skysight-inc/HackerNews huggingface dataset:
> But to reach say 0.25c, a tiny ion engine over a long enough time would suffice.

Tsiolkovsky says otherwise, by a factor of over 10^663 (not even counting relativity):

https://www.wolframalpha.com/input?i=1%2Fe%5E%2874900km%2Fs%...

…Seriously. I tried to figure out just how much xenon you'd need to make that work. But you'd need to be able to store it in something like 15-dimensional space to even fit it within the diameter of the observable universe. And even if your ion engine and Hubble-scale fuel tank weighed less than the mass of the lightest quarks, the amount of propellant you'd need for it to reach 0.25c is still well over 10^600 times the combined mass of the entire observable universe, and would also collapse somewhere around 10^600 times the diameter of the observable universe into a single black hole:

https://www.wolframalpha.com/input?i=2G%282.2MeV%2Fc%C2%B2%2...

Of course, this also shows the intent of my original comment: Energy density matters, and somebody packing enough to casually cross interstellar densities isn't going to struggle with a planetary gravity well unless Idk they're doing like a low-tech off-grid trend or something.

Also, skyhooks!
Yup. You can even customise both the inner and outer colours as an accessibility feature!
Haha, I’m in Germany
I move around a lot and have run into all kinds of weirdness when it comes to CPAP stuff. Any time you establish a new doc, if your CPAP prescription is more than 1-2 years old you need to do another sleep study, so I think I've done 6 different sleep studies over the years.

The other thing to remember about CPAP is that it's not just the machine, you have to get replaceable supplies - masks, air tubes, etc every so often.

While not nearly as bad as linked blog entry, my worst situation was with Kaiser in the SF Bay Area. I had gotten a CPAP through them and then a few years later moved to a different part of the Bay. I set up a new doc also with Kaiser, but the records don't easily transfer and since it's a different Kaiser respiratory team, I had to (of course) do another sleep study AND go through a CPAP orientation on how to use a CPAP despite me already owning and using a CPAP and just needing a new mask, etc.
2.3kWh is about 10kg of battery (more if LFP, less if NMC).
The shutter noise on smartphones is entirely optional. My normal iPhone doesn’t make any noise when it takes a photo.
This is too common. The author of the article asked for the wrong thing from the wrong people. He should have asked his sleep doctor (which he calls the sleep center) for a new CPAP. By asking for a repair from his insurance company, he caused himself lots of grief.

I doubt he has a list if his doctors that his insurance companies or doctors would agree with.
I wouldn't consider at least what would be 2 000 euros in today's money, "for cheap", in 1994's Portuguese prices for 486 clones.

Buying computers on those days were always on credit, beyond the more affordable prices of the 8 bit home systems.
I don’t have much in the way of
“Means”, I just enjoy breathing and set my priorities accordingly. Also, where I live the most expensive CPAP costs like 1800 EUR. Mine costs 900 EUR
* Ownership is very clear. In most GC languages ownership of objects is shared between everyone that can access it. That encourages bugs.

* You can trivially make objects immutable. That feature is tacked on to most GC languages (e.g. Object.freeze) and rarely used, if it's even available. Again mutability of everything encourages bugs.

* You can easily copy values.

* You can use RAII to deterministically and automatically clean up resources, and guard things (e.g. using mutexes).

These features are all in C++ too but Rust lets you have all that and memory safety (and it's better designed than C++).

A classic bug that you wouldn't see in Rust might be passing a list into a function and the function mutating it when you weren't expecting it to. Basically impossible in Rust.
Yes, but I think ownership is easier to prove when the product is inhouse, regardless of what reality is, if you can point at the thing that has the data in the room next door, that is easier to show than somewhere in cyber space.

For that reason I think these bespoke solutions are not going anywhere for the foreseeable.

In regards to the Post Office scandal, that same ballsup could happen in any cloud.
Lessons design systems teams can learn from open-source maintainers
The part I find most interesting is that the current political elite of ... I don't quite know what to call it. The US clique? Places that speak English + Germany + Japan and maybe a chunk of the EU. Global North perhaps.

Anyway, whoever they are seem to have limited interest in energy security. Much like someone who has no interest in food security, that is going to change at some point. The anti-nuclear lobby has done terrible things and should be ashamed of the position they've put us in. We'd be so much better positioned if they had been rational instead of panicked.

It is trivial to make people better off when the energy supply is growing. It is much harder (or impossible) to improve lifestyles at an industrial scale when it is shrinking.
> Here we tend to ventilate only once the fire is under control rather than during the rescue and initial attack stages. Cutting a hole in a roof to ventilate a fire is never done. Breaking a window is very rare.

Respectfully disagree. At the central FL fire dept I worked for (2006 - 2020) ventilation during initial attack was practiced and expected. The command to ventilate is given by the hose team once water is on the fire.

For my dept, breaking a window was probably the most used because a couple of reasons: 1) most houses are single story and 2) usually not enough people for roof ops, initially at least. First due is a 3 man engine, 2 man rescue (ambulance) and a district chief, with at least the same complement for second due.

2-in / 2-out rule kept crews off the roof but the 2-out could, and would, break a window.

Once additional crews arrive on scene, roof ops would be started if needed.

But, each dept and type of fires for the area are different. At our dept, single family homes, room and contents fire were the bread and butter, so roof ops weren't usually needed, but, breaking a window in a coordinated effort and in a strategic position was almost always done.
How does crypto add anything that just verifying email ID/phone number doens't provide. If you solution is to whitelist some certificates or key, you can as easily or even easier whitelist email IDs/phone number.
The Remembrance of Earth's Past has been on my list for some time now. Will you be finishing that trilogy?

Actively reading:

- Mistborn : Final Empire (~90% finished ding)

- 3rd novella in The Murderbot Diaries

- Dive into Design Patterns

- Fullstack D3 and Data Viz

Passively reading:

- The Design of everyday things (I don't think I will ever finish this book)

- Bhagavad-Gita as it is

- LOTR (mostly a re-read)
when a business has an r&d department it's inherently suicidal to consider any current activity as ‘core biz’ especially in a competition. your research department’s objective is to move the puck into new locations, hopefully evading your competitors, and your job as mother institution is to skate there. settling into any so-called core business is contra good business thinking. starting an r&d department isn’t.
It's linked at the bottom of the article, and that's the link that Dunedan provided.
The point is that what's common sense to an engineer is different than what's common sense for a lay person or an amateur. Their way of thinking is different. A lay person is not aware, doesn't know and can't mentally model the kind of power a microwave transformer can deliver: it's almost (almost!) an out of context problem for them. They just saw the pretty fractal wood burnings on tiktok and want to try themselves. And then they die[1]

That's the point of all the scary warnings, caveats and reminders. They're there for not-engineer-minded folks, so that they don't hurt themselves or set their house on fire.

[1] https://en.wikipedia.org/wiki/Fractal_burning#Safety
I'm not sure you answered my question.

Just don't use MAUI, in favor of anything else?
> It can happen though and that's why this guy should be doing his stuff for himself rather than broadcasting it to the world because the final product isn't 'good enough'.

That's exactly the point I've been trying to make. Of course "it WILL set your house on fire" is an exaggeration and other failure modes are far more common, but the fact that it is even a remotely-possible-but-plausible outcome means projects like these shouldn't carelessly be shared with the general public.
if reaching escape speed is impossible, building a work rocket is impossible.
I don't know. Based on how it is described in the article, you could detect it via the means you mentioned and raise them as warning flags to the user, but as a last instance there will still be users that ignore all the warning signs and be convinced by a good scam story.
A recipe for CVE waiting to happen, plugging a memory-safe-enough into the Internet, for someone to take advantage of a UAF that wasn't tested.
Avocado-Shaped Robot Makes Its Way Through the Rainforest
From the article:
> Listen, gobsmacked, as they explain that they decided your claim was in fact an appeal, and transferred it immediately to the appeals department. The appeals department examined the appeal and looked for the claim it was appealing. Finding none, they decided the appeal was moot, and rejected it.

Tell me why this is not fraud. Tell me why insurance company employees are not facing prison time.
You still don't understand what i meant. Breakage means you have not tested anything, it's your fault and your responsibility.

To stay near upstream is incredible healthy, software stacks are a living thing and should be treated like that, remember the Mainframe trap?

FreeBSD supports for example Java8, PostgreSQL12 and GCC4.8.

The port-tree has not just the latest upstream version available.

And why would i want a Red-hat-patched 6 y/o Nginx on my machine? No thanks.

>Yes, security updates are always a lot less risky than quarterly FreeBSD updates

Let's stop here when you start comparing apple with oranges.
Codeishot: One place to store, manage and share your code
To Stop Antarctic Glacial Melt: Scientists Propose Installing Giant Curtains
I started listening to "The Unicorn Project" on audiobook. It is not as good as "The Phoenix Project" audiobook, but it does a decent job of describing problems from the software engineer's perspective. The problem is I need a version of these books from Sarah Molton/Steve Master's point of view (a novel about being a product manager or CEO?) to better understand what motivates that side of the org. I have been mired in "The Core Chronic Conflict" for years, paying down tech debt, and turns out changing an org to learn/understand/care about DevOps is Hard.
It's a relief to see so much unnecessary stuff in there. Hopeful that it's possible to strip this down to 200g.

Almost seems like they made it too heavy on purpose, which might be explained by incentives on weight reduction. Better make the first version very heavy and reduce weight by 20g each version.
Evolution of a high-performance system: from synchronous to seamless scalability
not really. from my study (of both xerox and other companies with similar fate), it’s success that killed them. when you have a hugely successful product that people can’t seem to live without, and businesses can’t operate without, it’s extraordinarily difficult to plan and execute its demise in favor of something new. your business executives, skilled in the arts of racing to bottom lines, won’t side with you. they’d rather go down with the ship than keep jumping every 5 years or so.

edit: goes without saying that the best time to take on any largely successful company is approximately a decade from when they’ve been successful. that is to say, we’re on the cusps of a better payments api (ie stripe of this decade), better email (37signal’s hey), better e-commerce, etc.
This is used for homebrew. There is (of course) a WebKit exploit on some firmwares and there is a way to get arbitrary page load by going into the help section then bouncing around in several Google help pages until you get to a search box, search for the exploit page and click it.
You can have a single-threaded executor in Rust too, which can also share data across tasks with no synchronization. So Rust futures can be both.
A few days back I finished reading Accelerando by Charles Stross. It's really interested, the premise basically explores what a potential posthuman technologically advanced future could look like.
DevEx in Action
I take resource constrained over purposefully obtuse system. I can understand that people and medicine is expensive and inefficient(compared to farming and factories or tech). But at least these public systems seem to attempt to do stuff. And not be piled with bureaucracy to avoid paying out or increasing the prices.
It's easy. We just generate our own key pairs, establish a web-of-trust by signing each others public keys at in-person meetups, and then use those signed keys to authenticate all the digital communication we do with each other.

You know, like we've been doing with our emails since PGP was developed in 1991. You can tell how simple the process is, by how ubiquitous it has become in a mere 30 years!
“Secret transaction” is in the annual training of annual who handles money. That’s an immediate red flag, escalate to corporate governance officer.
> Please name them.

KlikAan/KlikUit aka 'Trust Smarthome', socket type ACC-250-LD, it's a 250 W remote control dimmer socket but on the front it is labelled 16/250 which for lay people would probably be highly confusing because it refers to the plug, not to the capacity of the device. The small print on the front of the plug part (so unreadable once it is plugged in...) is where the 1.136A rating is specified. Such small mistakes can have big consequences. A nice fat 250W MAX rating stamped on the socket side (black is fine, but red would be better) would go a long way towards dealing with my irritation about this stuff.
The essay comes off as somewhat naive. A lot of survival in corporate America is understanding what is left unsaid. The example of the boss asking for what the message should be when the person left is a pretty clear sign of where this person is headed, but they soldier on nonetheless.

It sounds like the person in question were a decent performer but had to be let go due to whatever reason. But instead of getting the subtext of the PIP they kept trying to soldier on… that’s just not how it works.
With Google Glass at least you were actually seeing their real eyes. I always got the vibe that the attitude came from the fact that 1) looking at you also pointed a camera at you 2) you could never tell what the person wearing the glasses was looking at while talking to you, if anything.

If people start wearing this thing to go grocery shopping, you'll probably get similar reaction. If people are obviously in the middle of doing something and you walk up to ask them a question, I'd expect that would be less of an issue.
Oh dear. I am left handed and I have not even considered the arrow is tilting the wrong way. Now suddenly it annoys me to no end. I need to replace my cursor ...
It's true, but I think it will sink again and many will be left holding the bag after buying the hype.

I don't see what they've really done differently in the last 6-12 to be really honest. Maybe "AI" will save the Metaverse is about all I've heard?

There's nothing much else going on social media wise so it will be a safe bet, but why should it maintain that price forever ?
> but why doesn't that also affect jet aeroplanes?

Jet engines pull in air and expel it out the back, creating thrust. The energy to do so comes from fuel, but almost all of the reaction mass is air.

Rockets don't have this luxury; they must bring all the reaction mass with them. This causes a big problem of diminishing returns. Adding more fuel means you can burn longer, but also makes the rocket heavier so it doesn't accelerate as much with the same thrust.

The result is that the fuel required goes up exponentially with the desired delta-v, as expressed by the rocket equation .
You can't simultaneously have that key strength is maintained as long as they don't know how many bits are flipped, or where in memory the key was, but also that leaking any number of bits is catastrophic. If your memory dump creates a different distribution on the space of possible keys, it has already compromised the cryptographic security of the key, it's just a question of how much, and the answer here is a lot - even if we had GBs of garbage data, that is still tiny compared to the whole space and can be sifted extremely quickly
To add to that, Chernobyl disaster and the subsequent coverup attempt clearly showed that Glasnost lacked actual substance. It was the one of the main reasons behind lifting the censorship regime (since the 1987 the press was essentially free to write about anything, and did so), and a major contributor to allowing competing factions inside the party. Nemtsov in particular became a prominent figure after his Chernobyl-related activism.

However, claiming that environmentalists took down the whole Union is downright silly. Yes, the fears of the crumbling infra and coverups, Chernobyl nuclear disaster, Spitak earthquake, and Ufa train disaster dominated the media of the late USSR (and especially Armenia, due to the Spitak earthquake), but that was only a small factor, the reasons were much more fundamental.
openapi and other yaml spec files can grow in size and complexity fast. Not sure if Pkl solves this but the problem exists for sure.
I suspect that a thousand well-linked notes are less effective in clarifying your thoughts than synthesizing five points into a coherent and well-argued article or essay.

Notes are helpful in preparation, but I‘ve grown a bit disillusioned about their inherent, standalone value. Especially when I think about „publishing my vault“ or something like that.
> Not if someone paid me to do it. That's the point. If there was money in hauling ACs around the US and running them on the cheapest electricity the local market could provide, we'd have exactly the same false economy.

How is such a purely hypothetical scenario useful as an argument?

It's like saying: "If nobody ever did physical harm to anybody, we could get rid of some part of law enforcement." Not useful because it's simply not the case and very likely never will be.

> They also appear to be sufficiently profitable on "retiring coal plant" prices[1], which undermines any kind of unique incentivization of renewals argument.

Bitcoin mining incentivizes any kind of generation that cannot be consumed by a more profitable process or use case.
If the price of electricity on a mostly fossil powered grid is low enough, then Bitcoin mining will be profitable.
Same goes for a mostly renewables powered grid.

There are two ways, politics can handle this:

A) Impose a high enough carbon tax on fossil generation. This will lead to higher electricity prices for the fossil grid, possibly making Bitcoin mining unprofitable. But it will also make other uses of electricity unviable.

B) Regulate that Bitcoin mining is prohibited under certain conditions (location, grid generation mix, ...)

B doesn't appear wise to me. Since it's highly subjective what kind of energy/electricity use one deems useful/legitimate. I personally find the use of a > 100 horsepower private car or a private jet totally illegitimate and would welcome regulation that drastically hinders these absurd uses of energy.
Do you use Chrome (on non iOS platforms) or Android? Both are made in Skia, and I don't just mean they can render Skia apps like Flutter apps, I mean that literally the system views themselves are all in Skia. Native Android apps that aren't in Flutter are also rendered via Skia.
The PlayStation also had an effect. The Amiga was easier to use than MS-DOS (or even Windows 95) in a console kind of way (just put in the disk you want to play and turn it on).

I remember a couple of kids at school going from Amiga to PlayStation because of the hype around that at the time.
The Zig compiler bundles the SDKs of supported targets while Clang does not, so you can cross compile out of the box without any extra steps. It also defines targets for various GLIBC versions which AFAICT Clang does not.
If you reveal you have broken sha-256, then your bug bounty becomes worthless. The smart move is to steal and drain a few wallets slowly.

And that's exactly what we see - and every time it happens, the bitcoin community just laughs that someone must have been bad at key management or used a weak random number generator.
This is already possible in 1.0

https://www.reddit.com/r/VisionPro/comments/1ai37t7/working_...
I was replying with a flippant joke to what I took to be a flippant remark/joke about the windows pointer not being "perfect" like Apple's pointer supposedly is.

The fact the post I replied to garnered no similar criticism to my flippant remark shows more about the culture on HN than anything else. That seemingly being: critise everything but Apple, Apple is off limits unless you're hear to fawn over them. This is currently playing out on my karma.

I've made similar flippant remarks/jokes about Google, Microsoft, Meta with no repucussions but god forbid I level some critism at apple!
This does seem odd. Is this information available somewhere to verify?
Maybe now, but it hasn't always been so. Attitudes change. If you're lucky enough to chat with someone in their 90s about dying, you may hear stories of how doctors used to "help people on their way". In other words, casual euthanasia was quietly accepted and expected.

Not quite what GP is describing, but it illustrates the point.
ISTR somewhere someone saying that moving it to the pack would break their really low latency processing requirements. Distance / latency options are fundamentally limited by the speed of light.
That is the problem nowadays, it feels like ASP.NET/Azure is driving .NET roadmap.
Money transfer, or any non-revocable transaction for that matter, should require multiple sign-offs (a.k.a "two/X to sign"). Businesses have been using this for decades.

This problem isn't a technical one..it's a process issue. One person shouldn't be able to transfer $25m without multiple people authenticating and authorising.
> you are building something new which will handle mains voltage, using the cheapest parts you can find on AliExpress

This seems like an invented argument.

Many relays you find on amazon and similar marketplaces are CE or likewise rated.

Add a quick blow fuse to the circuit if you are skeptical of the thresholds.

I would also say if you sat through a primary school science curriculum, it doesn't take a "loooot of research" to understand the basics of residential electricity. Fifteen year old students learn it in vocational technology courses.