skysight-inc/HackerNews huggingface dataset:
Ask HN: Is Facebook deleting things they say they do?
Just realized facebook added an unsend feature for messenger that no longer requires a 10 minute deadline. They do say unsent messages can be reported up to 14 days after being unsent, but do they delete after this time or does it just hang around their servers until someone inadvertently hacks them. This has previously been an issue around a year ago, where Instagram was reported to not have deleted "deleted messages and photos" from their servers for over a year.

At this point the only thing keeping me from deleting my facebook is that I want to purge everything, including messages but wondering if it's just a wink wink we'll be deleting them not really, kind of deal. Are there any GDPR rights that let me check if they do?
When you push the 'brakes' on the an electric (or even hybrid) you simply engage the electric motor. There is a limit to how strong this form of braking can be so in certain cases you will need emergency brakes (disks or otherwise). So the brakes on an electric vehicle would be very different. I would guess in the future they wont even exist. It will just be the motors. Motors to wheels so no drive train either.
Would that extra cell be used unless there is a need for it? If there is a need for it, then I assume it will be a need for it when you fill the drive too.

But yeah, it depends on the manufacturer of the drive, so you don't want to take the chance, Full encryption is unbeatable.
Do you think they are expensive because new and not manufactured at scale, or because titanium/titanate is expensive ? I know that Toshiba manufactures these and apparently it was in talk with Apple to contract manufacture it for them.
Can we heal the Republican Party?

They're trying to kill us all.
That's fair. But the general consensus among media and government agencies has been that the rate of fraud (and not just the overall amount of fraud) is higher. ie: in Maryland

> According to the Maryland Department of Labor, as of July 13, 1,443,211 or 92.31 percent of all out-of-state and in-state claims were confirmed as fraudulent.

https://www.wmar2news.com/unemploymentguide/several-arrests-...
I'm very much a xennial, but in fact, did not ask out my first date over the phone. We used a BBS like all the kids are still doing. Right? Dammit, I'm old
I'm more optimistic. I think it's going to work if simply because the ban on advertisement for tutoring.

Advertisement works and it opens up new market segments that previously are not interested in these things, and in a resource constrained environment (as in the admissions are more or less constant), it forces everyone to act. That and the almost complete bulldozing of the current tutoring infrastructure are going to leave that space blank for a good while - hopefully to some better childhoods at least in the near terms.

It's never about changing it for everyone, if it works on enough families, most families, or even some families, that were previously going to impose that insane tutoring on their kids, then it's worked in the right direction.

Personally, I think this obsession is illogical, a better major is a far better indicator of success than the differences in college a few points of Gaokao are going to make.
> I'd expect any paper doing the same to refer to it, as well as explain how the work in the paper differs from or expands on it.

But they do:

> The strength of the present approach is simplicity, there
is no need for higher dimensions, torsion tensors, asymmetric metrics or the like.

(emphasis mine)

> The fact that the metric proposed in the paper corresponds to the term added to the 4D spacetime part of the Kaluza-Klein metric is already suspicious.

Why? There aren't many ways to write down a symmetric 2-tensor starting with a vector field.

> It makes me think they're either repeating Kaluza and Klein's work, or aren't properly citing it when they should have.

They're doing neither. Sure, they might have mentioned Kaluza's work more explicitly (AFAIK Klein's contribution was the suggestion to compatify the 5th dimension) but I suppose 1) they assumed that readers are familiar with it and 2) they wanted to mention several approaches to marry GR and ED and Kaluza's approach was just one of them.
Why did it take nine days for this to make it to hn front page, dang?

I am starting to believe in self termination as a viable strategy to exit a farcical reality. Boobs and US Marshal's, after all.
The Twitter dramas will still be apocalyptic. Hate will appear to spread but most real people won't care. Some will get excited enough to break things. Others will stand by and do nothing. More will at least notice.

There will be scandals over some of the big tech. Some more revelations around privacy. Government interference etc.

Vaccinations will do their thing. Another strain will appear.

China will continue stirring the pot and there will be a realisation about how deep their influence inside US tech and science really is. The US will gain fresh new but old opinions as they realise that oil is the least of their worries.

Water/food will become more noticeable as something worth fighting for.

And there will be a rock that will raise a lot of drama.

Other than that, people will complain about some show involving a man cheating on some woman while she is secretly cheating on him.
I don't think it's a superficial interpretation at all. CCP (or Xi JingPing) won't make a stability-destroying change like this just for the sensability (because they would have done it years ago). CCP do things like this to survive, because they fear losing the mandate of the heavens, and get overthrown. How do you lose mandate of the heavens? If economy is bad. Why is the economy bad? Because democracies around the world are now uniting against the CCP. Because by 2040, 1/3 of China's population will be over 60 and out of the workforce. Who's gonna fill up that workforce? Not the kids if there are 20-30% less kids.

Incidently, the CCP is so afraid of losing the mandate of the heavens recently, that the recent flooding in Henan, which killed thousands https://www.reddit.com/r/China/comments/opz2gt/chinese_polic..., wasn't even reported on the front page by Henan newspaper!! https://www.reddit.com/r/China/comments/oqvum2/todays_front_...
I think it helps a lot to find someone who often wants to do the same thing as you.
As a German, and I'm probably also speaking for Russians and Chinese here, I'm quite puzzled by this.

We consume more than one kind of mustard, one of them being aptly called "Süßer Senf" - sweet mustard[1], which is pretty far from your ordinary mustard in every way. It isn't hot at all, mostly sweet. You wouldn't use it instead of regular mustard (or vice-versa).

There's just no way "German mustard" is referring to anything specific enough to start making such comparisons. You'd have to narrow it down to regions of Germany to get anywhere, such as a Bavaria, the origin of sweet mustard.

[1]: This likely being the most popular brand https://en.wikipedia.org/wiki/H%C3%A4ndlmaier
I have heard that large contracts on LFP batteries have touched under 100$/kwh in China, but on the retail side i have never seen anything cheaper than 300$/kwh ever sold. I guess even touching something like 200$/kwh retail is a big deal and might happen sooner than later with the flood of battery makers coming in.
It feels like you meant this sarcastically, but actually that would be pretty great.
> > You could do the same thing with Lithium Ion, it would just be cost prohibitive... 10x as expensive, supposedly.

> Lithium ion can do ‘100 hours’ as well

Did you reply to the wrong person? I already addressed your entire comment several different ways in my original comment, and you didn't address anything I wrote in mine, as far as I can tell. Maybe I'm not the best at explaining things?

> 100 hours... of what?

Cost effective energy storage solutions that can discharge for 100 hours at maximum operating output. "Cost effective" is absolutely the key factor. Lithium ion is not currently cost effective at such durations. It is cost effective at about 4 hours, but some sources will say anywhere from 2 to 8 hours.

If you aren't familiar with a particular industry, it's perfectly logical for that industry's shorthand to sound like total nonsense. You (and most of HN) are not the target audience for a statement like "100 hour battery". Grid scale energy storage operators are the target audience, and they understand what that means. It means slow batteries, which also implies cheap, because no one would buy slower battery technology if it weren't a lot cheaper. Form Energy explicitly declares the technology to be 10x cheaper. We'll see if that holds up in reality.

Someone unfamiliar with computer science who overhears a conversation about "garbage collection" would likely be very confused. "Computers don't emit garbage! RAM is reusable, how could bytes of RAM become garbage?" But, obviously garbage collection is a real thing with computers, even if it sounds like nonsense to someone outside the industry who just knows enough to know what RAM is.

Here's an article[0] that talks about long duration energy storage, and they even mention Form Energy. Relevant quote from the article:

> Lithium-ion batteries have absolutely dominated new storage construction in recent years. But they rarely can deliver their full power capacity for more than four hours — that’s what people mean when they say “discharge duration.” Batteries technically can go for longer, but it generally costs more than it’s worth in today’s market dynamics.

One more choice quote:

> Batteries cannot yet compete with gas plants in providing prolonged power for multiple days. But a cost-effective 24-hour duration storage system could handle longer demand peaks, and a 48-hour system could do even more.

It's all about cost effectiveness.

[0]: https://www.greentechmedia.com/articles/read/so-what-exactly...
>Blake Hall, CEO of ID.me, a service that tries to prevent this kind of fraud, tells Axios that America has lost more than $400 billion to fraudulent claims. As much as 50% of all unemployment monies might have been stolen, he says.

Are there people without an obvious conflict of interest saying this, too?

Lazy reporting, imo. I don't doubt there's a real fraud issue, but basing a headline on one guy's "might have been" figure when that same guy stands to gain financially from saying it... yikes
Twitter does the same thing -- they show "top" tweets by default now, rather than latest.

Don't even get me started on their adoption of the mobile UI for desktop...
I feel that. I realized the same. But my view was...if people couldn't be bothered to reach out to me if it wasn't plastered in their face, were they really important in the first place? To me obviously, no, so I didn't rejoin.

Secondly, the system will only break down with people leaving. Once your friends are gone, whats the point. Just being the first in your friend or family group is really tough.

The worst part is there's no viable replacement outside of what, MMS group chats?
>To a layperson this sounds like a hack. "Things get screwy when you screw with them, UNLESSSSS we add a magic thing that undoes our work". Well yeah.

What you describe as a "hack" is actually the empirical (look/probe and see what happens) nature of physics as a science.

It seems like a hack because there's no a priori theoritical reason to do it. But physics is not based on verifying empirically a set of a priori rules (who would give them?), but by building theories and rules by empirically looking at things at seeing what model fits, and if a changed model fits better - we then verify those empirically with more experiments.

And this is not "Things get screwy when you screw with them, UNLESSSSS we add a magic thing that undoes our work", but more like a reverse engineering session:

"Behavior X appears to be described by this formula with parameter p. What if we changed the parameter to -p? Hmm, the results would still be consistent with X, if only there was an additional factor v in the formula.

Would this (-p,v) combo buy us anything over our previous (p)?

Wow, yeah, v would then perfectly match the behavior we see for this other thing Y too. So (-p, v) seems to describe both X and Y, whereas before with p we could only describe X.
I really doubt. It's just going to either go underground or use other names as a facade. New players, old story. The competition is still there.
Strange Idea: Perhaps Fusion Reactors have not only a possibility to be the future energy source for Earth -- but the additional possibility as a

future method for transmuting elements -- into other elements.

Put a little bit of Element X (which is not one of the main, energy-generating reactants) into the fusion mix -- get Element Y out of the mix, Z minutes later...

Of course, some of the future challenges to this would include: How to get Element Y, which is now 100 million degrees Celsius, out of the mix, and cool it down...

But, we'll leave those challenges to future Scientists! <g>

Currently, the five main branches of Chemistry are: physical, analytical, biochemical, organic, and inorganic.

Well why not a sixth, future one?

Why not -- (wait for it!) -- "Fusion Reactor Chemistry" <g>

?

You know, dealing with all kinds of elemental transmutation (and other Chemistry/Chemical Reaction related subjects!) -- that in the future become possible in Fusion Reactors...
It's not free, you have to agree to terms and conditions. You shouldn't have to agree to FB terms to learn about government services, like your garbage schedule. Could be a lawsuit here.
I don't think it should be legal for either the state or federal government to outsource such a sensitive and important function.
It would be interesting if squatting became legal in the USA, or at least just in your town.
If I recall correctly, sometimes there are laws that put a % cap on yearly rent increases.

They're intended to protect existing tenants, but they also discourage landlords from reducing rent if they think rents will come back up in the future faster than they're aloud to raise them.

So instead you get a one-off discount.
Modern ads focus on pathos and ethos. They want you to identify with a tribe/idea, they want you to feel something so you will be compelled to buy it. Look at some movie theatre car ads. They are all about "freedom" or "power" or "control".

For tech companies, Google product ads are always about a "smart and quirky" way of life, Apple is about privacy/connectivity/whatever the trend of day is. For Microsoft, it is productivity. For Facebook, bringing people together and empowerment.

Most of it is bull**** but it works much better than a raw summary of specifications.
First, just to clear this up: I am not an Android fanboy, and not an iOS hater. My wife has an iPhone and an iPad and they are great for her use case, and I have a lot of respect for the consistency of the experience on an iPhone. I reluctantly have an Android phone because it's the only thing out there that meets my needs at the moment, but I'm under no illusions as to its flaws.

On to the question of side loading: technically, Apple does provide a way to load code not from the app store. Some might call that side loading. However, when most people say that they want to be able to side load apps on their phone, they expect that their apps will function as first-class citizens. Apple's version of side loading is more like a very temporary work visa than a grant of citizenship, which makes it structurally different than what is being asked for.
Property of what?
I'd be happy if any other electric car maker could produce a single car.

Let's start there.
That code never made it into a release.
Second thought: Maybe it will work out, not because of the policies, but because the current generation that went through those arms race think it's enough and decide not to play the game a second time.
I've heard stuff before about the fact that conglomerates like Tencent make it hard for Chinese startups to get money. Is that true and potentially the larger factor?

Given that it's so easy to spend 3+ hours a day on internet entertainment, I find it logical that ad-driven social media is a productivity drain. However, are they simply addressing a symptom of why people get hooked to social media? What's stopping people from watching TV for 5+ hours a day like certain older, retired generations?
Not garbage. Images of the remnants of elite food.
From your comment I'm not sure if you're aware but there are two established standards that do just that:

ATA Secure Erase is an optional security feature implemented by many flash-based disk devices specifically because write degradation and overprovisioning preclude them from being wiped via overwrite as you would magnetic media.

More SSD disk controllers than you may realize have an AES encryption engine and persistent storage for the key. The controller is encrypting/decrypting on the fly transparent to the user/system. A secure erase simply rolls that key (and flags all the cells as empty).

As noted in the sibling comment, there must be trust in the device itself that the old key is unrecoverable (or the data recoverable if the prior key had been compromised).

hdparm on any linux liveusb (e.g. Clonezilla) and an eSATA dock and you can nuke a few disks a minute with two commands:

hdparm --user-master u --security-set-pass p /dev/sdX
hdparm --user-master u --security-erase-enhanced p /dev/sdX

hdparm has other arguments that can tell you if this is supported and how long the drive says it'll take to do it.

The other standard is TCG's OPAL. An AES media encryption key (MEK) is generated to encrypt/decrypt all data on the fly. The MEK is encrypted with a user-defined key encrypting key (KEK) and that encrypted MEK is stored on the drive. At boot the user (or some external process) needs to supply the drive with the KEK to decrypt the MEK and begin transparently decrypting/encrypting data on the fly. Splitting the disk into multiple "locking ranges" with independent MEKs and KEKs is also described in the spec enabling secure wipe of just a portion of the disk. Lose the KEK or destroy the MEK and the data is unrecoverable.

I'd say this option still requires trust in the disk itself but since TCG dictates not just the interface but also the implementation and has a corresponding certification process (as well as reliance on an off-device key), I reckon TCG OPAL devices should be more trusted than those that simply claim to implement the ATA Secure Erase command, but I haven't had an opportunity to test any.
Well, depend on how serious the directive is, snitching are going to be very useful.

Kids will figure that one out quick.
Your right. Sometimes its nice to give people a brake.
> If they made it cheaper per kWh then they should say that

They do say that. Quote from the article:

> at less than 1/10th the cost of lithium-ion

"100 hours" isn't an advantage for this technology. The advantage is the cost effectiveness. "100 hour battery" mostly means that it will take 100 hours to discharge one of these batteries (of any capacity) at the maximum discharge rate that the technology allows. Obviously that is a huge downside compared to lithium ion, which is able to respond to grid energy needs with much higher power density!

But it doesn't really matter, if the price is right. Long duration energy storage is all about lowering the cost per kWh by developing technologies that have lower power density in exchange for also lowering cost per kWh of storage. Lithium ion isn't cost effective for long duration storage right now.

Also, people in that industry know that surely no one would proudly advertise a "100 hour battery" if it weren't significantly cheaper than lithium ion on a per kWh basis, so the term "100 hour battery" also means (to the right audience) that the batteries have to be cheaper than lithium ion.

Whether Form Energy will succeed in their claims at scale is TBD. I hope they do well, because cheaper energy storage is immensely helpful for decarbonization of the grid.
How can the value of those buildings still increase in an otherwise deserted area. That doesn’t make any kind of sense.

Nobody in their right mind would start a shop there, much less for extortionate prices.
Allowing the buyers to remain anonymous is problematic.

The Ukranian no-skills job was suspicious, now allowing people to basically give the president's son gobs of money without being identified is beyond the pale.
Technically perhaps correct, but my HOA pays for garbage so it's more neighborhood level. I have zero interest in interacting with them much less suing them. I just wish they'd spend 10 dollars to setup some simple website, but don't care enough to go through the ranks to suggest that...
I think it's worth pointing out that Zuckerberg and Sandberg both knew this was the trend and that eventually Facebook.com would burnout, hence the acquisitions of Whatsapp, IG etc... to ensure that they would have long term relevancy.
1 study, foreign...falsity is nothing new here...in a recent HN article, it was shown that the majority of some foreign health studies were fake or seriously wrong...

Aside from that, ivermectin is a proven therapy for Sars related cases. There is no question, only political and media combat with physicians.
I met LeVar Burton at CES many years ago. It was like meeting one of my childhood heroes and I liked him very much. What a nice man.
Again that 92% could be true, but those are clams not money actually being handed out. That said, if under 8% of clams where legitimate then paying out 50% incorrectly might actually be accurate.
Robert Strange McNamara was a Republican. As were the cast of characters who were largely responsible for the disinformation campaign inside the pentagon that lead up to the Vietnam war: Team B.

Rumsfeld, Wolfowitz, Cheney, Seymour Weiss, etc. some of those names should be familiar for their continued subsequent enthusiastic support of obviously brain dead massively deadly clusterfucks.

https://en.m.wikipedia.org/wiki/Team_B

Just for good measure, let’s add watergate and iran contra too.

Didn’t Ollie North end up running the NRA for a hot minute? Classic carnie move.

Where is the GOP health care plan that Trump was promising was almost ready for years and years? Classic carnie move.
it also might be the sncr9aching dread of a climate catastrophy and the people in charge pandering to the worst types of people
The US State Department has you go into a post office to verify your identity when applying for a passport.

Nearly all credit cards have PKI chips in them at this point. US passports and US DoD ID cards do as well.

Most (all?) unemployment claims pass through a bank account; the bank is required to adhere to KYC laws.

Sensible solutions exist but for some reason we're outsourcing to a shady operator in the private sector instead.
That stackoverflow library is so gloriously bonkers. Is it useful in practice?
What I really dislike now about YouTube's algorithm is its insistence on showing short videos. I do not come to YouTube to watch 30 second videos. If I want to watch short videos I'd go to Instagram or Tiktok. Yet, no. I am bombarded with short videos.

I removed the videos from showing up on the home page with some CSS, so now I solely rely on related videos for non-subscription content. Those seem to be delivered based on engagement so they're usually longer. Unfortunately, half the time they're hour long videos.

Come on YouTube, just give me a 5-10 minute video.
Want to try ELI15?
> I just assumed most people weren’t living under a rock and were aware of the basic facts of COVID.

There is no need to indirectly insult me or other people on the thread.

I discussed with you in the hopes that I could learn something. You didn't reply to my specific comments in detail. If you were hoping to persuade or be kind, you missed an opportunity here.