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Re:Room-Temperature Superconductor Discovery Meets with Resi... by sigmoid10 on Wednesday March 08, 2023 @11:27AM (#35071001)
This is the same group that already had their publication retracted by Nature the last time they made such a claim. Maybe Nature's reviewers got better and this time it is legit, but I wouldn't count on that. So there's nothing to see here until this gets independently replicated. They totally deserve all the scrutiny and resistance they seem to be getting.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by m-watson on Wednesday March 08, 2023 @11:35AM (#35071127)
This write up of it [0] tries to address that a little but I agree that all the scrutiny is deserved and should continue.

"The previous paper has been resubmitted to Nature with new data that validates the earlier work, Dias says. The new data was collected outside the lab, at the Argonne and Brookhaven National Laboratories in front of an audience of scientists who saw the superconducting transition live. A similar approach has been taken with the new paper. "

[0] https://phys.org/news/2023-03-viable-superconducting-materia...

Re:Room-Temperature Superconductor Discovery Meets with Resi... by sigmoid10 on Wednesday March 08, 2023 @11:39AM (#35071192)
Oh, I want to believe. But I will do so only when those other groups publish their own results.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by scythe on Wednesday March 08, 2023 @12:26PM (#35071943)
The good news is that 1 GPa (10 kbar) is a lot easier to achieve than hundreds of GPa, which means that replication will be much easier. The previous "room temperature" claim involved around 2 Mbar or 200 GPa. For comparison, the detonation pressure of a high explosive is around 50 GPa. So, hopefully, this time, we won't have to wait as long.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by mannerheim on Wednesday March 08, 2023 @12:35PM (#35072057)
Only if one can get ahold of the material.

> However, outside access may fall short of the community’s hopes. Dias and Salamat have founded a startup, Unearthly Materials, which, Dias said, has already raised over $20 million in funding from investors including the CEOs of Spotify and OpenAI. They’ve also recently applied for a patent on the lutetium hydride material, which would deter them from mailing out samples. “We have clear, detailed instructions on how to make our samples,” Dias said. “We are not going to distribute this material, considering the proprietary nature of our processes and the intellectual property rights that exist.” He suggested that “certain methodologies and processes” are also off the table.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by kloch on Wednesday March 08, 2023 @03:18PM (#35074185)
This is exactly the kind of thing the patent system was intended to prevent. You have to share enough details of your secret sauce so others can replicate it, even if you intend to not license it or charge outrageous licensing fees. That way the knowledge is out there today, can be expanded on by other researchers/inventors, and at a specific date in the future anyone can use it.

It also helps reduce fraudulent claims of new discoveries.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by _a_a_a_ on Wednesday March 08, 2023 @01:29PM (#35072822)
I don't understand, and if you could illuminate it would be very helpful, how are such pressures achieved and maintained even for the shortest time without destroying the apparatus that holds it?
Re:Room-Temperature Superconductor Discovery Meets with Resi... by jjk166 on Wednesday March 08, 2023 @01:38PM (#35072967)
These are generally done with diamond anvils which concentrate force on an extremely small area.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by _a_a_a_ on Wednesday March 08, 2023 @01:52PM (#35073161)
I understand that but it sort of dodges the issue that such enormous pressures must exceed the strength of any material, however small that pressure is contained in.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by jjk166 on Wednesday March 08, 2023 @04:13PM (#35074803)
The compressive strength of typical diamond is about 470 GPa, so no this is very well within the strength of the material. The current record for highest compression achieved in a lab is 770 GPa using a special form of diamond.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by _a_a_a_ on Wednesday March 08, 2023 @05:52PM (#35075901)
Note to silent downvoters, this is what an answer looks like.

(Thanks jjk166)

Re:Room-Temperature Superconductor Discovery Meets with Resi... by scythe on Wednesday March 08, 2023 @02:07PM (#35073358)
Wikipedia provides a nice overview:

http://en.wikipedia.org/wiki/Diamond_anvil_cell

Contra the diagram, I don't believe the diamonds in a real anvil are faceted.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by crangos on Wednesday March 08, 2023 @04:28PM (#35074981)
According to the wikipedia article you link, they are usually faceted with 16 faces (under "Force Generating Device")
Re:Room-Temperature Superconductor Discovery Meets with Resi... by slackdog on Wednesday March 08, 2023 @11:51AM (#35071374)
Nature has a well known bias for papers with sensational titles.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by dekhn on Wednesday March 08, 2023 @12:23PM (#35071873)
I think this is working as intended. We often joke that if something is publishing in Nature it's almost certainly wrong.

But realistically, at any time in any field there are only a small number of people who are truly pushing the state of the art (I'm referring to discovery science, not reference science- IE, a focus on adding 1% additional knowledge to our already copious understandings. Any I think tthose people shouldn't have to follow the normal rules about scientific publishing: I want them to push the limits as much as possible. That means occasionally publishing something that contains a mistake (not a falsification), and then being willing to have it retracted (without consequence to future publication).

These sorts of fields tend to self-correct because somethign that's wrong isn't reproducible, and all these scientists are working to reproduce each other's results (note: both the people who thing Dias faked his results were going to take the new protocol home and attempt to repro it in their hands ASAP).

In a sense, it's being willing to accept a higher false positive/false negative rate so you don't filter out some true positives.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by feoren on Wednesday March 08, 2023 @12:26PM (#35071936)
> a handful of experts spotted unusual patterns in the data

> a year later ... they detailed an unusual and complicated method [for processing the data]

regarding which a team claims:

> [We] proved basically mathematically that the raw data are not measured in the laboratory; they are fabricated

So multiple different peers have pointed out multiple different times that this team is publishing "exactly the results you'd want to see to confirm superconductivity", and then a year later publishing fake-looking raw data or overly-complex "data processing" that magically gives them the exact result they needed to get published. These guys don't even seem particularly good at their fraud:

"We just made the most important discovery in the history of superconductivity!"

[Immediately]: Okay but what about all this bullshit here?

"Oh that? (nervous laughter) ha ha, well, see, the thing about that is ... [a year later] ... there, see, here's the raw data; we were just processing the data in a way we never mentioned before. We didn't tell you about it because, um, well, um, we ... forgot?"

[Immediately]: Okay but this raw data is obviously fake "Oh, well, um, psych! We were just kidding about that result! Ha ha ha, take-backsies. Um yeah, we take it back."

[A year later]

"Hey we did the result again! This time it's for real serious realsies. We have the result here. We did the result thing again. It's the exact same result but better this time. Guys?"

Why is anyone taking them seriously?

Lying in a professional context is basically never OK. If someone is shown to be lying, they should never work in that field again, nor any field that bestows upon them any sort of trust. Lying is a big deal; it should absolutely be career-killing. It's not something people just do once and then get over. A few weeks ago people on Hacker News were talking about how to help their children cheat at school, like it's just a normal thing. It absolutely blows my mind that this would be seen as OK.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by lisper on Wednesday March 08, 2023 @12:39PM (#35072115)
> A few weeks ago people on Hacker News were talking about how to help their children cheat at school, like it's just a normal thing.

Link?

Re:Room-Temperature Superconductor Discovery Meets with Resi... by lifeisstillgood on Wednesday March 08, 2023 @04:24PM (#35074927)
Yeah - like does it work? Is it costly ? do I need to sneak an iphone in ? What if the kids rat on me !

;-)

(sarcasm, of course).

Re:Room-Temperature Superconductor Discovery Meets with Resi... by feoren on Thursday March 09, 2023 @11:35AM (#35083143)
https://news.ycombinator.com/item?id=34869283

> I was helping my son with his homework. He had to write an essay about why the gender of the protagonist might be female (although this is never mentioned in the short story). Fortunately for him, ChatGPT knew the story and was happy to write an essay with arguments.

It goes on like that. The parent helps their son use ChatGPT to cheat at school, and the responses are all positive, like:

> I am delighted to hear that children are already adopting the new tech

And:

> This gives your son a competitive advantage over the kids who will simply turn up what the AI wrote (and get a 0) or spend too long writing their own essays.

They're celebrating it and talking about how learning to cheat well will give them a "competitive advantage" (zero-sum bullshit) over the kids who cheat badly, and then making a mockery of the children who actually "spend too long" doing the work themselves.

It's insane. It's bizzaro world. It's infuriating. They're teaching their children to grow up to be liars and cheaters. They're knowingly punishing the children who choose not to cheat. They sound like toxic psychopaths, which I got downvoted (obviously) for calling them.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by lisper on Thursday March 09, 2023 @11:44AM (#35083266)
> It's insane.

Sorry, but I don't agree. The form of this argument is indistinguishable to me from those who argued back in the 20th century that using calculators to do arithmetic was cheating.

Writing essays is on the same road as doing arithmetic by hand, calligraphy, blacksmithing, and buggy-whip manufacturing. All of these used to be useful skills but technology has displaced them. That's the reality, and no amount of railing at the wind will change that.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by hooverd on Friday March 10, 2023 @12:29PM (#35097752)
Is it cheating? No. Are these now plenty of people who are incapable of doing basic math without their phones? Yes. It'll be interesting to see what effects this has once everyone outsources their long form thinking and communication to their AI friend.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by dekhn on Wednesday March 08, 2023 @01:53PM (#35073181)
there isn't enough evidence to say they are lying compared to making a mistake. It is remarkably hard for many scientists to ensure that the presented "raw datA" isn't actually the output of a synthetic analysis. also, if the new work repros and is valid, it means that the original work may well have been right.

If it doesn't repro probably this guy's career is over.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by feoren on Thursday March 09, 2023 @11:29AM (#35083061)
> there isn't enough evidence to say they are lying compared to making a mistake

You're right, of course. I would not be jumping to conclusions if I had actual authority over the consideration of their work; I would be much more measured. But here in my armchair, I'm free to express my strong gut feeling that these guys are obvious liars -- but that's just, like, my opinion, man. This is one of those cases where I'd be very happy to be proven wrong.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by mrguyorama on Wednesday March 08, 2023 @04:45PM (#35075178)
Sounds a lot like what Jan Hendrik Schon did https://www.youtube.com/watch?v=nfDoml-Db64
Re:Room-Temperature Superconductor Discovery Meets with Resi... by kraussvonespy on Thursday March 09, 2023 @08:53AM (#35081131)
I tried to go through the "Room-temperature superconductivity — or not?" paper related to the "[We] proved basically mathematically that the raw data are not measured in the laboratory; they are fabricated" comment. I'll admit, the paper is well over my head. Long time no college science classes.

I'm curious about the methods used to determine that the data was fabricated though. Would someone mathier than me help answer this: Was the fabrication of data determined through a mathmatical analysis of the actual data numbers ala Benford's Law? Or was this determined more through a scientific analysis of the experiment that determined that the numbers weren't possible?

Re:Room-Temperature Superconductor Discovery Meets with Resi... by sigmoid10 on Thursday March 09, 2023 @02:26PM (#35085468)
Stuff like Benford's law or the central limit theorem are a trivial observations that anyone with some basic statistics knowledge could have called out. But that also means anyone who has some education in the field could easily falsify plots to avoid that, so you will not catch real physicists with those methods. The problems in the paper that was eventually retracted were only visible to experts who actually work on this very topic. Here they talk about some of the abnormalities: https://www.nature.com/articles/s41586-021-03595-z
Re:Room-Temperature Superconductor Discovery Meets with Resi... by kraussvonespy on Thursday March 09, 2023 @07:53PM (#35089087)
Looking forward to giving the Nature paper a read. I appreciate your time and wisdom!
Re:Room-Temperature Superconductor Discovery Meets with Resi... by perihelions on Wednesday March 08, 2023 @12:38PM (#35072105)
Thread:

https://news.ycombinator.com/item?id=32993556 ("Retraction of Room-temperature superconductivity in a carbonaceous sulfur hydride (nature.com)", 46 comments)

Re:Room-Temperature Superconductor Discovery Meets with Resi... by donnowhy on Wednesday March 08, 2023 @12:53PM (#35072289)
> until this gets independently replicated.

hmm, very interesting. I don't think it works like that anymore. The next step has got to be commercial availability. else investors to would loose money or worse, some Chinese company could "steal" the future profits from this valuable novel technology painstakingly developed by the publishing group.

Re:Room-Temperature Superconductor Discovery Meets with Resi... by sigmoid10 on Wednesday March 08, 2023 @07:21PM (#35076675)
Even if it turns out to be true, this result is still very far from commercial applications. It would be a fantastic thread to continue for academic research groups at universities, but pretty much noone else will care about it.
Re:Room-Temperature Superconductor Discovery Meets with Resi... by kloch on Wednesday March 08, 2023 @03:22PM (#35074248)
> Reactions by 10 independent experts contacted by Quanta ranged from unbridled excitement to outright dismissal, with many of the experts expressing some version of cautious optimism.

This is exactly how an arbitrary group of scientists should react to extraordinary claims like this. Not 100% dismissal because of the history or provenance of the researchers, not 100% acceptance without independent replication.