skysight-inc/HackerNews huggingface dataset:
A rocket that's thrown away was cheaper per flight than the shuttles, which were only partly discarded. It all depends on how much does it cost to build vs refurbish. Falcon 9 was designed to be easily refurbished and Ariane 6 was designed to be cheap to build. Also, launch campaign costs are not neglectable - moving the parts around, fueling, testing, and so on, are expensive.

Their next-gen ones should be reusable, and share a lot of design with the Falcon 9 family. Methalox might next, as it's very promising, but the RP1 supply chain is well established.
What's the labor?
It is FOSS, it's just not a free meal for FAANG & co.
Black people being unable to swim is a trope in the United States, to the point of being a racist joke. There's some truth to it - black neighborhoods were less likely to have amenities like public pools, and black families were generally less able to afford paid swimming lessons for their children.
> is nowhere to be found in the billions of appliances, etc.

It is unfortunately found in plenty of embedded systems. Usually not in cheap end-user appliances though where it is outpriced due to both the OS license as well as the hardware required.
We get rate limited when using Azure's OpenAI API. As a gov contractor working with AI, I have limited means for getting access to frontier LLMs. So routing tools that can fail over to another model can be useful.
It’s sad that instead of developing new technologies to fight global problems like poverty and climate change, the best engineers in the world are working on preventing people from using their own devices however they want.
Training of Physical Neural Networks
We should require seatbelts in cars.

It should be your choice to wear one.

If your kid can't swim, it's your job to teach them or keep them safe. If you're not doing that, should it not be on you, that Childs parent, to deal with it?

Where does personal responsibility start, and social intervention begin? Autonomy, responsibility, individuality are the things that should be under discussion... Not save the children.

You might think that's harsh but add in privacy to the above list, and make the topic "searching all your pictures for CP" (as some laws are attempting to do) it suddenly becomes over-reach.
About coding, yes for many years because of burn out.
if that is the case why do people ever license covers?

to clarify - I thought you just had to negotiate with the cover artist about rights and pay a nominal fee for usage of the song for cover purposes - that is to say you do not negotiate with the original artist, you negotiate with a cover artist and the whole process is cheaper?
It's bit like the "too big to fail" that happens to banks, but "too strategic to fail", which is common in aerospace with dual civilian/military applications.

Companies in that space can have islands of inconceivable incompetence that remain surprisingly stable.
> so that prices for labor will go down

wut? Any one creating anything is DELIBERATELY driving price of that thing down for you I guess.
See if you can get a job in enterprise world. While result might vary, as developers, you are fairly removed from the politics. As long as you fall in line, you get a lot of freedom. If you are good, and with a little luck, you get to join really good teams, and you'll get better projects as time goes on.

That being said, if you want to be in the Special Forces, you better be really really really good. I don't mean just technology, but handling product managers, managements, etc..
Microsoft tries to clear the air with mountains of CO2 credits
Multiple Queues vs Prioritized Queues for SaaS Background Workers
Will add the link to the website ;)
This still doesn't allow train spacing of less than the braking distance. Braking distance of trains is large (due to high uncertainty in track friction), which still means trains are typically 1 minute or more apart when moving fast.

As long as you have comms with the trains around, it's clearly possible to safely go less than the braking distance, as long as you can be sure of the behaviour of the train ahead, even in the case of an equipment failure (ie. in case of a power failure, it will not slam the brakes on, but decelerate at X m/s^2).
You are assigning an arbitrary minimum value of suffering to the term "suffering".

That is needless. Suffering a tiny little bit from losing the option to play with floatation devices is still suffering.
In Latin America, Your Zip Code Determines Whether You Live in a Democracy
64% of people not happy about idea of AI-generated customer service
Some US school districts (grades 1-6?) used to make it mandatory parts of their cirriculum, have weekly or biweekly trips to a local aquatic center.
I've tested this device and that works. Nice clean power on the microphones whilst running over POE.

https://thepihut.com/products/power-filter-board-for-raspber...

The chip you point to suggests a much simpler approach. Is it really that simple? There are a great many more bits on the board I point to. Why would they take a hard way if one simple chip can do it ?
What do you mean when you say they "still track you anyway"?

They don't set cookies. They're effectively the same level of tracking as a web server log file... except Plausible don't even collect and store IPs (unlike the server log).

That feels very different from cookie-based analytics platforms like Google Analytics.

More in their docs here: https://plausible.io/vs-google-analytics
In the Netherlands all kids have to learn to swim, and are taught during elementary school. There's various levels, the 3rd (IIRC) being able to navigate an underwater "obstacle course" while in school clothing and even with a backpack (I guess in case they fall into the canals on their way back from school). The obstacle course is something like just squeezing through a generously wide hole.
i honestly dont mind red light cameras per say (do think people should have the right to challege them bc technology isnt perfect all the time) but i absolutely loathe speeding cameras

not that i speed much but i have witnessed too many accidents where a person is going the speed limit (maybe 5MPH over) and they quickly slam on the brakes and go 15 MPH under while the car behind them rear ends them
whatsapp's and slack's text-myself was such a killer-feature for me! however, i think that was because i was already inside those apps constantly.
Is it Sweet Transit? The about section mentions that the developer was part of Factorio.

Edit to add link - https://www.sweettransitgame.com/
That's why you leave your kids peppercorns in your will
New Study Shows Which Antidepressants May Cause the Most Weight Gain
"another-dave" posted some in an adjacent comment:

https://news.ycombinator.com/item?id=40926228

Or did you mean something different?
High-Tech American Weapons Work Against Russia–Until They Don't
https://www.nytimes.com/2024/07/01/well/mind/antidepressants...
Thanks - this is exactly it.
> Basically, LLM's already partially encode information as semantic graphs internally.

There's an (underutilized?) technique here to take advantage of that internal graph: have the LLM tell you the related concepts first and then perform the RAG using not just the original concept, but the expanded set of related concepts.

So:

concept → [related concepts] → [[.. rag-rc1],[.. rag-rc2],[.. rag-rcn]] → summarize

With GPTs prior to 4o, it would have been too slow to do this as a two-step process. With 4o and some of the higher throughput Llama3 based options (Together.ai, Fireworks.ai, Groq.com), a two-step fan-out RAG approach takes advantage of this internal graph and could probably yield similar gains in RAG without additional infrastructure (another datastore) nor data pre-processing to take advantage of a graph approach.
(2017)

Still valid though, and a good read.
Moving block doesn't allow trains to get closer together than the braking distance. This would.
Lease Analysis Webapp – What do you guys think?
Hey Everyone,
I’ve been working with a friend of mine on a B2C lease analysis tool. Our research and interviews revealed that many tenants struggle to understand key clauses in leases, and approximately 20% end up in legal disputes with their landlords.
We’re not finished but we’re working to develop an MVP that simplifies complex lease vocabulary and allows tenants to redraft their leases quickly without needing a lawyer.
We'd love to hear your thoughts on the website and the business idea. Have you experienced difficulties navigating the lease environment when renting a home?
How extreme heat is affecting US transportation and infrastructure
New Glenn is a ground up unproven design. Ariane 6 is an incremental improvement from a well proven and highly reliable rocket. Just because they’re both making their first flights doesn’t mean they’re comparable as commercial offerings.

The cost to build a satellite is high enough that most customers don’t want it to explode. Until New Glenn has a solid track record they’re not really comparable.
The opposite 'toString' problem seems harder - I didn't try, but it should be possible now that std::string is constexpr.

I don't think you could parse it with, say, a class that has a std::string member (because of the transience restriction), but perhaps you can use lambdas that capture that string by reference, and call each other as appropriate?

As for exporting that as some sort of compiler artefact for use elsewhere, I am not sure how you would do that...
They might only be making $300/mo in donations, but the only reason I'm a paying customer of theirs is because the product is open source. When Fathom stopped maintaining their open source version I moved to Plausible, even though I am not self hosting.

The $300/month is absolutely ignoring the free marketing they get, plus the fact that many users such as myself only use their paid product because it is open source.
Surely it won’t be that hard to automatically detect and cut out parts with a sudden increase in volume and a change to the whole screen.
This sounds like memos[0] with the asterisk that I must pay the apple corporate overlords to use it, trust you with my data, and ultimately lock myself into what you allow me to do with my data

memos is FOSS, and I run it on my machine, without the need to trust you. it also has a nifty API around it

[0]: https://usememos.com/
Haven't heard of self-texting before, didn't even know it was possible. But I've been having a similar idea to this based off-of writing in a physical notebook. Basically my notes there end up sequentially, and I was missing this with my digital tools. My idea however was more of a "book mode" for a regular note-taking app where notes would be placed one after another on a long scrolling page.
This somehow seems to be a solution in search of a problem. The reason people use self texting is that they _don't_ want to use another app. Not because the existing apps are somehow missing features.

> I often defaulted to dumping notes into chat apps like Slack or iMessage

What makes you think people think differently about this app?

If people wanted all these features they would already all be covered by Apple Notes (Including the quick note feature, included in the OS when you mouse into the bottom right corner of your screen) but for free, encrypted and synced to all devices.
Chrome doesn't run in kernel space
The reasons for closing haven't really been elaborated on, just commented on as sad and devastating; I haven't managed to glean anything more from the rest of the article.

However, it's incredible to me to keep an organization like this going for 17 years. The landscape is constantly shifting and looking back at the world and technology from 2007, and even 2014, they've survived a lot. Going down now just shows how bad the market is in reality.
For the corporate donors, sure. Im sure the people running it were genuine though.
> Most people have at least some adverse reaction to sugar alcohols.

Citation? I have a decent number of friends who are sugar-free soda enjoyers. They don't seem to have any adverse effects from these sugar substitutes.

Can you link any papers about these adverse reactions?
Two operational, and a bunch of dreams.

Right now, Europe has a functioning rocket program under their own control.

I think it's understandable for an engineering community to talk about the tech, but people seem to be forgetting the geopolitics.
Yeah but that won't make me feel good
This was a special case. Much of Ukraine's connectivity came via donations from SpaceX, and via their commercial business. They gave free connectivity to Ukraine for a direct military purpose. There's legitimate reasons for why SpaceX would not want to be blurring the lines between the two. Programs such as the U.S. Foreign Military Sales program exist for this reason, providing a legal and contractual framework for such arrangements that route business through the state, with the legal and diplomatic oversight that comes with such.

SpaceX rushed to provide terminals to Ukraine for free when they asked for them, and that was laudable. But SpaceX had no mature defense sales program set up, or it was bypassed. I could argue that this was another instance where Elon's impulsiveness created issues that SpaceX would have to deal with down the line, such as ongoing payments and the lack of a shield for their commercial business.

Properly set up, a defense sale will include such things like a guaranteed minimum buy, service level agreements, and the legal and diplomatic framework to provide a level of shielding to the contracting company from third-party complaints to alleviate the risk of an arbitrary service shutdown.
How would you make the distinction, in a way that is legally enforcable?

I can understand why people would prefer FAANG & Co. weren't re-selling their FOSS, but I don't see how you can pick and choose who has access to and is allowed to run your code, and still be open source. Maybe you could have an application process, where you decide to give a license on a case-by-case basis, that can be rescinded later. But I'm not confident you'd get much traction.

The OP's point is that product owners want the benefits of being open source, but are frustrated with the downsides. You can't have one without the other, they are two sides of the same coin.
A few points on that. First, in 25 years of front end dev at scale I can't think of a time when a site I've worked on has ever actually made a site wide change to the styling without it being a big deal. It's always a lot more work than just changing some CSS because you have to consider things like whether you actually want to change every button, what background color the buttons are sat on, what text color it has, whether the color you choose should be applied everywhere or just in dark|light mode, and so on. Site wide changes are a big deal and the actual code is a relative small part of that.

Secondly, with the componentization of web apps this is largely quite simple from a code perspective. All the other complexities remain but changing a Tailwind styled button isn't much hard than changing a CSS class.

Lastly, designers are moving to design tokens applied in Tailwind config or CSS vars. This decouples the colors from the classes and turns them into config that's exported from an app like Figma, with tools to automate that export as a git PR if you're feeling technical.

These things were hard to do. People in front end tech have thought about that and built tools to make it a lot easier.
It looks like this is what it is actually. It's very expensive for what it is though (at least for me as a European).
I like the simplicity, and good job for shipping it.

“Privacy. Always. We promise”

This kind of stuff always gets me thinking. Why should I trust random app developers? I don’t even trust giant corporations with this.

I have seen Chrome extensions bought out and silently changed. And I have sold iOS apps myself!

Capitalism and Competition and Closed source Centralized software distribution just makes me always worried. Whatever promises are given (“open”AI!) can be either false already or enshittified tomorrow.

And then who is foolish for trusting it? https://www.businessinsider.com/well-these-new-zuckerberg-im...

Why not use open source?

Actually, the main reason is The Web. It doesn’t have an effective way to guarantee a file at a URL will be static, the way, say, IFPS does. And same goes for the App Store. Telegram struggles to tell you how to do verified builds.

I think we may need a “trusted app” with IPFS based distribution, and various auditing agencies publicly signing software updates. It doesn’t need to use a blockchain because code only ever accumulates, so it’s a crypto CRDT essentially. But it could be replicated across many networks including DHT based ones like IPFS, Bittorrent and Hypercore.

That at least reduces a user’s Trusted Computing Base to the OS and one app (like a crypto wallet or an authenticator or browser) that they trust. There should be a way to never update that app via the app store.

Frankly, I think privacy will never get better than that because the manufacturer can technically always exfiltrate stuff (as Windows already does and touted with Recall).

But for running TRUSTED PROGRAMS, at least, I feel there can be blockchains and other decentralized networks. Trusted programs (ie smart contracts) are valuable for communities to trust code, even if it doesn’t enforce privacy.
> Motorcycles can't use the left lane?

Trucks. It is very conspicuously posted 2-4 times a mile. See https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXIV/Ch... (I live in MA) and https://www.findlaw.com/injury/car-accidents/no-trucks-in-th... (To see how these laws change by state.)

> A 26,000lb vehicle, going down a 5% grade, with brake failure, goes whatever speed it pleases.

Don't get bogged down by corner cases. This is why there are runaway truck ramps when this is a risk.

> The general public, famously, does not have the skill set needed to make correct measurements here

That is how authoritarian leadership justifies itself. You clearly do not have the maturity to be part of this discussion if you have to resort to authoritarianism and "ends justify the means."
> Crashes would be avoided by having every train know about the train ahead and behind

Isn't this a block system?

> it is not allowed to slam the brakes on if there is a train right behind you

So if we have three trains in close succession and the first derails or loses power, the second is not allowed stop because there's a train behind it?

> Trains are usually 10's of minutes apart, or at least 1 minute apart even in urban subway systems.

At least on the London underground it isn't unheard of for the next train to be arriving in 1 minute. Most delays are caused by passengers, not infrastructure.
First off, thanks! This does look like a fun way to learn things.

Secondly, FWIW, when I read the the term 'excercises' in the HN title I interpreted that to mean exactly a learning tool and not interview prep. The term "Challenges" in the website title is maybe a little less specific.
Like all other mandatory education, school. Works fine in the UK:

> All children should be able to swim 25m by the end of primary school

https://educationhub.blog.gov.uk/2021/07/13/did-you-know-swi...
At least there's a last ditch source of preserved protein available when the dark times hit.
Review of rent control literature finds wide range of adverse effects
Had an issue thus deleted it

Please refer other comment in which I’ve added the link to the PRs
Diet Coke is notorious for having higher caffeine content than its brethren. Edit: I mean, that's why I love it
Here is the link to add on the Personal Egress Air Packs, and a crew member activating Smiths PEAP

[0]: https://en.wikipedia.org/wiki/Personal_Egress_Air_Pack
This makes me wonder how I ever found the hidden tracks on the X-Files soundtrack. Must have been an accident.

https://www.youtube.com/watch?v=nYyA1Mc3KZM
You can choose to interconnect them but that is neither required nor default. It depends on what you want to build.

You can have a simple policy on a resource that just allows something, or you can make a complicated bi-directional set of policies that refer to specific principals, resources and actions to constrain it more. That will never go away if that is what you need to build. And it is still optional because if you don't want to build that, then you just end up with your single, not-inter-connected policy.
Huawei was selling sanctioned hardware to Iran, and hiding it.
Swimming lessons in school, from age 8 or so, organized like any other education (every second or third gym lesson in a couple of semesters was how it worked for me), and no need for consent?

Pretty sure that's how it works in most countries that have public swimming education.
Hmm nice... I wouldn't subscribe to something that expensive though. And I don't like the offline/batch method.

I'll just use my tablet with one of the many HN reader apps. I don't really have eye strain issues. But I wish them well.

I like the layout though.
Curious. If you are using the hosted version, why do you care about it being Open Source ? More of a backup plan in case they go under or is it more about Trust or both ?
Show HN: RemindMe – Close your 100 tabs without fear of forgetting
I built RemindMe, a Chrome extension to solve the "too many tabs open" problem:

https://chromewebstore.google.com/detail/remind-me/khacpeclo...

Key Features:
* Set reminders for specific websites
* Close tabs and free up memory without losing track of important pages
* Reminder frequency: Reminders are checked every 5 minutes
* Simple, intuitive interface for easy task management

It helped me cut from 20+ tabs to under 5, significantly improving browser performance.

Important setup note: Enable Chrome notifications in OS settings (macOS: System Preferences, Windows: System Settings)

I'd love to hear your thoughts and experiences if you give it a try. How do you currently manage your tabs and bookmarks?
A self-hosted docker-based system has a different audience from an Apple AppStore app. Don't be that "dropbox is just ftp and rsync" guy.
The anti-Musk hatred here is hilarious. You nerds are so insulated you’ve forgot what things you should get pissed off about. Think Elon is one of them? Lmao GOT EM.
> space start-ups are starving, because nobody sees any business opportunities there

I’ve raised money for and invested in space start-ups. There is a lot of opportunity. There are even more vapid PowerPoint decks.

> If somebody actually wanted a reusable rocket, the real issue would be engineering, not funding

It’s absolutely a problem of funding. You need to be able to tell a group of highly-demanded engineers with other life options that they will have access to the materials and resources repeated destructive validation of exorbitantly-expensive kit requires.

That doesn’t mean any numpty with a few billion can do it. But, like, Europe could. (It hasn’t because that would threaten Ariane 6.)

> Even a small country like Finland could run two programs the scale of Ariane 6 with the money it's currently using to support Ukraine

But they don’t.
Telegram's Saved Messages (essentially self-texting) is also commonly used for saving info, somewhat recently they even added tagging and the ability to view messages that you forwarded into there per chat (so you can see all messages that you ever saved from some group you're in). Of course it all lives on their cloud and is not local.
Is it a trope, racist joke, or simply a statistic that needs to be known for the safety? According to CDC, child drowning victims are 3:1 blacK

>>Every day, there are nearly 10 accidental drownings in the U.S., according to the Centers for Disease Control and Prevention (CDC). That’s 3,500 people every year who die in water. Within these numbers is a startling fact: the fatal-drowning rate of Black/African-American children is three times higher than white children.
Can AI Be Meaningfully Regulated, or Is Regulation a Deceitful Fudge?