skysight-inc/HackerNews huggingface dataset:
> models of decoherence assume existence of an external bath resembling classical state

They don't assume it's classical. They assume it's a system with lots of states and interactions, because if you want to have a model of "the external universe" then you have to have some kind of concept of what that looks like.

> In universe-as-a-wave-function there is no external bath. The system as whole is always coherent and is described by a single wave function.

Sure; the point is that if you split the universe into "these two entangled particles" and "the rest of the universe", because you want to understand how we observe that entanglement "decaying" as the particles interact with the rest of the universe, then you can model that as "these two entangled particles" interacting with "a thermal bath".

> The trouble is that so far nobody came up with a model where such temporary approximately classical subsystem appears.

This is nonsense? Wavefunctions generally have a lot of structure and decomposing them into smaller subsystems and functions happens all the time.
Perhaps focus in a given area/subject.
And that should result in the roads / intersections being redesigned to make them safer.
If Sweden pays $115/day then it comes about $575/week. And if US pays $145/week how it is 30% more than Sweden?
Oh, he was very well known in USSR / Russia in the late 80s / early 90s. My friend was a DJ on a radio station back then, and she once played his music for an entire night -- and got a call from a listener who thanked her and said that it changed his life.

As for his present-day popularity among younger people, it isn't as high as that of, for example, Queen or Pink Floyd -- though I had a ride with a young Uber driver who was entranced with Les Chants Magnétiques that we heard playing on the car radio.

And as for me personally, I currently have three of his songs in my Spotify favorites.
Please. If you want to make this particular argument you'd be better off doing it for Opel than VW.
I've been pretty clear in my past comments that my theory is that SBF is a cut-out for an agency-led money laundering operation. FTX was mostly wash trades and absolutely did not have 1 million customers. I don't even believe there are any major victims of fraud, nevermind the claimed 1 million people who lost "$8 billion." Of note, the DOJ has asked to seal the records documenting the victims.

The entire exchange, from setup to collapse, was engineered as an intelligence gathering and money laundering operation. Next, it will be used as an excuse to pass crypto legislation and clear the way for CDBCs managed by the Fed and its Wall Street banking cartel.
Security reasons related to handling money, put vaguely. It's not a terrible reason, but I was still grumpy using that machine.

Some companies are just "that's the standard and what everyone uses and that's just the way things are" and they aren't great places to work.
point 3 is some nitpicky claim about Fatal familial insomnia.

I don't find it to be egregious
Most GPS and Map Apps have audible notices. Mine speaks up if there is debris or an accident ahead and it is not intrusive or wildly distracting.

For as long as these kinds of navigation utilities have been around, it seems like the implementation of non-intrusive or at the very least not-overly-distracting notifications have been figured out by the industry.
I would think the point was obvious, the implication of the text is that in finding 5 errors in 4% of the book it can be assumed that there are 125 errors of equivalent severity in the rest of the book.

The assumption is that errors in written work are evenly distributed (which is such a ridiculous assumption that I have a hard time not being dismissive) Otherwise there would be an evident concern that they cherry-picked a part of the book that had more egregious errors than other parts.
There’s work before and after the flight that isn’t included in that 100 hours.
Big-O matters, but it's often memory that's killing your performance
Can you list some of the solutions that are out there now? I'm considering using one of them so I can have preview environments!
Why that particular set of closely-related mammalian temperatures than (say) 25 degrees Celsius or 50 degrees Celsius, I wonder?
Thanks for checking it out, and the helpful feedback. I'll fix it.

There's a few motivations.
One was me noticing how I'd somehow just accumulated stuff over time, and I've seen the longer term result of that with my parents. So I wanted to be on top of what I'm getting and why, how long I'm using it for and also how I'm disposing of it.

A second motivation is to use others' lists to make more considered decisions.

And thirdly I'm curious to figure out what might be the minimal set of things one needs to live comfortably.

And cheers, I'm working on an update to Synced which I think will be quite cool! (coming in the next couple of months).

[edit: fixed password issue]
>There is another class of developers who like to code so much, that 'work' is merely a project that they don't have directional control over, but the act of coding is a relaxing activity.

I'm in the middle. Imagine you like playing football. You do it for fun. But, if you do it too much, you'll be exhausted and maybe strain a muscle or something. I code for fun, but it still wears me out; it's still a kind of "work" psychologically distinct from, and more taxing than, watching a show.

The only way I would describe it as "relaxing" is if I put little-to-no thought into it, but that's how you end up with very buggy code.
I would be very interested in a post mortem of the software used called SkySolver. Its supposed to be a Java Application which is said to be developed by Accenture? Anyone have actual technical insights into why it failed?
There's nothing problematic with the criticism. The book is riddled with false claims and what's actually problematic is that someone sold countless of copies of fraudulent self-help on a contentious topic like sleep because they knew exactly it would sell like hotcakes regardless of its scientific accuracy.

You're right that it's excatly like nutrition advice or politics in that there's a 80%+ chance whenever someone sells a hugely popular book in this field that most of it is just made the f*** up.

Other sleep experts have asserted that the book is so awful as to constitute research misconduct and what we should do is give posts correcting bad science the attention they deserve and hold shoddy scientists and public intellectuals accountable.
Okay, I didnt thought about such an early state.
In a city you'd deploy them on the corner of every street and alley. Do you deploy them in the same density through rural and country areas?

Do you plan to also change fire regulations to call for an even distribution of sprinklers? Presumably you don't want to die from fire-bias either...
Thank 'em.
There are refrigerators that run directly off of propane. https://www.ferrellgas.com/tank-talk/blog-articles/how-propa...

The working temperatures of ammonia are probably wrong for a heat pump, but perhaps something similar could be devised.
I once interviewed at a company for a job that was pretty much a dream job - very niche passion. Everyone there was very into that niche.

Except for the CEO, who prided himself on not knowing anything about the field. He saw not knowing the niche as a perk; he'd focus on the "business side" only, leaving the rest to everyone else.

Got the offer, turned it down because of that.
I went to a Four Star store just once, to trade in a dying Kindle. The customer service was incredible, and the trade-in was actually better than promised online. I was sad to see them close.
My use case is similar. The oil furnace feeds hot water into a network of radiators. My design goal is to maximize the electricity outage that we can make it thru without frozen pipes, and it has to be on a budget (so no generator or giant UPS).

The house is mostly unoccupied (a second home). Operation in an outage has to be fully automatic - it needs an automatic transfer switch I guess. The typical indoor temperature is just 5.5C (42F) - this does not leave much margin for the house to cool down during an outage when outside is like -5C (or -10 or -20).

But it turn out that an oil pump and a water circulation pump do not draw THAT much power, so if I can run them off backup power (say, a new car battery plus an inverter), it should last for some time before ice has any chance to form.
B&N used to have this. It was also one of the most shoplifted sections people would steal from. The books were expensive and certain ones could always be easily flipped online.
Can you explain why? What relevance does his wife's stay at home work have to someone else trying to get tenure? Do you think he doesn't appreciate his wife and that rubs you the wrong way?
Some of that liking what you do can also be attributed to chance in the career path one stumbles upon. I’ve had programming gigs that I loved and gigs that turned out, after slowly boiling like a frog in a pan, were disfunctional and skill eroding.
My mother died of dementia.

Let me tell you, it doesn’t get easier and it doesn’t get better. It only gets worse every day. Be prepared for an absolute shitshow. Dementia isn’t just forgetting stuff. It’s progressive brain damage that leads to things like them not being able to care for themselves, becoming incontinent and being unable to swallow. The financial situation is the least of your worries but also the greatest of your worries because there are no facilities that are affordable that let your dad live his last years of his life with dignity. If you haven’t already I suggest reading up on it and the effects that dementia had on their caretakers.

Are you the only one available to take care of him? Does he not have family around him to take care of him? He will not be able to survive on his own in a few years, if not already.

You need to get power of attorney over his finances. That means you control everything. Depending on where he is at, and what you can afford, he will need to be in medical care in a few years. It can either be in a memory facility with full care which is very expensive, or you can try taking care of him yourself but you will still need to hire a nurse to bathe him as he becomes incontinent, or brush his teeth, etc. If where you live has universal health care like Canada, you’ll find that it’s really not helpful and your own cheaper options are basically mental institutions that are horrible. But the waitlist is years long so you need to be prepared for this.

My absolute condolences to you, your dad and your family. Dementia is the cruelest diseases. If I find myself going down this path I will definitely commit suicide to relieve the burden from my family. In Canada they won’t let you end your life with medical assistance if you have dementia which is governmental stupidity to the extreme. If anything people with dementia need that option more than anyone because it will never get better.
Hi HN! I've been playing around with ChatGPT a bunch since it came out. This experiment has a little bit of a backstory. Some friends and I were out at a pho restaurant; one of us put the whole bill on his card, so the rest of us needed to figure out how much to Venmo him. We were talking about how many bill-splitting apps there are, and I made a joke about doing it with ChatGPT. Then I actually tried it out.

I OCR'd the text with Google Lens, described who had what, and after a bit of prompt engineering (e.g., adding "Be sure to get your math correct" to make the AI's arithmetic check out, and convincing the AI to split shared items evenly), it totally worked: https://gist.github.com/spinda/967322dda1c04d9864f3efd45addc...

Then I started experimenting with describing a hypothetical check-splitting app to the AI, and asking it to feed me JSON commands to update the UI in response to messages from me telling it what the user was doing. The results were promising! And then the similarity to the Redux data loop jumped out, and I built this generic plugin to wire ChatGPT up to apps for real.
$100? $50? Who is to say. Stop loss orders may well accelerate the drop if that should happen. And the lower it goes the more they will have to sell to keep up! That feedback loop could get quite interesting soon.
That's how I've always viewed it as well. Used to be a very large CME (consistently meets expectations) which included people from those who were struggling, but not enough to warrant official intervention in the form of a PIP (performance improvement program) or NI (needs improvement) rating, all the way up to those who are actually doing a solid job, but in an extremely average way. Kinda like a "gentleman's C", where you really should be getting D's, all the way up to maybe a C+. I think the idea is with a much narrower "pack your bags" type rating for those really in trouble, and a decent sized "you need a kick in the pants to get your act together" bucket, you'll be able to actually help more folks perform better.

I can see how making the "you're in danger of being fired" rating more explicit, combined with expected distributions (which we've been told are not enforced, but rather a sanity check, and only expected with orgs of a large enough size) of ratings, might look like you've designed a system to make it easier to lay people off, though. But this is assuming that it's all an elaborate smokescreen to make layoffs possible, when in reality if Google leadership decided to, they could absolutely lay people off. This new system has been in the works for the better part of a decade at Verily and X, it's not a reaction to the current economic system. I think honestly it's just that nobody knows how to do this stuff well, and people in HR are motivated to make changes to show that they're doing something and aren't just playing on their phones all day.
Nullability on timestamp only implies that the timestamp is optional that's all. It doesn't imply that the timestamp decides the state of the entity.
At a higher level you could model a danger/anxiety/rage level for a segment of road taking in lots of signals like crashes, sudden stops, swerving, honking, speeding, etc.

Then you could offer an "avoid shit drivers" route option.
Have you told this person what they’re doing bothers you and asked them to stop? If you haven’t, then you are partially to blame for not speaking up for yourself. Good opportunity for you to learn how to tactfully set boundaries with people.
It would be nice if there was an option to avoid uncontrolled lefts on busy intersections in general, aka "UPS mode" which supposedly UPS does: https://hbr.org/2014/04/ever-notice-that-ups-trucks-rarely-m...
My wife's best friend in the Navy was in that exact situation. THe Navy luckily approved her request for a breast reduction surgery. But she was an H-cup prior to pregnancy. Her and her husband decided to have a kid, she got pregnant, breasts grew more and listening to her and my wife talk about it, I really felt for her. It sounds really painful. And it is also expensive when breasts are that large and you have to go to specialty boutiques.
> there are no scientific studies

If this treatment could be turned into a drug that had billions of dollars in revenue, as some arthritis drugs have, then there would be endless studies.

Sadly, that's not the world we live in.

"Lack of studies" in many cases is code for "there's no money to be made here."

This is too bad, because many extremely effective and effectively free treatments are ignored by scientists because they can't fund the research.
>a sleep scientist at Google

A scientist of what at where?!
I agree. You can start with https://threejs.org/ to get things rolling.
A great oxymoron to Google if you’re American is the “safety corridors” in your area. That’s the term for highway stretches that have a lot of fatalities.

They’re often indicated on highway signage, which I hate because you’d never intuit the meaning.
Once upon a time when I was really really green we had this little lab datacenter, just a room full of machines, and the lab manager guy, crazy dude that I was a bit afraid of, handed me his pager for the weekend, I guess he had to be gone. I didn't really get this whole on-call thing back then, and so I shoved it into backpack and forgot about it. Well, there was a windstorm, so Sunday evening I check it, and there is a sequence of 24 messages from the UPS "power lost, shutting down server X#", with a gap of a few hours, then 23 messages from UPS "power reappeared, booting up server X#". As I said, I didn't really get this whole on-call thing so I ignored it until Monday when I manually booted server X24. Nobody noticed. Glad it wasn't that important...
This is endemic to the whole world now, which has supply chains stretched across the globe in a just in time inventory system.

Some economist should figure out what percentage of our productivity gains weren't really productivity gains at all, but rather risk acceptance.

E.g. if we are currently producing 1000 units per year, then a new plan in which we produce 1010 units 95% of the time, 1000 units 4.9% of the time, and then 1% of the time we'll produce only 400. And just as people do price comparisons of unreliable electricity generation to reliable generation without taking the reliability into account, the various executives that signed off on this assumed (correctly) that the public would see a gain and give them the appropriate bonuses. Wall Street did a similar thing during the Great Financial Crisis.

This type of analysis has already been done by Dean Baker for productivity gains due to trade deficits[1] - e.g. instead of building an iPhone, we just design the iPhone, and then call up China and ask "make us 100 million of these", and because the designers can capture so much value of the finished phone, it appears like an explosion of labor productivity. But it's all contingent on having good terms of trade and strong IP enforcement. If these were to decline, we'd capture much less value and suddenly the productivity of those designers would plummet, even though they are still doing the same work per unit of time, because productivity is measured in terms of value creation. So it could well be that on an apples to apples comparison, total productivity growth in the US from 2000 to 2020 has been flat or negative, and we've merely hidden the losses elsewhere, for example in unexpected outages, labor force problems, or periods of rapidly rising prices (revaluations).

[1] https://www.cepr.net/documents/publications/productivity_200...
Oh! https://ericlippert.com/ now has 5 "Retrospective" posts up about https://beanmachine.org/ . Hmm, but no easy way to link to the set ("Uncategorized").
A C# redis lib. For just the basic set/setex/del/exist and an auth layer and proper retry logic both the StackExchange and the (try-than-buy with command limit!) Other popular lib, I just made my single-file driver instead. I didnt need clustering and async. Much better and something I can trust, as well as much less code, so less error prone.
Capitalism is more than a bit unfair. Having the most stake in PayPal because he merged a different entity with its parent company while being lucky enough to be fired before he could ruin the company doesn’t seem like it deserves positive recognition.
If all goes well, looks like it'll be shipping enabled by default in Chrome M113 (scheduled to go out at the beginning of May).

https://groups.google.com/a/chromium.org/g/blink-dev/c/VomzP...
Anecdotal but over the past 20 years I've held about eight different positions in various companies as a software engineer, and I've never even so much as glanced at leetcode. I've been able to live comfortably and put plenty away for the future with 150 to 200K salary.

I feel like companies that emphasize interviews prioritizing rote memorization aren't going to be a good culture fit for me anyway.
Rust has a unique experience. Initially you hate it, right up to the point where you grok it, then you love it because you realize it save you from so many boneheaded errors that C/C++ allow you to do easily. You can still do them in Rust, but you can't do them unintentionally (generally). The borrow checker, the forced composition over inheritance, and the trait mechanisms are major wins.
Storage is only around 250gb on B2, significantly larger on device. Egress/other averages out fairly minimal, mainly class b transactions.

https://help.backblaze.com/hc/en-us/articles/217667478-Under...
They have the phone numbers now that they have the sims. All of those can be read out and used to deactivate any accounts where the phone number was used to verify the account, and those accounts together can then be used to train a discriminator to spot other such bot farms. The catch rate should jump up considerably.
Similar to humans, is there a wait time [cooling time] for aircrafts also? I suspect before and after each takeoff and landing, there are bunch of tests run to verify proper function of aircraft parts and subsystems.
Cheap new bridge, anyone?

That won't happen without a lot of painful changes in policies in the meantime.
FWIW there does seem to be a certain blind spot about PEX as an alternative in the US.

A friend redid his whole house with it himself to great success. He mentioned one of the contractors he got a bid from while deciding his plan, when asked about PEX, said "Well that just saves you time and money" in tone of dismissal.

I think there's something similar going on with ductless heat pumps in the US. They're a fantastic option in my area but still uncommon. Part of that seems to be the installers make more from other options.

I very much agree with you about the tendency of HN's community to assume other industries are simply obvious idiots, rather than realizing they're just ignorant of that industry's reality.
> Freedom includes doing things that others don't like --- and tolerating the opposite too.

So I should tolerate people driving on public streets without insurance and without a license? I should tolerate people driving the wrong way on the highway? I should tolerate whatever emissions come from the tailpipe of someone's car? I should tolerate sompeone driving a car that nobody has touched the brakes on for a decade and they're about ready to fail at any moment? I should tolerate people driving at night without headlights on? I should tolerate people driving at any blood alcohol level?

All of these are laws which limit freedom in the name of safety. You're arguing you'd prefer freedom over safety. Personally, I prefer all of these tradeoffs of freedom over safety, at least when driving on public streets. If you don't like these regulations, don't drive on public streets.

Requiring a driver's license, having emissions controls, creating traffic standards for driving on public streets are examples authoritarian socialist dystopia I guess.
Reminds me of "Sanitary Sewer".
Good thing then that Why We Sleep was hyped by always reliable and accurate New York Times, so we know we can trust it:

https://www.nytimes.com/2017/10/10/books/review/snooze-micha...

I mean, this Mathew Walker guy has been thoroughly vetted for accuracy by the diligent fact checkers from places known for integrity, like CNN

https://amp.cnn.com/cnn/videos/tv/2020/10/15/matthew-walker-...

or NPR

https://www.npr.org/2017/10/16/558152847/why-we-sleep

More seriously, though, of course it’s true that smart and confident sounding people are going to dupe Joe Rogan. He doesn’t even pretend to be any sort of intellectual or rational truth-seeker. It is more concerning that such lousy kind of “expertise” as exhibited by Dr. Matthew Walker is more than good enough to dupe mainstream media organizations as well, but to anyone paying attention, this should not come as any sort of surprise: public trust in experts has been in free fall for more than a decade, and really accelerated in last 3 years. The thing you should ponder about, which you won’t, is that your first instinct here is to slander your ideological opponents, using slurs like “tech bros”.