skysight-inc/HackerNews huggingface dataset:
Sure, whats fundamentally difficult about setting up a federated instance? Its just a db, and backend/frontend service. You can put in a docker container and run it in minutes.

Things tend to get centralized because users want to be where users are. Developing another platform doesn't change that. Even if that platform just straight up does not allow centralization, it doesn't stop people from using centralized platforms.
In retrospect: the earliest recognition of a conserved quantity was Kepler's law of areas. Isaac Newton later showed that Kepler's law of areas is a specific instance of a property that obtains for any central force, not just the (inverse square) law of gravity.

About symmetry under change of orientation: for a given (spherically symmetric) source of gravitational interaction the amount of gravitational force is the same in any orientation.

For orbital motion the motion is in a plane, so for the case of orbital motion the relevant symmetry is cilindrical symmetry with respect to the plane of the orbit.

The very first derivation that is presented in Newton's Principia is a derivation that shows that for any central force we have: in equal intervals of time equal amounts of area are swept out.

(The swept out area is proportional to the angular momentum of the orbiting object. That is, the area law anticipated the principle of conservation of angular momentum)

A discussion of Newton's derivation, illustrated with diagrams, is available on my website:
http://cleonis.nl/physics/phys256/angular_momentum.php

The thrust of the derivation is that if the force that the motion is subject to is a central force (cilindrical symmetry) then angular momentum is conserved.

So:
In retrospect we see that Newton's demonstration of the area law is an instance of symmetry-and-conserved-quantity-relation being used. Symmetry of a force under change of orientation has as corresponding conserved quantity of the resulting (orbiting) motion: conservation of angular momentum.

About conservation laws:

The law of conservation of angular momentum and the law of conservation of momentum are about quantities that are associated with specific spatial characteristics, and the conserved quantity is conserved over time.

I'm actually not sure about the reason(s) for classification of conservation of energy. My own view: we have that kinetic energy is not associated with any form of keeping track of orientation; the velocity vector is squared, and that squaring operation discards directional information. More generally, Energy is not associated with any spatial characteristic. Arguably Energy conservation is categorized as associated with symmetry under time translation because of absence of association with any spatial characteristic.
This is incredible news. In the next 10 years more and more transportation will shift to self driving and save thousands of lives and prevent many more injuries. Already in San Francisco waymo's are and feel much safer than human driven rideshare.
In SF, up-front prices have been comparable to Uber’s, except that you don’t have to pay tip, which automatically makes it 15–20% cheaper.

The few times I’ve tried it, the service has been good and its driving was safe. The only downside is that there seems to sometimes be longer wait times.
A Boy Who Was King of Vanilla
Web Replay Tool – Replay Network Requests from Site for Archiving
https://corecursive.com/066-sqlite-with-richard-hipp/ is an interesting interview with the lead developer for SQLite about the inspiration and work that went into that testing as well.
At this point, the burden of proof is the other direction. All crypto is a grift until it proves otherwise.
They’re much safer, and tech has already stolen from drivers (via 50% cuts). Yes, we do want safer transportation. Evolving as a society is important.
My point is you can DIY that strip/reglaze work. If you contract it out it will be expensive, yes.

Wood windows on the old property have fared much better than plastic or aluminum. Plastic fared the worst.

Condensation will happen, but wood won't rot unless it can't dry out. It can dry out because you heat the house for one.

That said any material will take damage if you let water intrusion (plastic frames too!)

If water gets behind paint in painted wood, it'll rot.

Some windows have better details for this - the trim and sill are sloped so that any water will naturally drip out instead of gathering.

The windows that survived a long time tend to have those trim details that seem esthetic but are really functional.
I've already seen self-driving waymos on freeways (as they are called here) within SF.
How long will it take for this to go into effect?
They’ve always had approval to go up to 65 mph, but it was Waymo’s decision not to go on the highways. They’re starting to do it [1] and do a lot of freeway testing, so it might happen sooner.

[1] https://waymo.com/blog/2024/01/from-surface-streets-to-freew...
I've tried them about three months ago. They're a good experience, but maybe slightly worse pickup/dropoff than an Uber, and no less expensive, so they're kinda more "fun to have done once," than anything else.
> Sixty years ago, timber companies began to grow Radiata Pine in countries like New Zealand and Chile. Grown for quick production, these trees produce very little heartwood and these trees have fewer growth rings per inch.

So is the difference between old growth and new growth primarily in the type of trees? Or are there other factors that contribute to speed of growth?
Not at all my experience and I get a ton of value out of Waymos.

> steal jobs from ordinary people and give them to the tech industry

technological progress is good, it is good to reallocate people's talent if we no longer need drivers
I use Waymo all the time in Phoenix and Scottsdale too, and it's great.
Purple Spring: Enchanting Blossom Explosion of Jacaranda Trees in Mexico City
Bang Bang. Change the Oculus policy to collect more data if you have a Meta account, remove all Oculus accounts. Now all Quest users biometric data will also belong to Meta, this will work out great.
> people underestimate how much of a quality of life improvement these are for people even when compared to Uber/Lyft

I do underestimate it. What are quality of life improvements? Seems to be the same thing from a customer perspective.

I guess if you are concerned for your safety from the uber driver it is an improvement but it is the only one that comes to mind.
NIMBYs don't want progress if it makes their lives more difficult, even if it's only in their mind.
>> Do we want our roads getting clogged up with super slow taxis

Can't we just pass some laws that require Waymos to drive above the speed limit at all times, like normal drivers?
yes or perhaps returning home? i have frequently wanted to go to south bay, it doesn't even let you go to the airport
The point is though that this is definitely not a task to evaluate an LLMs intelligence with. It's kind of like laughing at Einstein when he wouldn't be able to decipher hieroglyphs in any language without previous training for those hieroglyphs. Could Einstein potentially learn those hieroglyphs? Sure. But is it the best use of his time - or memory space?
Still no Oakland :( Hopefully that's next.
I often experience ChatGPT given outdated information which is wrong at this time, but wasn't necessarily wrong in the past. One big example is a popular framework for Laravel called Filament [0] which released a V3 a few weeks ago. I don't even bother anymore with it because it is useless. However, for example 90% of my DevOps tasks (mostly Kubernetes) are partially done with Kubernetes, either explaining impact or even writing manifests. It is genuinely awesome for that.

[0]: https://filamentphp.com/
It would cost some money but one could quite easily create wifi jamming detection for a whole city.

It's simply staying ahead.
when does this roll out?
Not sure how to use an .mp4 video in the README.md - demo video is here: https://github.com/alshdavid/web-replay/blob/main/.docs/demo...

Wrote this tool for performance testing the client-side portion of a web app, removing the latency introduced by the server - but it can be used for website archiving, modifying content for demos and so on.

Supports patching sites, injecting code, rewriting responses, adding latency to responses, etc.

Thought it might be useful for someone
So far I haven't used it for payments, I just recieved free coins some of which I changed to USD. I guess the people swapping USD for Worldcoins may regret it one day but it's their choice to buy or sell the things. So far they are doing ok - I sold for around $2 and they are now nearly $8.
The Crisis at Google
This is a complicated comment.

Do they really drive that slow... Or just, like, the speed limit? Or generally safe(r) driving speeds? All things equal, slower is safer!

Why would roads be anymore clogged than they are already? Because transportation becomes cheaper? So should we jack up fuel prices or insurance prices so there are fewer cars on the road? Real questions.

And onto the "stealing jobs" comment... Under this ethos, why would anyone automate any task?
All that is true of regular type as well to some degree, I guess my point is a standard of readable url type could have all those qualities.

Also the longer a url is out in physical space the more danger of it being replaced online, longevity may not be desirable.
The underlying problem is that when you pin a site to your home screen, that site gets a separate application identity and storage container[0]. SpringBoard shows it as a separate icon and window in the multitasking view and Settings shows a separate settings page for it, too.

If you squint a little, you'll notice that this sounds a little like the problem Craig Federighi cited with Xbox's cloud app. Namely that Apple doesn't want multiple apps wearing the same 'trenchcoat', so to speak. But they also don't want to actually implement the APIs necessary for an app to break itself apart in the UI and pretend to be multiple apps. So you can't have multiple icons on the home screen, or launch with different storage containers and permissions depending on what app was touched. You can't even have a dependency that gets shared across multiple apps, like what Microsoft wanted with the streaming and authentication code for Xcloud. Ship multiple copies.

Personally this still smells like malicious compliance. Apple does literally all of the things I just mentioned and has been doing them since iPhone OS 1.0. Any security issue caused by an app having two icons can be remedied by the exact same review process that Apple insists they need to be the kings of anyway.

[0] On Apple "device" OSes, each installed app has it's own sub-home directory inside the user's home directory (/var/mobile). This is called a container.

Originally the container had both the app install and it's data; but those were split around iOS 9 so that apps could write to shared containers. That's also why some apps don't actually show up on the Storage view in Settings, and instead there's a separate entry for the developer as a whole.

Containers don't exist on macOS. Mac App Store apps and iOS apps on macOS live in /Applications and write to your user home directory.
What Is the Ordnance Datum
"We've never had to wear helmets before, why start now?"

There are only a handful of image codecs that are widely accepted. Essentially just GIF, PNG, and JPG. There's a smattering of support for more modern formats, but those three dominate.

Adding a fourth image format is increasing this attack surface by a substantial margin across a huge range of software. Not just web browsers, but chat apps, server software (thumbnail generators), editors, etc...

This is the kind of thing that gets baked into standard libraries, operating systems, and frameworks. It's up there with JSON or XML.

You had better be damned sure what you're doing is not going to cause a long list of CVEs!

JPEG XL is a complex codec, with a lot of code. This increases the chance of bugs and increases the attack surface.

A (surprisingly!) good metric for complexity is the size of the zip file of the code. Libjpeg is something like 360 kB, libpng is 350 kB, and giflib is 90 kB.

The JXL source is 1.4 MB zipped, making more than twice the size of the above three combined!

The other libraries use C/C++ not because that's a better choice, but because it was the only choice back in the ... checks Wikipedia ... 1980s and 90s!

We live in the future. We have memory-safe languages now. We're allowed to use them. You won't get in trouble from anyone, I promise.
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Please be irony.
Are there simple "quick wins" type guides, that one could apply to an Android app or a small HTML site, to make it closer to 508 compliance that is mentioned?
In europe, you don't pay tips to uber drivers. Surely, if the tip is compulsory, it should be called a service fee
While autonomous driving helps a bit on safety, that's just one of the many issues with the car dependence in our society. It might even expand the issues, if it ends up with less people using public transport and relying on these kinds of things.
Ranges from slightly cheaper to a lot more than uber (usually about equal or slightly cheaper if you count tip)

Pickup time is significantly more, especially if you are trying to get picked up in the west of the city
The Impact of Input Length on the Reasoning Performance of LLMs
^^ this. I wrote one for the same reasons. Also for links to internal tools in chat, as it makes for shorter more concise messages.
Can't wait until they expand to europe
These positions are all labeled as "Hybrid" (2-3 days on-site). Could you clarify that these are 100% remote? If not, please change your post to reflect this.
I was about to ask the same thing; I have a hard time seeing the ways it ends up a net gain when driving is still a decent job for a lot of people, and rideshare drivers keep to themselves anyways
where I live, show up time is usually around 7-20 minutes compared to around 2-4 for Uber. in the west of the city, it is more commonly ~15-20
not as many languages as you'd hope unfortunately, but plenty do (see eg other reply you got, there are more still including F# etc etc)

+ other languages get close, eg Kotlin has nullable types (which is a poor substitute) and Result (which is also poor because it's not a true Either)

that said lots of languages these days have libraries that do it (Arrow, Vavr and countless others)

IMO the killer simple language that Go tries and fails to be would be something like a Kotlin+Arrow with heavily reduced syntax and features, eg

no exceptions (use Either or a correct Result type)

no loops (use map, fold etc)

no nulls (use a correct Option/Maybe type)

etc etc

= in such a language, we learn that methods return things, those things will be what they say they are (guaranteed by the compiler), they will tell you what you can do with them, and if a program compiles, you can be pretty damn sure it works as intended

insert "all the languages are broken, I should create a new language" meme here...
Yeah that one comes to mind. Personal safety is often a factor influencing public transit decisions as well.
Reading this reporting (Christo Grozev == quality always) reminds me of the experience reading of The Sword and the Shield by Christopher, MI5 historian (https://en.wikipedia.org/wiki/Mitrokhin_Archive) and just shaking my head at the complex web of money, ideas, and corruption spun and counterspun by various spy agencies. The Archive blew up stuff dating back to tsarist Russia, and exposed some brilliant operation, and tons more pedestrian money-grabbing. These days with OSINT the exposure of it no longer relies on someone sneaking out paper in huge milk jugs and suitcases like Mitrokhin did.

And as a russian who came to states as a refugee it also boils my blood to see how much my former homeland is stirring the pots and slinging sh*t around the world and how many people can be bought. It is all going to end in a huge explosion 1917 style and a disaster for
so many.
Sounds like your parents were overprotective. Why did you have to wait until you were 6 to use a pocket knife? Why couldn’t 6 year old you go to the pool by yourself? Your parents were overly worried with protecting your physical nature. They robbed you of years developing your own ability to assess risk.
it's not compulsory and culture is different in US
Look at some overall browser/os usage stats and say again that the web isn't relevant on mobile, and look at browser usage stats for desktop and android and claim again that firefox would have a relevant market share on ios if browser choice was free. Those claims seem pretty disconnected from reality.
couldn't* care less
Show HN: Do Not Reply Cards
Cards to manage your replies by.
It's cheaper than Uber if you're the type of person to tip your Uber driver 20%. Very infrequently it's cheaper without tip, but usually it's a bit more expensive.

Crucially, it doesn't care if you ask it to drive into heavy traffic. I'm so over Uber giving me an estimated time for pickup, having the driver get within range to learn additional details about the trip, then cancelling on me because it doesn't fit their desires. I was late to a reservation a couple of weeks ago because I wanted to go downtown during Superbowl Weekend and an estimated 3 minute pickup morphed into a ~20 minute delay as I waited for an Uber driver to commit to the drive.
Waymo is awesome. Got to try it 3 months ago in Phoenix, love the whole experience. Amazing to see how the car deals with every trick thing that you find in traffic. Plus the Jaguar they use is a great car.
judging by the article, he'll be selling perpetual motion devices and cancer cure in the next 3-6 months.
I said nothing about the ratio of dysfunctional organizations to non-dysfunctional, nor did I encourage OP to switch jobs or even try to change something in the org. All I said is that their organization is dysfunctional and hiring new people into the dysfunctional teams will do absolutely nothing to fix that.
The best approach would be to instruct it to under the hood call a function for such asks and hide the fact that it called a function.
I love how in C++ there seems to be this security issue, and now hundreds of people try to come up with different ways on how to tackle the problem.

Everybody wants to help and spend their free time on it.

You don't see this in other languages so much. People just use those languages and "they" have to fix any flaws.

Also keep your bingo cards ready for people saying Rust does not have undefined behaviour.

I'm also not so sure Rust is even that safe. Yes it's memory safe but the languages with the most vulnerabilities is not C++. It's PHP, .NET, C, Java, JavaScript.

C++ is not an unsafe language. You can't make a language safe by adding an "unsafe" keyword end expect everything outside it to be safe. Else .NET and Java would be lower on the list than C++ because they do have bounds checks and they don't have raw pointers.

It's a bit of a false sense of security and a play of words this "unsafe" keyword in Rust.
And... https://archive.is/2024.02.29-152604/https://www.economist.c...
This article aims to be your guide to mastering SEO specifically for GitHub Pages. By following the advice here, you can make your site not only visible but also attractive to both search engines and visitors.
Data on “most”?
Approval is effective immediately, but no idea when Waymo will deploy vehicles in those areas. Their fleet size is small (~700 cars).
> If it was horizontal, it wouldn't affect turning at all.

And then it becomes a god damn Beyblade in a crash.
5 and 3 in front of 4 and 6 is an unusual take.
We work a bit in the space focused on sleep.

My non-medical (I'm not a doctor or scientist) opinion based on my exposure to the controversies and theories I've looked at over the last 4 years is that Alzheimer's is not 1 disease.

Alzheimer's is diagnosed by ruling out other potential issues. Cognitive decline not related to hemorrhages, strokes, thyroid issues, etc get lumped into Alzheimer's (from my understanding).

This theory of the autoimmune system response is interesting, as it suggests why the amyloids exist, but it doesn't necessarily point to them not being part of the issue.
they drive conservatively but at reasonable speeds
That does sound high profile. Why did they tour him through Russia though? Talk about unwanted attention. And why ruin this lucrative business via stupid fraud?
I hope longer because my house is 70 years old and all wood. It’s single wall construction, also. I’m really enjoying not having to worry about plaster wallboard or anything since the wall boards are all actually wood, too. I do see boards that need to be replaced soon in the eaves but I live where it rains a lot so that’s expected.
Having a car to yourself is honestly just way better, maybe I'm just antisocial

Like I will easily pay a premium to have self-driving most of the time. I can play my music on the speakers, I can work more comfortably in the car, etc. etc.

Also, I find Uber drivers are pretty bad drivers often - comparative advantage
Flywheels as the primary powerplant will never find its way into vehicles because there is no way to brake them in the few milliseconds before they become rotational bombs in a crash.
Reporting bias
> What are quality of life improvements?

Not having to tip. Having the car take a sensible route and not some idiotic detour Waze thought was clever. Having a car that’s always paying attention instead of being on a perpetual phone call. Being able to make phone calls without feeling obnoxious or worrying about one’s rating. Being in an objectively safer ride. Not having to listen to a rant about how the angel Mohamed saw was actually a demon because he was scared or get given a sermon about why being gay is evil. Not having drivers cancel on you because they don’t want to go where you need to.
I think they mention every platform for marketing because once the device is rooted, they can extract data from any app. That doesn’t mean the vulnerability was in the app mentioned, nor that it was the fault of an app at all.

At the end of the day, it’s between platforms (specifically iOS and Apple) and these exploit devs/traders, afaiu. That’s why Apple hates them. For better or worse, putting a torch under Apple’s ass is probably a good thing for the rest of us.

OTOH, you could argue that Apple should be more of top of these things and reward the security researchers better. Things are better than 20y ago, but still it’s probably more lucrative to sell exploits to these shady actors than to scrape the floor for peanuts in hope that mega corps will reward their discoveries.
While we're at it, do we really want our textile mills getting clogged up with dangerous mechanized looms that steal jobs from ordinary people and give them to the capitalists?
Private transit*. Uber and Waymo are private transit.

Something to note is that actual public transit (buses and trains) has something like 10x fewer annual deaths than private vehicles, because fatal accidents almost never happen in them.

Personal safety is a much less statistically relevant concern compared to personal injury.