MurphyA/hacker-news huggingface dataset:
by gnubison | 2025-11-04 03:25:01+00:00
Strang does include that. I just checked the fourth edition, like you say you did. Scrolling down two pages to get to the first page of the table of contents, I see the heading “cosines and projections onto lines”. I navigate to that section and it explains all the logic, proof, and intuition behind the connection between angles and dot products. Please don’t spread misinformation…
by threatofrain | 2025-11-04 03:25:14+00:00
You're still talking about performance. I'm talking about how much you have to build.

When people use Redis/whatever, are you surprised that speed is just a side benefit and ergonomics is what they're looking for? Those are the same ergonomics you'd have to rebuild, as opposed to not build at all because it's already there.

If you want to rebuild Redis in PSQL you are very much in the "you better know what you're doing" territory, and you're also very much in the "are you sure this is your core business value" territory as you rediscover how much nice stuff was packed into the Redis ecosystem. And how am I supposed to uncover the surface or ergonomics of your Redis replacement?
by cholantesh | 2025-11-04 03:28:43+00:00
Right, because over the course of the past 400 years, those institutions have always worked everywhere and no one's ever been at the margins of the justice system, been arrested arbitrarily or ignored by the police, had to languish in jail without a charge, been denied access to competent attorneys, a fair and speedy trial, or been subject to institutional biases and unwarranted imprisonment. Certainly that would never happens in a territory where it has happened routinely for 70+ years.
by gugenflop | 2025-11-04 03:29:22+00:00
Pinch (bookpinch.com) | Product Designer | Full-time | Chicago, IL or remote

Pinch is tech-enabled concierge med spa. We empower healthcare entrepreneurs by enabling Nurse Practitioners to deliver aesthetic services directly to clients in the comfort of their own homes.

Pinch is seeking it's first product designer. We are looking for a UX-focused designer who is eager to work at an early-stage startup where they can wear many hats and make a big impact on the product.

Email me: jonah [@] pinchmed.com. Include what excites you about the role and why you think you might be a good fit.
by kamaal | 2025-11-04 03:29:53+00:00
In time Mainframes of this age will make a come back.

This whole idea that you can connect lots of cheap low capacity boxes and drive down compute costs is already going away.

In time people will go back to thinking compute as a variable of time taken to finish processing. That's the paradigm in the cloud compute world- you are billed for the TIME you use the box. Eventually people will just want to use something bigger that gets things done faster, hence you don't have to rent them for long.
by buu700 | 2025-11-04 03:29:55+00:00
I was curious and looked this up: https://en.wikipedia.org/wiki/Modem#1950s

Mass production of telephone line modems in the United States began as part of the SAGE air-defense system in 1958, connecting terminals at various airbases, radar sites, and command-and-control centers to the SAGE director centers scattered around the United States and Canada.

Shortly afterwards in 1959, the technology in the SAGE modems was made available commercially as the Bell 101, which provided 110 bit/s speeds. Bell called this and several other early modems "datasets".
by humamf | 2025-11-04 03:30:15+00:00
Location: Jakarta/Asia (GMT+7)

Remote: Yes

Willing to relocate: No

Technologies:

- Languages & Frameworks - NodeJS/TS, React, Python, Numpy, Sklearn and Golang.

- Other: AWS S3 and equivalent, K8S, Postgres, MySQL, Kafka

Résumé/CV: https://drive.google.com/file/d/1ieEsGjAJFhXMd9dlDu7QqLNs-r1...

GitHub: https://github.com/humamfauzi

LinkedIn: https://www.linkedin.com/in/humamfauzi93

Portfolio: https://humamf.com/projects.html

Email: humam.fauzi.93@gmail.com

Hi, my name is Humam. I am a product software engineer for over 7+ years. Developing critical, high volumes products like logistics and finance. You can see more detail in my CV or you can visit https://humamf.com/about.html
by tptacek | 2025-11-04 03:30:59+00:00
That's page 171, 13 dense pages into the section on orthogonality, long after he's introduced the dot product, in a section where he says, in italics, "the orthogonal case is the most important"; he gives cosines about half a page before going back to a perp b.

Nobody said Strang never mentioned cos θ --- that would be weird --- only that his sequencing doesn't treat the angle formula as fundamental, even in the section introducing it. And nobody has ever read Strang and thought projections didn't matter.
by kmdupree | 2025-11-04 03:33:59+00:00
Avantos | Lead Fullstack Engineer | Remote (US) | 150-200k

We're building an AI notetaker and task management tool for financial advisors. Company is headquartered in NYC. Although the role is remote, quarterly travel to the office is expected.

Front end: React

DB: Postgres

APIs: Golang

Infra: AWS ala Terraform

Apply here:

https://docs.google.com/forms/d/e/1FAIpQLSd4JRq-lvpsA8GGnyrd...
by amluto | 2025-11-04 03:34:15+00:00
Cloudflare’s whole admin console is rather incoherent. The tunnel configuration makes very little sense unless you understand the product in quite a bit of detail, and the docs don’t help. And sites, tunnels, DNS config and such are entangled in bizarre ways. Oh, and there’s console zero and one, and they seem to reroute to each other basically arbitrarily :(

It would be awesome if there was a way to view the console that actually reflected how a request routed through the system.
by gnabgib | 2025-11-04 03:34:52+00:00
Posted > 30 times, popular in:

~2023 (38 points, 8 comments) https://news.ycombinator.com/item?id=34952741

~2022 (11 points, 10 comments) https://news.ycombinator.com/item?id=31335495

~2015 (31 points, 10 comments) https://news.ycombinator.com/item?id=8842118

2012 (208 points, 130 comments) https://news.ycombinator.com/item?id=4435547
by bigiain | 2025-11-04 03:35:29+00:00
That can be offset by not requiring the same sort of range that's typically assumed to be required.

While I'll be likely be riding my ICE bikes for decades because one of the things I do on them is trips with 1000 or 1500km days, truth is the vast majority of my riding is sub 25km round trips from my place. Most of my friends places, a lot of the places I shop or socialise, and the office (which I pretty much never go to any more) fit inside that range. And most of those trips take place on roads with a 60kmh or slower speed limit. _Maybe_ a few short sections of 80kmh.

For all of those short trips, I probably don't even need 2kWHr worth of battery, maybe only 1. The electric motorcycles available around here seem to start at 7 or 8kWHr, and go up to over 20.

The downside to that is the smaller the battery capacity, the smaller the short term peak power it can deliver. The sort of cell chemistry and construction typical in those sort of bikes seem to be limited to 10 or 15C peak discharge, so while their 8kWHr battery can peak at 80kW or just over 100hp, if they downsized the same pack to 1kWHr it'd probably only deliver 10kW peak power.

On the other had, alternative cell chemistry and construction can look way better. I have a few LiPo drone battery packs rated at 60C continuous and 120C peak. A 2kWHr pack of those would give me 120kW continuous and 240kW peaks. Quite likely though at the expense of much greater risks of catastrophic fire. I've had a few of those pack catch fire while charging and one that self combusted in an almost explosion like fashion when I slammed the drone into a concrete pole at about 120kmh. I can totally see why an electric motorcycle manufacturer with warranties and safety reputation and legal/regulatory obligations wouldn't want to accept that risk.

I'd love an electric motorcycle that's "fun" enough to ride, and gets 25km or so reliable range. But it'd need to be at least a bit price and "fun" competitive with my little bikes, a 117kg 125cc ~25kW two stroke and a 138kg 250cc 24kW fourstroke. I have no doubt it'd be possible, perhaps even easy to build an electric bike with the same "fun" power to weight ratio, but right now not down to the sort of price that'd make me take on a project like that.
by F3nd0 | 2025-11-04 03:35:30+00:00
I think that’s a stretch. They may have hoped for the Fediverse to be used a certain way and/or by a certain kind of people, but the network itself and the design thereof don’t really reflect, support or enforce this in any way. (I also haven’t read any statements by said figures on this, although I know some of them do care about these topics a lot.)

In practice, there is no authority nor built-in mechanism to decide what people should be talking about on the Fediverse. Everyone is free and even encouraged to host their own server and make it about whatever they like. I’ve seen guides explain how federation works and encourage newbies to pick a server they like and try to have a fun experience, but I’ve never seen them present specific topics as inherent to the Fediverse, much less mandatory. And that doesn’t feel like abuse, but the way it’s intended to work, and has been advertised to work from as far as I can remember. And frankly, I find it disturbing to think it should work any other way.
by NoPicklez | 2025-11-04 03:36:41+00:00
I agree with a number of points in here, however I think much of these issues translate into other areas of nutritional misinformation like fats are bad, quitting sugar etc. A lot of these are the result of poor nutritional education on the basics and are spouted online to create followers.

> For many households, processed foods provide convenience, affordability and stability.

This is a good point, just like many of us grew up eating cereal that might've had high amounts of sugar, its not necessarily a bad thing on the face of it if you're an active person. But if you read the label many cereals are low fiber high carb, which isn't inherently bad, unless you're spending all day on the couch.

However, we are moving into a world where a lot of our foods and their nutritional labels focus on macro nutrients (Carbohydrates, proteins and fats) and only tell half of the story. With many foods containing ingredients that are not nutritionally beneficial for the body, with many suggesting that these chemicals used as part of processing being quite harmful for the body over time. That doesn't mean we should shame or flat out stop people from eating them, but we should be educating people on what these are.
by samtheDamned | 2025-11-04 03:37:51+00:00
> when eye-tracking software was used to test the claim [camelCase is easier to read than under_score], two conclusions emerged: (1) developers are equally accurate regardless of style, but (2) the under_score style can be processed faster and easier.

I hadn't heard about hype for this but it's cool to see that it was put to the test.
by metadat | 2025-11-04 03:38:00+00:00
Even kids who grew up wealthy and attended Harvard might go on to murder a health care executive. This article sums it up pretty cleanly IMHO, the health care system in America is infuriatingly unfair. Is the goal to help people or just extract extract extract until they are dead?

https://news.northeastern.edu/2024/12/10/luigi-mangione-unit...
by amypetrik8 | 2025-11-04 03:38:28+00:00
I was just in Silver Spring MD, just outside of Washington, DC, and I noticed that all those kids moved from Guatamala to DC! The American dream! All the kids in Silver Spring spoke Kaqchikel, one of the Mayan languages, at home. We need more Kaqchikel-speaking children in the Silver Spring area to add to diversity, so that it's not just a primarily Spanish-speaking-only area, but a Spanish-and-Kaqchikel speaking area.
by CuriouslyC | 2025-11-04 03:39:49+00:00
It's a lot more complicated than that. They need to be able to take the island very quickly with a decapitation strike, while also keeping TSMC from being sabotaged or destroyed, then they need to be able to weather a long western economic embargo until they can "break the siege" with demand for what they control along with minor good faith concessions.

It's very risky play, and if it doesn't work it leaves China in a much worse place than before, so ideally you don't make the play unless you're already facing some big downside, sort of as a "hail Mary" move. At this point I'm sure they're assuming Trump is glad handing them while preparing for military action, they might even view invasion of Taiwan as defensive if they think military action could be imminent anyhow.
Show HN: I gamified passwords to make them easier to remember
by benthayer | 2025-11-04 03:40:07+00:00
I recently got locked out of an account that I deliberately set up to be airgapped from my password manager and that got me thinking how to make passwords less forgettable. After several iterations that led me to the concept of using a sequence of deterministically generated word grids where the grid depends on the previous words of your password and the next word of your password is one of the words in the grid. Instead of forgetting you can just vibe your way through the grids and recover your password like that. The passwords are longer to account for the entropy reduction from using the grid but I find it to still be a lot more memorable and pretty impossible to forget.

It basically just hashes the password and takes a mod of it to get the indexes in the word list for the next grid. You could easily make your own and integrate it with an existing system in like a day or two to replace passwords. You could also use the hashes as seeds to generate AI images if you wanted to iterate further and make it really distinctive. Could be interesting to see if users actually like it / want to use it. Probably makes more sense for airgapped/high security use cases like mine though. What I built is just a proof of concept that I might use personally but I’d love for you to try it out and see what you think. Obviously you shouldn’t actually use it for your passwords since I could hypothetically be logging your data or take it down/change the algorithm but maybe it’s fun or cool or inspires you to build something similar
by robocat | 2025-11-04 03:41:21+00:00
> boomers

Often used as a hateful word to justify some awful statement. It is mostly a synonym for retirees - something that hopefully we all have a chance to be. And for a fair comparison we need to compare our own future as retirees against the current cohort of retirees.

I get it: "Baby Boomers owned 52% of the country’s net wealth despite comprising only 20% of the population" sounds terrible as an aggregate statistic. But individuals are not the group. It is hard to find a good statistic that is representative of a normal individual e.g. a median figure can be useful; yet a lot of American data is reported as averages per household (highly misleading).

> people who have more wealth (talking about the majority of predominately the boomers, not the uber wealthy

But the uber wealthy are what cause the problem with using aggregate statistics...

The richest 1% of the global population owns approximately 82% of the world's wealth

That's the issue, not the boomers. Retirees get fingered because they are an easy target, not because of any statistical facts.

Don't you sometimes wonder if the things you say about boomers, will likely be said about you in a couple of decades by those younger than you? Perhaps consider those behind you, not just those in front.

Disclosure: I'm not a boomer (and the label is somewhat nonsense in New Zealand anyways). Aside: I know millennials struggling to get a house, and I also know millennials that have got onto the housing ladder. There's no simple answer...

Edit: "New figures show nearly 14% of all houses in Japan are empty" -- so maybe demographics will fix house prices in other countries (excepting high demand cities)?
by eru | 2025-11-04 03:41:49+00:00
Good luck fitting an exponential to the table of population over time in eg https://en.wikipedia.org/wiki/Demographics_of_San_Francisco

Of course, you can do it piecewise, but you can also fit a piecewise linear curve (or even a step function) to any graph.

Or fit an exponential to the graph in https://en.wikipedia.org/wiki/World_population

Just eyeballing the global data from 1950 to 2020 it looks like linear growth would be a much better fit than exponential.

You might also want to look at logistic growth, see eg https://sites.math.duke.edu/education/ccp/materials/diffeq/l...
by doubled112 | 2025-11-04 03:42:04+00:00
Can confirm.

My lips and gums go numb but my teeth generally do not. I am sure it takes the edge off, but I can still feel it and it is still incredibly uncomfortable.

On the other hand, while having a tooth pulled and opting to be put under, the nurse and I were having a great laugh after because I was so awake. Apparently there are multiple drugs and whatever the first one was hit me so hard they only have me a half dose of another. It was enough though. They said count, I hit nine, and I woke up somewhere else. Exactly what I wanted considering local doesn't work.
by tombert | 2025-11-04 03:42:15+00:00
I don't. I have their "platinum" insurance, and they still seem to fight any claim we file.

For example, my wife got knee surgery recently, and the doctor recommended we rent a CPM machine to help her knee avoid atrophying. Renting the machine is $200 a week. Insurance said it was "optional" and refused to cover any of it. We ended up buying a used one on eBay for about $900, which is a lot but not insurmountable for us.

It kind of annoys me though, because not all their clients are yuppie software people who have disposable income. A lot of people can't afford to rent a machine for $200 a week or buy one for $900 on eBay, but they do make it much easier for the leg to heal better. Isn't "stuff that most people can't afford but would help with healing" the stated purpose for health insurance? It seems more than a little unfair that my wife's leg is more likely to heal better purely because she's married to a software engineer.

I really have no fucking idea what the difference between the cheap and expensive UHC plans. It sure seems like I'm paying many thousands of dollars more for medical stuff than I was for equivalent services with Anthem. Oh, well, at least my premiums are higher too, so that's fun.

Hopefully obviously I don't advise shooting a CEO for several reasons (both ethical and legal), but I have to say that I was unable to cry many tears when I heard it happened.
by PaulDavisThe1st | 2025-11-04 03:43:29+00:00
> any more than Geico causes car repairs to be expensive

Given how much cheaper things like body shop repairs are if you do not have insurance, is it really clear that Geico does not cause car repairs to be expensive?

And for that matter, get emergency health care without insurance and then fight the cost to get a massive reduction, and you'll wonder whether it actually is UHC and their ilk that help make healthcare unaffordable ...
by yieldcrv | 2025-11-04 03:43:45+00:00
you can create a solo 401k that contains both a traditional and roth account, and roll over from your old employer's 401k to the traditional solo 401k, and do a conversion to the roth account

there are caveats to this, like always being attached to your solo 401k plan makes you ineligible for contributions to an IRA all the time, but you will be able to have rollovers into the IRAs, you also might decide that the solo 401k is a superior product to IRAs in every way

if you are not currently eligible to create a solo 401k, it is very easy to become eligible with a single dollar of 1099 or schedule C income the year you make it, and then it can exist in perpetuity

corroborate that with your licensed professionals. many gurus overlook the solo roth 401k mostly due to SEO and their audience of professionals that associate "401k" with "corporate employer thing", as opposed to something at parity with a traditional and roth IRA and expanded in capability
by stickfigure | 2025-11-04 03:43:59+00:00
> Turing Test

IMO none of the current crop of LLMs truly pass the Turing Test. If you limit the conversation to an hour or two, sure - but if you let a conversation run months or years I think it will be pretty easy to pick the machine. The lack of continuous learning and the quality dropoff as the context window fills up will be the giveaways.
by jonah | 2025-11-04 03:44:00+00:00
Wow. We're probably more rural and can't fit such large apparatus in many places we have to go. Out our type 1 engine carries 1,000 gallons, and our type 3 (wildland) 500 gallons and our tenders have 2,000.

1,000 isn't going to put out a house fire unless it's really small and not fully involved. The past two good structure fires we had took 20,000 and 60,000 to gallons respectively.
by droopyEyelids | 2025-11-04 03:44:32+00:00
Here's a point about all the insurance companies: UHC administers the medical plan on behalf of your employer. For all practical purposes, they are a whipping boy for the real 'man behind the curtain' (your employer).

Your company (for self-funded plans) actually decides what’s covered and what isn’t, sets copays and deductibles, and ultimately saves or spends money on healthcare costs. UHC’s role is to apply those rules, maintain the provider network, and handle the billing and customer service.

If your company offers insurance, there is someone who can tell the "insurance company" to cover the service they are not covering. Usually the HR Benefits Administrator, or 'plan sponsor'. And they do it all the time! If you have a sad story and the budget is ok for the quarter, they will help! If you are a company officer, you can also have whatever your company can afford.
by Crestwave | 2025-11-04 03:45:27+00:00
There are lots of ways to cook oysters, which significantly lessens the briny taste and gelatinous texture.

While it's true that their rise in the West was mostly from clever marketing, oysters are just considered normal seafood in many countries and are cooked into dishes.

But yes, the premium price due to the raw oyster trend makes it not worth it if you live far away from the sea.
by tombert | 2025-11-04 03:46:29+00:00
I really hope my employer changes to pretty much any of the other ones eventually. I really hate having to argue on the phone with with a poor representative over everything.

Anthem BCBS and Aetna never gave as much trouble. I know they both have their scandals and it's not like I love any American health insurance company, but I definitely rank UHC lower.
by potsandpans | 2025-11-04 03:46:42+00:00
For anyone reading this that thinks anything this person is saying is compelling, I urge you to do your own due diligence.

The sentiments mindslight are expressing are harmful, and could someday land you in a lot of trouble (but I hope you never have to deal with anything like it).

It's simple: never talk to the police. They are not your friends.

https://youtu.be/d-7o9xYp7eE

The only thing you ever say to "clear things up" is "lawyer."
by dreamcompiler | 2025-11-04 03:47:48+00:00
Exactly. Back when I was a newbie we melted all the lights on the engine as well as on my own truck since I was first on scene POV (Personally Owned Vehicle). And of course we charred some hose but that's common. Then CHAOS happened (Chief Has Arrived On Scene) and he quickly moved both trucks farther away from the fire, saving the county (and me!) the cost of a new truck.
by gruez | 2025-11-04 03:48:59+00:00
>Isn't "stuff that most people can't afford but would help with healing" the stated purpose for health insurance?

I thought the operative term was "medically necessary"? "would help with healing" can theoretically cover everything from protein shakes for knee injuries, to iPads to help with stroke recovery. A CPM machine is on the far end of this, closer to "medically necessary" than the other examples, but you have to draw the line somewhere, so some reasonable-but-theoretically-optional equipment gets excluded.