | 2025-09-05 03:07:59+00:00
Tan, Garry [@garrytan]. “Flock Safety currently solves 700,000 reported cases of crime per year, which is about 10% of reported crime nationwide. And they're just getting started.” X (formerly Twitter), 3 Sept. 2025, https://x.com/garrytan/status/1963256544524640456
by jibal | 2025-09-05 03:08:34+00:00
There was no explanation of how it's not circular. "what it's like", "subjective experience", "qualia" ... these are all undefined terms which are only "explained" by reference to each other and by frantic ostension. Someone mentions breathing in the morning air and when I note that that's an activity, I'm accused of bad faith interpretation ... which is sheer projection. People will insist that everyone knows "what it's like" ... and around we go again. When someone engages in that activity, they may have an emotional response (not everyone will, not every time, and the response is not always the same). But what is an emotional response? It's not some magical mental ether, it's a physical molecular process mediated by hormones and neurotransmitters that shift activity levels in different parts of the brain. People like Tom Nagel and David Chalmers claim that they can conceive of zombies that are physically identical to humans but aren't conscious, they have no qualia or mental states, "there's nothing that it's like to be them"--yet being physically identical, the exact same physical responses to breathing the morning air occur in them, the same emotions, even though they are "just" mechanisms. Well, we are mechanisms too, and whatever "it's like to be" us, it's exactly the same with zombies, and facile responses about "breathing the morning air" don't help at all and fail to grasp what the issues of the debate are. Most people have little knowledge of the debate and little experience with philosophical precision and clarity. Thus we get nonsense claims like that focusing on the "linguistics" of the words obscures the issue. They mean semantics, i.e., meaning ... dismissing what the words we are using mean is a mug's game.
by nikolayasdf123 | 2025-09-05 03:08:53+00:00
what a nonsense. they explicitly say "do not scrape us, unless we approve". they put paywalls and captchas. their service is literally selling access to users data.

now you scraping it. this is direct violation and direct harm to their business, despite their explicit statements for you to stop.

you loose the case, it is clear as day.
by toomuchtodo | 2025-09-05 03:09:09+00:00
I believe OP was looking for proof of this assertion, not a marketing tweet. Gary’s just doing his job talking YC’s book, potentially to juice growth and sentiment before an IPO. But, extraordinary claims require extraordinary evidence.

https://techfundingnews.com/275m-at-7-5-valuation-y-combinat...

> $275M at $7.5B valuation: Y Combinator’s Flock Safety to provide a public safety operating system that eliminates crime, eyeing an IPO

> To prepare for potential future public listing, Flock Safety has added Brandon Simins as CFO.

> Flock’s technology has proven instrumental in solving serious crimes, from homicides and assaults to human trafficking and organised retail crime. Notable successes include dismantling a human trafficking ring in Detroit, apprehending the Bay Bridge Shooter in San Francisco, and solving a $12 million jewelry theft in Denver. The company claims that its systems aid in 7% of successful criminal investigations in the United States, and in 2024, they stated that their devices “help to solve 10% of reported crime”.

https://www.ycombinator.com/companies/flock-safety (their primary YC partner is Gary)

They haven’t gotten a lot of great press lately. A lawsuit has been filed challenging the constitutionality of the surveillance system and Congress has opened an investigation.

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...

https://ij.org/wp-content/uploads/2024/10/2024.10.21-1-Compl...

http://krishnamoorthi.house.gov/media/press-releases/ranking...

https://krishnamoorthi.house.gov/sites/evo-subsites/krishnam...
by lenerdenator | 2025-09-05 03:10:47+00:00
> This would be accomplished by disseminating an operating system that is apparently inexpensive and easily portable, but also relatively unreliable and insecure (so as to require continuing upgrades from AT&T).

I remember watching a YouTube UNIX wars documentary that posits the exact opposite.

It argued that top brass at AT&T saw UNIX as a means to the telecommunications end, not a business in its own right. When it became more popular in the 1980s, it became obvious that they'd be bad businessmen if they didn't at least make a feeble attempt at making money off of it, so some exec at Ma Bell decided to charge thousands (if not tens of thousands; I can't find a reliable primary source online with a cursory search) per license to keep the computer business from getting to be too much of a distraction from AT&T's telecoms business.

That limited it to the only places that were doing serious OS research at the time: universities. Then some nerd at a Finnish university decided to make a kernel that fit into the GNU ecosystem, and the rest is history.
by mdaniel | 2025-09-05 03:11:32+00:00
Apologies, I knew what WASD was in the context of gaming, I just didn't follow what behavior they influenced in the game since I was playing it with a drink in my hand at first and it seemed fine :-)

I don't recall the shapes changing, but I also gave up after acquiring the rifle because I am not the target audience for this style of game. Balatro, M:TG, Slay the Spire, Factorio, and any of the Zachtronics games are for me

I do think the game was well executed, and I hope you and Gemini are proud of shipping it, and I also hope lots of people get enjoyment from playing it!
by abetusk | 2025-09-05 03:12:38+00:00
I have a pet theory that the reason why the FT, and other transforms (generating functions, Mellin/Laplace/Legendre/Haar), are so useful is because many real world functions are sparse and lend themselves to compressed sensing.

The FT, as are many other transforms, are 1-1, so, in theory, there's no information lost or gained. In many real world conditions, looking at a function in frequency space greatly reduces the problem. Why? Pet theory: because many functions that look complex are actually composed of simpler building in the transformed space.

Take the sound wave of a fly and it looks horribly complex. Pump it through the FT and you find a main driver of the wings beating at a single frequency. Take the sum of two sine waves and it looks a mess. Take the FT and you see the signal neatly broken into two peaks. Etc.

The use of the FT (or DCT or whatever) for JPEG, MP3 or the like, is basically exploiting this fact by noticing the signal response for human hearing and seeing it's not uniform, and so can be "compressed" by throwing away frequencies we don't care about.

The "magic" of the FT, and other transforms, isn't so much that it transforms the signal into a set of orthogonal basis but that many signals we care about are actually formed from a small set of these signals, allowing the FT and cousins to notice and separate them out more easily.
by BurningFrog | 2025-09-05 03:13:28+00:00
Teslas actually use 8 cameras for Autopilot/FSD, getting a full 360° view around the car!

Pretty wild to see several comments condemning their imaginary single camera system. Where do these lies come from?

Here is a diagram: https://www.researchgate.net/figure/Locations-of-cameras-on-...
by weddpros | 2025-09-05 03:13:47+00:00
My HackerOne dismissal reads

"Although your finding might appear to be a security vulnerability, after reviewing your submission it appears this behavior does not pose a concrete and exploitable risk to the platform in and on itself. If you're able to demonstrate any impact please let us know, and provide an accompanying working exploit."

I was disappointed, and as far as I'm concerned, HackerOne is 2/2 dismissals.
by juancn | 2025-09-05 03:14:03+00:00
Because PCIe bandwidth is higher than memory bandwidth

This doesn't sound right, a PCIe 5.0 x16 slot offers up to 64 GB/s. That's fully saturated, a fairly old Xeon server can sustain >100 GB/s memory reads per numa node without much trouble.

Some newer HBM enabled, like a Xeon Max 9480 can go over 1.6TBs for HBM (up to 64GB) and DDR5 can reach > 300 GB/s.

Even saturating all PCIe lanes (196 on a dual socket Xeon 6), you could at most theoretically get ~784GB/s, which coincidentally is the max memory bandwidth of such CPUs (12 Channels x 8,800 MT/s = 105,600 MT/s total bandwidth or roughly ~784GB/s).

I mean, solid state IO is getting really close, but it's not so fast on non-sequential access patterns.

I agree that many workloads could be shifted to SSDs but it's still quite nuanced.
by SAI_Peregrinus | 2025-09-05 03:14:18+00:00
One way (there are other ways to do some things):

`jj log` if needed to see what revision ID you need to use

`jj new <starting revision> -m <message>` to create a new change with a given message with <starting revision> as the parent. (you can also use the `--insert-before <revset>` and/or `--insert-after <revset>` to set the parent & child revison(s) for the new revision).

`jj bookmark set <feature 1 name> --revision <revset>` to make a bookmark (a branch name) on the revison you just made.

Make changes on this branch as desired. `jj new` for each new change you want to have its own revision.

If you added more revisions to the branch, `jj bookmark move <feature 1 name> --to '@'` (you can also use the change ID instead of '@', '@' just means "the current change you're editing").

`jj edit <starting revset>` to go back to your starting revset.

`jj new -m <message>` to make a new revset on top of the starting revset (the starting revset now has two children: it has branched)

`jj bookmark set <feature 2 name> --revision <revset>` to name the second branch you just created.

Make changes as desired. `jj new` for each new change you want to have its own revision.

If you added more revisions to the branch, `jj bookmark move <feature 2 name> --to '@'`.

`jj new <feature 1 name> <feature 2 name> -m "merge feature 1 & feature 2"` to make a new revision with the feature 1 & feature 2 bookmark revisions as its parents (this is a merge).

Alternatively, you could use `jj rebase` to move any number of commits to anywhere in the commit graph you want.
by alchemist1e9 | 2025-09-05 03:14:48+00:00
When I wrote that it seems I needed to give more context for those who don’t understand the benefits of self custody Bitcoin.

0.1% is fee to convert to USD and in context of converting anything to USD, like stocks or anything one would hold in an investment account it’s a low fee. This means I keep my liquid capital in Bitcoin which has a strong tendency to increase in value and yet whenever I need to spend it, it’s instantly spendable in multiple ways, literally instantly and for a very very low conversion fee.

I can also use a CC company and I agree there is a 2% cash back. There are multiple companies that are crypto focused and have issued CC and Paypal issues CC and I can settle the monthly balance using Bitcoin also.

What I predict is coming soon, maybe next year or so, if POS support in the US to offer that 2% cash back directly to the consumer from the merchant should they settle in alternative currencies, like Bitcoin, like USD stable coins.

The combined issue of interest payments on stable coin balances (custodial) and legal settlement rebates is what has the banks literally freaking out and starting to try and spread FUD about USD stable coins. They know their business models in the payments space is eroding and soon the money markets space is under pressure.
by CuriouslyC | 2025-09-05 03:15:14+00:00
My claim is that the "useful assistant for menial tasks" is the Wright brothers flyer to what we'll have in a few years. If you have voice chat with an agent on your phone that can just do everything you'd need an app for, what's the point of an app? And it's gonna happen, because if your app doesn't let people's agents handle their business and your competitors' does, people are gonna switch if they can. The computer interfaces of the future are going to be made for agents first.
by ruffsl | 2025-09-05 03:15:40+00:00
This isn't likely to happen or change, but what if subscribers were instead billed by usage? If you streamed 24 hours a day for the whole month, that could round out to $10 a month, but if less, then simply a proportional percentage.

Spotify would never forgo current profits from flat monthly plans, but then why shouldn't artists be granted the same advantages in royalties proportional to a subscriber's ratio of playtime if the subscribers are charged a flat rate any how?
by NoraCodes | 2025-09-05 03:16:19+00:00
> When everyone thinks they can and should be single, the housing requirements double.

In the circles I run in, most people who don't live with a romantic partner have at least two long-term roommates, mostly friends from college or made in adulthood. Several of these three to five person groups own detached homes together that no pair of them could possibly afford.

Famously, Shawnee, KS banned "co-living" a few years back, because (in the city council's opinion) too many people were living with others.
by cobbzilla | 2025-09-05 03:16:58+00:00
Regarding: “Find the emails of everyone who reacted to my latest LinkedIn post and send personalized outreach”

A forewarning and maybe advice to apply some heuristics — on another HN thread I received the brilliant advice to prefix my first name on LinkedIn with an emoji.

Now, whenever I get a message on LinkedIn that starts with “Hello [emoji] [first name]” I know it was automated spam, and I reflexively block the sender.
by int_19h | 2025-09-05 03:17:05+00:00
There are (or were, anyway) smart guns on the market. It's just that nobody wants to buy them.

As far as your comparison with misfires and jams, well... for one thing, your average firearm today has MRBF (mean rounds before failure) in the thousands. Fingerprint readers on my devices, though, fail several times every day. The other thing is that most mechanical failures are well-understood and there are simple procedures to work around them; drilling how to clear various failures properly and quickly is a big part of general firearms training, the goal being to be able to do it pretty much automatically if it happens. But how do you clear a failure of electronics?