Alterslash

the unofficial Slashdot digest
 

Contents

  1. OpenAI’s Sam Altman Wants AI in the Hands of the People - and Universal Basic Compute?
  2. Will Smarter Cars Bring ‘Optimized’ Traffic Lights?
  3. Australia Criticized For Ramping Up Gas Extraction Through ‘2050 and Beyond’
  4. Linux Kernel 6.9 Officially Released
  5. Reddit Grows, Seeks More AI Deals, Plans ‘Award’ Shops, and Gets Sued
  6. OpenAI’s Sam Altman on iPhones, Music, Training Data, and Apple’s Controversial iPad Ad
  7. Webb Telescope Finds a (Hot) Earth-Sized Planet With an Atmosphere
  8. Could Atomically Thin Layers Bring A 19x Energy Jump In Battery Capacitors?
  9. Photographer Sets World Record for Fastest Drone Flight at 298 MPH
  10. Is Dark Matter’s Main Rival Theory Dead?
  11. Father of SQL Says Yes to NoSQL
  12. AMD Core Performance Boost For Linux Getting Per-CPU Core Controls
  13. Are Small Modular Nuclear Reactors Costly and Unviable?
  14. Former Boeing Quality Inspector Turns Whistleblower, Says Plane Parts Had Serious Defects
  15. The World’s Largest Vaccuum to Suck Climate Pollution From the Air Just Began Operating

Alterslash picks up to the best 5 comments from each of the day’s Slashdot stories, and presents them on a single page for easy reading.

OpenAI’s Sam Altman Wants AI in the Hands of the People - and Universal Basic Compute?

Posted by EditorDavid View on SlashDot Skip
OpenAI CEO Sam Altman gave an hour-long interview to the “All-In” podcast (hosted by Chamath Palihapitiya, Jason Calacanis, David Sacks and David Friedberg).

And when asked about this summer’s launch of the next version of ChatGPT, Altman said they hoped to “be thoughtful about how we do it, like we may release it in a different way than we’ve released previous models…

Altman: One of the things that we really want to do is figure out how to make more advanced technology available to free users too. I think that’s a super-important part of our mission, and this idea that we build AI tools and make them super-widely available — free or, you know, not-that-expensive, whatever that is — so that people can use them to go kind of invent the future, rather than the magic AGI in the sky inventing the future, and showering it down upon us. That seems like a much better path. It seems like a more inspiring path.

I also think it’s where things are actually heading. So it makes me sad that we have not figured out how to make GPT4-level technology available to free users. It’s something we >really want to do…

Q: It’s just very expensive, I take it?

Altman: It’s very expensive.
But Altman said later he’s confident they’ll be able to reduce cost.
Altman: I don’t know, like, when we get to intelligence too cheap to meter, and so fast that it feels instantaneous to us, and everything else, but I do believe we can get there for, you know, a pretty high level of intelligence. It’s important to us, it’s clearly important to users, and it’ll unlock a lot of stuff.
Altman also thinks there’s “great roles for both” open-source and closed-source models, saying “We’ve open-sourced some stuff, we’ll open-source more stuff in the future.

“But really, our mission is to build toward AGI, and to figure out how to broadly distribute its benefits… " Altman even said later that “A huge part of what we try to do is put the technology in the hands of people…”
Altman: The fact that we have so many people using a free version of ChatGPT that we don’t — you know, we don’t run ads on, we don’t try to make money on it, we just put it out there because we want people to have these tools — I think has done a lot to provide a lot of value… But also to get the world really thoughtful about what’s happening here. It feels to me like we just stumbled on a new fact of nature or science or whatever you want to call it… I am sure, like any other industry, I would expect there to be multiple approaches and different peoiple like different ones.
Later Altman said he was “super-excited” about the possibility of an AI tutor that could reinvent how people learn, and “doing faster and better scientific discovery… that will be a triumph.”

But at some point the discussion led him to where the power of AI intersects with the concept of a universal basic income:
Altman: Giving people money is not going to go solve all the problems. It is certainly not going to make people happy. But it might solve some problems, and it might give people a better horizon with which to help themselves.

Now that we see some of the ways that AI is developing, I wonder if there’s better things to do than the traditional conceptualization of UBI. Like, I wonder — I wonder if the future looks something more like Universal Basic Compute than Universal Basic Income, and everybody gets like a slice of GPT-7’s compute, and they can use it, they can re-sell it, they can donate it to somebody to use for cancer research. But what you get is not dollars but this like slice — you own part of the the productivity.
Altman was also asked about the “ouster” period where he was briefly fired from OpenAI — to which he gave a careful response:
Altman: I think there’s always been culture clashes at — look, obviously not all of those board members are my favorite people in the world. But I have serious respect for the gravity with which they treat AGI and the importance of getting AI safety right. And even if I stringently disagree with their decision-making and actions, which I do, I have never once doubted their integrity or commitment to the sort of shared mission of safe and beneficial AGI…

I think a lot of the world is, understandably, very afraid of AGI, or very afraid of even current AI, and very excited about it — and even more afraid, and even more excited about where it’s going. And we wrestle with that, but I think it is unavoidable that this is going to happen. I also think it’s going to be tremendously beneficial. But we do have to navigate how to get there in a reasonable way. And, like a lot of stuff is going to change. And change is pretty uncomfortable for people. So there’s a lot of pieces that we’ve got to get right…

I really care about AGI and think this is like the most interesting work in the world.

give it a rest

By Mr. Dollar Ton • Score: 3 Thread

this is, like, the third post about this interview today. who cares about public statements of some suit-and-tie, whose job is to lie to the public?

How exceptionally convenient…

By fuzzyfuzzyfungus • Score: 4, Insightful Thread
It seems…not at all…self-interested that he dismisses the idea of doing UBI by just giving people money with which they can buy whatever products or services they deem most useful to them(including; but far from limited to, chatbot time) as an ineffective old-and-busted idea; but hails the potential of providing a universal chatbot ration as an exciting way forward; despite the fact that someone with money can always just go and buy chatbot; while someone with chatbot had better have a problem that chatbot can be applied to or be ready to go to the trouble of finding a buyer in order to cash out and reach the state that the UBI guy starts in.

One can certainly see why a supplier of chatbot would be enthusiastic about a new guaranteed market for it(in much the same way that the agricultural lobby is very interested indeed in welfare programs as a means of getting money spent on their products); but that’s quite different from it being a credible or respectable view.

Will Smarter Cars Bring ‘Optimized’ Traffic Lights?

Posted by EditorDavid View on SlashDot Skip
“Researchers are exploring ways to use features in modern cars, such as GPS, to make traffic safer and more efficient,” reports the Associated Press.

“Eventually, the upgrades could do away entirely with the red, yellow and green lights of today, ceding control to driverless cars.”
Among those reimagining traffic flows is a team at North Carolina State University led by Ali Hajbabaie, an associate engineering professor. Rather than doing away with today’s traffic signals, Hajbabaie suggests adding a fourth light, perhaps a white one, to indicate when there are enough autonomous vehicles on the road to take charge and lead the way. “When we get to the intersection, we stop if it’s red and we go if it’s green,” said Hajbabaie, whose team used model cars small enough to hold. “But if the white light is active, you just follow the vehicle in front of you.”
He points out that this approach could be years aways, since it requires self-driving capability in 40% to 50% of the cars on the road.

But the article notes another approach which could happen sooner, talking to Henry Liu, a civil engineering professor who is leading ">a study through the University of Michigan:
They conducted a pilot program in the Detroit suburb of Birmingham using insights from the speed and location data found in General Motors vehicles to alter the timing of that city’s traffic lights. The researchers recently landed a U.S. Department of Transportation grant under the bipartisan infrastructure law to test how to make the changes in real time… Liu, who has been leading the Michigan research, said even with as little as 6% of the vehicles on Birmingham’s streets connected to the GM system, they provide enough data to adjust the timing of the traffic lights to smooth the flow… “The beauty of this is you don’t have to do anything to the infrastructure,” Liu said. “The data is not coming from the infrastructure. It’s coming from the car companies.”

Danielle Deneau, director of traffic safety at the Road Commission in Oakland County, Michigan, said the initial data in Birmingham only adjusted the timing of green lights by a few seconds, but it was still enough to reduce congestion.
“Even bigger changes could be in store under the new grant-funded research, which would automate the traffic lights in a yet-to-be announced location in the county.”

Sure, there are only cars in the traffic

By thesjaakspoiler • Score: 3 Thread

No pedestrians, bicycles or horse wagons.

In theory no stop is required

By LindleyF • Score: 3 Thread
You just need enough space between vehicles for a vehicle on the other road to pass through. That requires precision timing though. Or we could just do roundabouts everywhere.

So ransomware stops all traffic

By rapjr • Score: 3 Thread
or makes it ignore any rules at all. And everyone’s location history gets tracked and stolen by China so they can blackmail politicians, police, military officers, diplomatic personnel, and CEO’s.

Australia Criticized For Ramping Up Gas Extraction Through ‘2050 and Beyond’

Posted by EditorDavid View on SlashDot Skip
Slashdot reader sonlas shared this report from the BBC:
Australia has announced it will ramp up its extraction and use of gas until “2050 and beyond”, despite global calls to phase out fossil fuels. Prime Minister Anthony Albanese’s government says the move is needed to shore up domestic energy supply while supporting a transition to net zero… Australia — one of the world’s largest exporters of liquefied natural gas — has also said the policy is based on “its commitment to being a reliable trading partner”. Released on Thursday, the strategy outlines the government’s plans to work with industry and state leaders to increase both the production and exploration of the fossil fuel. The government will also continue to support the expansion of the country’s existing gas projects, the largest of which are run by Chevron and Woodside Energy Group in Western Australia…

The policy has sparked fierce backlash from environmental groups and critics — who say it puts the interest of powerful fossil fuel companies before people. “Fossil gas is not a transition fuel. It’s one of the main contributors to global warming and has been the largest source of increases of CO2 [emissions] over the last decade,” Prof Bill Hare, chief executive of Climate Analytics and author of numerous UN climate change reports told the BBC… Successive Australian governments have touted gas as a key “bridging fuel”, arguing that turning it off too soon could have “significant adverse impacts” on Australia’s economy and energy needs. But Prof Hare and other scientists have warned that building a net zero policy around gas will “contribute to locking in 2.7-3C global warming, which will have catastrophic consequences”.

Australia wil not go the way of Germany

By SuperKendall • Score: 3, Insightful Thread

Just because much of the EU has planned to become an energy-short third world nation, does not mean the rest of the nations have to. Most will engage in common sense and make sure citizens have enough power… and in Australia power literally means life because of the need for reliable AC.

And since Australia only emits around 1% of global CO2 emissions, does it really matter if they go up a little? What Australia does is literally nothing compared to choice China and India make.

Re:gas = renewables

By Anonymous Coward • Score: 5, Insightful Thread

none of us have ever heard of batteries and there definitely aren’t examples of them working in Australia, so your argument is very persuasive.

please, explain how because capacity doesn’t exist right now it never can. Go on. We’ve never heard this argument before.

Re:Australia wil not go the way of Germany

By khchung • Score: 5, Informative Thread

And since Australia only emits around 1% of global CO2 emissions, does it really matter if they go up a little? What Australia does is literally nothing compared to choice China and India make.

Ok, now apply the same logic to every third world country, except China and India. Now what do you get? About half of the world’s population is ok continue to spew out as much CO2 as up to what Australians are happily doing, then the world is doomed and it no longer matters what China or India do anymore (which, of course, then China and India will use to say to justify their CO2 emissions).

When rich first world nations, emitting 3-10x more CO2 per person above average, refused to suffer any pain to cut their emission, why the fxxk should poor third world nations do anything, suffer any pain, to do so?

Re:Australia wil not go the way of Germany

By JBMcB • Score: 5, Insightful Thread

And since Australia only emits around 1% of global CO2 emissions, does it really matter if they go up a little?

If they are increasing natural gas usage to replace coal fired power plants, their CO2 emissions will go down.

Re:Australia wil not go the way of Germany

By Admiral Krunch • Score: 4, Funny Thread

If they are increasing natural gas usage to replace coal fired power plants, their CO2 emissions will go down.

There’s always one killjoy stepping in with facts to try and stop everyone’s perfectly good hysterical ranting.

Linux Kernel 6.9 Officially Released

Posted by EditorDavid View on SlashDot Skip
“6.9 is now out,” Linus Torvalds posted on the Linux kernel mailing list, “and last week has looked quite stable (and the whole release has felt pretty normal).”

Phoronix writes that Linux 6.9 “has a number of exciting features and improvements for those habitually updating to the newest version.” And Slashdot reader prisoninmate shared this report from 9to5Linux:
Highlights of Linux kernel 6.9 include Rust support on AArch64 (ARM64) architectures, support for the Intel FRED (Flexible Return and Event Delivery) mechanism for improved low-level event delivery, support for AMD SNP (Secure Nested Paging) guests, and a new dm-vdo (virtual data optimizer) target in device mapper for inline deduplication, compression, zero-block elimination, and thin provisioning.

Linux kernel 6.9 also supports the Named Address Spaces feature in GCC (GNU Compiler Collection) that allows the compiler to better optimize per-CPU data access, adds initial support for FUSE passthrough to allow the kernel to serve files from a user-space FUSE server directly, adds support for the Energy Model to be updated dynamically at run time, and introduces a new LPA2 mode for ARM 64-bit processors…

Linux kernel 6.9 will be a short-lived branch supported for only a couple of months. It will be succeeded by Linux kernel 6.10, whose merge window has now been officially opened by Linus Torvalds. Linux kernel 6.10 is expected to be released in mid or late September 2024.
“Rust language has been updated to version 1.76.0 in Linux 6.9,” according to the article. And Linus Torvalds shared one more details on the Linux kernel mailing list.

“I now have a more powerful arm64 machine (thanks to Ampere), so the last week I’ve been doing almost as many arm64 builds as I have x86-64, and that should obviously continue during the upcoming merge window too.”

Not quite eye peeling stuff

By christoban • Score: 5, Funny Thread

I remember when the big update was USB support! I just turned 48 yesterday and it’s a little depressing.

Re:Not quite eye peeling stuff

By test321 • Score: 5, Insightful Thread

That’s because Linux won. In that old past Linux support was late as compared to Windows, so you’d be waiting for things like USB. Right now new things are supported in Linux first, and long before they reach your hands. USB4 is supported since kernel 5.6 in March 2020, 18 months before Windows.

Re:Obligatory

By ls671 • Score: 4, Informative Thread

Nah in 69 the only way in is through the mouth.

Re:Not quite eye peeling stuff

By Temkin • Score: 4, Interesting Thread

remember when the big update was USB support! I just turned 48 yesterday and it’s a little depressing.

Kids these days…

My first kernel was 0.95a. I only remember that because 0.95b brought in the parallel printer port.

What’s funny is I remember that, but can’t prove it. Kernel.org goes back to 0.99 patch 10. Which is amusing because it contains entries like:

CHANGES since 0.99 patchlevel 14:

  - too many to count, really. Besides, I’ve lost my notes.

At least Linus didn’t blame the dog for eating his homework. :)

And Happy Belated Birthday!

Reddit Grows, Seeks More AI Deals, Plans ‘Award’ Shops, and Gets Sued

Posted by EditorDavid View on SlashDot Skip
Reddit reported its first results since going public in late March. Yahoo Finance reports:
Daily active users increased 37% year over year to 82.7 million. Weekly active unique users rose 40% from the prior year. Total revenue improved 48% to $243 million, nearly doubling the growth rate from the prior quarter, due to strength in advertising. The company delivered adjusted operating profits of $10 million, versus a $50.2 million loss a year ago. [Reddit CEO Steve] Huffman declined to say when the company would be profitable on a net income basis, noting it’s a focus for the management team. Other areas of focus include rolling out a new user interface this year, introducing shopping capabilities, and searching for another artificial intelligence content licensing deal like the one with Google.
Bloomberg notes that already Reddit “has signed licensing agreements worth $203 million in total, with terms ranging from two to three years. The company generated about $20 million from AI content deals last quarter, and expects to bring in more than $60 million by the end of the year.”

And elsewhere Bloomberg writes that Reddit “plans to expand its revenue streams outside of advertising into what Huffman calls the ‘user economy’ — users making money from others on the platform… "
In the coming months Reddit plans to launch new versions of awards, which are digital gifts users can give to each other, along with other products… Reddit also plans to continue striking data licensing deals with artificial intelligence companies, expanding into international markets and evaluating potential acquisition targets in areas such as search, he said.
Meanwhile, ZDNet notes that this week a Reddit announcement “introduced a new public content policy that lays out a framework for how partners and third parties can access user-posted content on its site.”
The post explains that more and more companies are using unsavory means to access user data in bulk, including Reddit posts. Once a company gets this data, there’s no limit to what it can do with it. Reddit will continue to block “bad actors” that use unauthorized methods to get data, the company says, but it’s taking additional steps to keep users safe from the site’s partners.... Reddit still supports using its data for research: It’s creating a new subreddit — r/reddit4researchers — to support these initiatives, and partnering with OpenMined to help improve research. Private data is, however, going to stay private.

If a company wants to use Reddit data for commercial purposes, including advertising or training AI, it will have to pay. Reddit made this clear by saying, “If you’re interested in using Reddit data to power, augment, or enhance your product or service for any commercial purposes, we require a contract.” To be clear, Reddit is still selling users’ data — it’s just making sure that unscrupulous actors have a tougher time accessing that data for free and researchers have an easier time finding what they need.
And finally, there’s some court action, according to the Register. Reddit “was sued by an unhappy advertiser who claims that internet giga-forum sold ads but provided no way to verify that real people were responsible for clicking on them.”
The complaint [PDF] was filed this week in a U.S. federal court in northern California on behalf of LevelFields, a Virginia-based investment research platform that relies on AI. It says the biz booked pay-per-click ads on the discussion site starting September 2022… That arrangement called for Reddit to use reasonable means to ensure that LevelField’s ads were delivered to and clicked on by actual people rather than bots and the like. But according to the complaint, Reddit broke that contract…

LevelFields argues that Reddit is in a particularly good position to track click fraud because it’s serving ads on its own site, as opposed to third-party properties where it may have less visibility into network traffic… Nonetheless, LevelFields’s effort to obtain IP address data to verify the ads it was billed for went unfulfilled. The social media site “provided click logs without IP addresses,” the complaint says. “Reddit represented that it was not able to provide IP addresses.”
“The plaintiffs aspire to have their claim certified as a class action,” the article adds — along with an interesting statistic.

“According to Juniper Research, 22 percent of ad spending last year was lost to click fraud, amounting to $84 billion.”

Oh Reddit.. once a good resource..

By luvirini • Score: 5, Informative Thread

.. How you have fallen..

I mean, there are still some great communities and helpfull information there but the tide is shifting.

It used to be that for any obscure topic, like how to program a specific microcontroller, there would likely be a subreddit about such, and while to post volume on it might be low, it was usually followd by people who actually knew something.

The big subreddits were usually always bad though..

But now the people are instead on some discord server that is not searchable and the actual useful articles are published on many separate sites.

Specially the rise of discord has been bad for both Reddit and for actual access to information.

Reddit Joins The Business World

By NoWayNoShapeNoForm • Score: 3 Thread

Now that Reddit has joined the business world we can expect all sorts of crazy news stories about them.

* Big Golden Parachute Payments for certain C-level executives *

* Interesting and possibly dubious financial statements that call into question their accounting proctices *

* Various auditors wanting to closely examine Reddit’s userbase & ad revenue growth claims *

Yup, all the sorrid and tawdry stories that make big business what it is today.

OpenAI’s Sam Altman on iPhones, Music, Training Data, and Apple’s Controversial iPad Ad

Posted by EditorDavid View on SlashDot Skip
OpenAI CEO Sam Altman gave an hour-long interview to the “All-In” podcast (hosted by Chamath Palihapitiya, Jason Calacanis, David Sacks and David Friedberg). And speaking on technology’s advance, Altman said “Phones are unbelievably good.... I personally think the iPhone is like the greatest piece of technology humanity has ever made. It’s really a wonderful product.”


Q: What comes after it?

Altman: I don’t know. I mean, that was what I was saying. It’s so good, that to get beyond it, I think the bar is quite high.

Q: You’ve been working with Jony Ive on something, right?

Altman: We’ve been discussing ideas, but I don’t — like, if I knew…


Altman said later he thought voice interaction “feels like a different way to use a computer.”

But the conversation turned to Apple in another way. It happened in a larger conversation where Altman said OpenAI has “currently made the decision not to do music, and partly because exactly these questions of where you draw the lines…”

Altman: Even the world in which — if we went and, let’s say we paid 10,000 musicians to create a bunch of music, just to make a great training set, where the music model could learn everything about song structure and what makes a good, catchy beat and everything else, and only trained on that — let’s say we could still make a great music model, which maybe we could. I was posing that as a thought experiment to musicians, and they were like, “Well, I can’t object to that on any principle basis at that point — and yet there’s still something I don’t like about it.” Now, that’s not a reason not to do it, um, necessarily, but it is — did you see that ad that Apple put out… of like squishing all of human creativity down into one really iPad…?

There’s something about — I’m obviously hugely positive on AI — but there is something that I think is beautiful about human creativity and human artistic expression. And, you know, for an AI that just does better science, like, “Great. Bring that on.” But an AI that is going to do this deeply beautiful human creative expression? I think we should figure out — it’s going to happen. It’s going to be a tool that will lead us to greater creative heights. But I think we should figure out how to do it in a way that preserves the spirit of what we all care about here.
What about creators whose copyrighted materials are used for training data? Altman had a ready answer — but also some predictions for the future. “On fair use, I think we have a very reasonable position under the current law. But I think AI is so different that for things like art, we’ll need to think about them in different ways…”
Altman:I think the conversation has been historically very caught up on training data, but it will increasingly become more about what happens at inference time, as training data becomes less valuable and what the system does accessing information in context, in real-time… what happens at inference time will become more debated, and what the new economic model is there.
Altman gave the example of an AI which was never trained on any Taylor Swift songs — but could still respond to a prompt requesting a song in her style.
Altman: And then the question is, should that model, even if it were never trained on any Taylor Swift song whatsoever, be allowed to do that? And if so, how should Taylor get paid? So I think there’s an opt-in, opt-out in that case, first of all — and then there’s an economic model.
Altman also wondered if there’s lessons in the history and economics of music sampling…

Seems like LESS debate over AI using context

By SuperKendall • Score: 3, Interesting Thread

the conversation has been historically very caught up on training data, but it will increasingly become more about what happens at inference time, as training data becomes less valuable and what the system does accessing information in context, in real-time… what happens at inference time will become more debated,

The “conversation” has been about training data, because so much of what is used for training ends up in output, and so much of the training data has come from people who were never asked if stuff they had up could be used for training (especially art).

The “inference time” argument around AI’s using context, seems vastly less debate prone to me - because that is so easily controlled, at least in terms of something like a local model making use of local app data. I would presumably have control over what apps allowed AI to see data they held, or even on what devices something would run so I could control context visible to the AI that way. It just seems so much less controversial since the inference is happening from my own data, based on my own request…

Huh? “iPhone is like the greatest piece of tech..”

By dfm3 • Score: 4, Insightful Thread
The iPhone? Really? How shortsighted can you be? I guess one could argue that it’s the greatest invention of the last two decades, but what about:

- the integrated circuit (without which there would be no iPhone)
- internal combustion engine / steam engine
- antibiotics
- the microscope
- sewer systems
- the electrical generator / turbine
- the sail
- bronze / metal alloys
- fire

Webb Telescope Finds a (Hot) Earth-Sized Planet With an Atmosphere

Posted by EditorDavid View on SlashDot Skip
An anonymous reader shared this report from the Associated Press:
A thick atmosphere has been detected around a planet that’s twice as big as Earth in a nearby solar system, researchers reported Wednesday.

The so-called super Earth — known as 55 Cancri e — is among the few rocky planets outside our solar system with a significant atmosphere, wrapped in a blanket of carbon dioxide and carbon monoxide. The exact amounts are unclear. Earth’s atmosphere is a blend of nitrogen, oxygen, argon and other gases. “It’s probably the firmest evidence yet that this planet has an atmosphere,” said Ian Crossfield, an astronomer at the University of Kansas who studies exoplanets and was not involved with the research.

The research was published in the journal Nature.
“The boiling temperatures on this planet — which can reach as hot as 4,200 degrees Fahrenheit (2,300 degrees Celsius) — mean that it is unlikely to host life,” the article points out.

“Instead, scientists say the discovery is a promising sign that other such rocky planets with thick atmospheres could exist that may be more hospitable.”

Temperatures as hot as 2,300 degrees Celsius

By Alain Williams • Score: 5, Funny Thread

Sounds like the perfect place to send all of our politicians.

Who else would you like to send ? Comments below please.

Nice improvement

By Baron_Yam • Score: 3 Thread

We can now do a atmospheric spectroscopic analysis of a hot rocky world 51 ly away. As telescopes and data analysis improves we’re going to eventually find smaller worlds, further from their stars. Maybe eventually we’ll find one with an odd oxygen imbalance and temperatures suitable for liquid water on its surface.

That’ll be an amazing day.

Oddly comical

By will4 • Score: 3 Thread

Whenever these science nugget stories come around, the ‘more funding’, ‘don’t cut our budget’, ‘it;s invaluable research’, ‘it could cure ' stories appear.

Do these stories need to get pumped out to justify and expand budgets in the government and academia?

NASA, the federal government should have a shared funding model gradually getting telescope users to rent and pay for more and more of the budget of these research facilities. And why does every science story allude to, blame or call a crisis on climate as a distraction from the rest of the article? Advertising 101?

https://spacenews.com/astronom…

“Astronomers criticize proposed space telescope budget cuts " Space News March 21, 2024

Could Atomically Thin Layers Bring A 19x Energy Jump In Battery Capacitors?

Posted by EditorDavid View on SlashDot Skip
Researchers believe they’ve discovered a new material structure that can improve the energy storage of capacitors. The structure allows for storage while improving the efficiency of ultrafast charging and discharging. The new find needs optimization but has the potential to help power electric vehicles. * An anonymous reader shared this report from Popular Mechanics:
In a study published in Science, lead author Sang-Hoon Bae, an assistant professor of mechanical engineering and materials science, demonstrates a novel heterostructure that curbs energy loss, enabling capacitors to store more energy and charge rapidly without sacrificing durability… Within capacitors, ferroelectric materials offer high maximum polarization. That’s useful for ultra-fast charging and discharging, but it can limit the effectiveness of energy storage or the “relaxation time” of a conductor. “This precise control over relaxation time holds promise for a wide array of applications and has the potential to accelerate the development of highly efficient energy storage systems,” the study authors write.

Bae makes the change — one he unearthed while working on something completely different — by sandwiching 2D and 3D materials in atomically thin layers, using chemical and nonchemical bonds between each layer. He says a thin 3D core inserts between two outer 2D layers to produce a stack that’s only 30 nanometers thick, about 1/10th that of an average virus particle… The sandwich structure isn’t quite fully conductive or nonconductive.

This semiconducting material, then, allows the energy storage, with a density up to 19 times higher than commercially available ferroelectric capacitors, while still achieving 90 percent efficiency — also better than what’s currently available.
Thanks to long-time Slashdot reader schwit1 for sharing the article.

Re:breakdown voltage

By cats-paw • Score: 5, Interesting Thread

Yes it will.

Silicon dioxide is on the order of 2-3V/nm (it depends) so a 30nm thick layer of a similar dielectric would be on the order of 60-100V. You have to optimize the number of cells you can put in series versus the series resistance.

Silicon dioxide is a very, very good insulator, however this material system appears to be closer to a semiconductor, so the breakdown voltage is likely even lower.

This could still have significant application in electronics where having 2 or 3 V is enough voltage and where a very high value capacitor (100s of uF) with a very low series resistance (single digit milliohms) is a problem that still needs to be solved (it’s currently done by combining different types of capacitors, consuming a lot of space and also by locating the low resistance capacitors in a package with the die, consuming a lot of space).

Looking a lot less likely to be applicable in EVs where a high voltage is important to keep the current low to prevent IR losses. it’s also a lot less likely because it doesn’t really seem that this process can be scaled up to make capacitors that have total surface areas measured in square meters.

I think the important take away from this , which is not obvious because the TFA is terrible and the Science article is paywalled, is that they’ve devised a new strategy to approach the problem of low loss and high capacitance.

Capacitors, not batteries

By orzetto • Score: 3 Thread

Capacitors store electric energy physically (in electric fields) and have far lower energy density and far higher costs than batteries, which store energy chemically.

Capacitors can be used for some niche operations, like storing braking energy in trucks, but last time I looked the prices were in the range of 10,000 USD/kWh. Their main advantage is they can discharge very fast, so if you need a little energy but in a very short time they can be useful.

They have never been, and will likely never be, a serious contender in energy storage. 19x increased storage density is not going to help, even before we consider whether this invention can be mass-produced and what its price would be.

That’s not to say this is a small achievement, there are certainly plenty of uses e.g. in power electronics for this technology. But calling it “batteries” and dog-whistling people in thinking this is going to make it in their EV battery is disingenuous.

Photographer Sets World Record for Fastest Drone Flight at 298 MPH

Posted by EditorDavid View on SlashDot Skip
An anonymous reader shared this report from PetaPixel:
A photographer and content creator has set the world record for the fastest drone flight after his custom-made aircraft achieved a staggering 298.47 miles per hour (480.2 kilometers per hour). Guinness confirmed the record noting that Luke Maximo Bell and his father Mike achieved the “fastest ground speed by a battery-powered remote-controlled (RC) quadcopter.”

Luke, who has previously turned his GoPro into a tennis ball, describes it as the most “frustrating and difficult project” he has ever worked on after months of working on prototypes that frequently caught fire. From the very first battery tests for the drone that Luke calls Peregrine 2, there were small fires as it struggled to cope with the massive amount of current which caused it to heat up to over 266 degrees Fahrenheit (130 degrees Celsius). The motor wires also burst into flames during full load testing causing Luke and Mike to use thicker ones so they didn’t fail…

After 3D-printing the final model and assembling all the parts, Luke took it for a maiden flight which immediately resulted in yet another fire. This setback made Bell almost quit the project but he decided to remake all the parts and try again — which also ended in fire. This second catastrophe prompted Luke and his Dad to “completely redesign the whole drone body.” It meant weeks of work as the new prototype was once again tested, 3D-printed, and bolted together.

Perseverance pays

By andrewbaldwin • Score: 4 Thread

" Luke took it for a maiden flight which immediately resulted in yet another fire. This setback made Bell almost quit the project but he decided to remake all the parts and try again - which also ended in fire. "

Good on them for keeping on trying.

But I must say it reminds me of the classic scene ** :

“Everyone said I was daft to build a castle on a swamp, but I built in all the same, just to show them. It sank into the swamp. So I built a second one. That sank into the swamp. So I built a third. That burned down, fell over, then sank into the swamp. But the fourth one stayed up.”

** If you need to look that up - you’re either too young or insufficiently nerdy — :-)

Usual size

By slack_justyb • Score: 4, Interesting Thread

Don’t quote me on this, but I believe that the usual for power transmission in drones to the motor is 18 AWG, which has max transmission of 2.3A. I believe 18 AWG is used because of the weight. So for him to push the required amps would have required a thicker conductor, which in turn adds weight. I’m sure that this can become a headache of trying to balance weight, current required, and the other factors like rotor diameter, drag vs lift calculations, etc.

Good on him for finding a good balance to achieve this speed.

Re:Fastest unclassified drone flight.

By CrankyFool • Score: 5, Insightful Thread
Worth noting that technically it’s “fastest ground speed by a battery-powered remote-controlled quadcopter.” There are a whole lot of military drones faster than 298 MPH (see https://owlcation.com/social-s… ) but I don’t believe any of the known ones are quadcopters. (Nor, to keep this accomplishment in mind, were any of these built by a father and son team almost literally in their garage for almost literally no money)

Re: Fastest unclassified drone flight.

By ThumpBzztZoom • Score: 4, Insightful Thread

Worth noting that the headline said “world record for fastest drone flight”, which is false regardless of the correct attribution in the article.

It’s no different than putting the headline “world record for fastest motorized vehicle” on an article about someone setting a record for 50cc scooters.

Re:Quadcopter?

By ceoyoyo • Score: 4, Informative Thread

It uses rotors for lift (yes, even at high speed) so it’s a “copter” and it’s got four of them, so it’s a quadcopter.

It doesn’t have any aerodynamic planes (i.e. wings) so it’s not a “plane” and it certainly doesn’t have any rockets.

Is Dark Matter’s Main Rival Theory Dead?

Posted by EditorDavid View on SlashDot Skip
“One of the biggest mysteries in astrophysics today is that the forces in galaxies do not seem to add up,” write two U.K. researchers in the Conversation:
Galaxies rotate much faster than predicted by applying Newton’s law of gravity to their visible matter, despite those laws working well everywhere in the Solar System. To prevent galaxies from flying apart, some additional gravity is needed. This is why the idea of an invisible substance called dark matter was first proposed. But nobody has ever seen the stuff. And there are no particles in the hugely successful Standard Model of particle physics that could be the dark matter — it must be something quite exotic.

This has led to the rival idea that the galactic discrepancies are caused instead by a breakdown of Newton’s laws. The most successful such idea is known as Milgromian dynamics or Mond [also known as modified Newtonian dynamics], proposed by Israeli physicist Mordehai Milgrom in 1982. But our recent research shows this theory is in trouble…

Due to a quirk of Mond, the gravity from the rest of our galaxy should cause Saturn’s orbit to deviate from the Newtonian expectation in a subtle way. This can be tested by timing radio pulses between Earth and Cassini. Since Cassini was orbiting Saturn, this helped to measure the Earth-Saturn distance and allowed us to precisely track Saturn’s orbit. But Cassini did not find any anomaly of the kind expected in Mond. Newton still works well for Saturn… Another test is provided by wide binary stars — two stars that orbit a shared centre several thousand AU apart. Mond predicted that such stars should orbit around each other 20% faster than expected with Newton’s laws. But one of us, Indranil Banik, recently led a very detailed study that rules out this prediction. The chance of Mond being right given these results is the same as a fair coin landing heads up 190 times in a row. Results from yet another team show that Mond also fails to explain small bodies in the distant outer Solar System…

The standard dark matter model of cosmology isn’t perfect, however. There are things it struggles to explain, from the universe’s expansion rate to giant cosmic structures. So we may not yet have the perfect model. It seems dark matter is here to stay, but its nature may be different to what the Standard Model suggests. Or gravity may indeed be stronger than we think — but on very large scales only.
“Ultimately though, Mond, as presently formulated, cannot be considered a viable alternative to dark matter any more,” the researchers conclude. “We may not like it, but the dark side still holds sway.”

Re: is gravity a 5+d force?

By PPH • Score: 5, Interesting Thread

There is no such thing as gravity. It’s just space-time curved by the presence of mass. So we’re looking for that mass.

My guess is it will turn out to be something like quantum virtual particles popping in and out of existance. Particle/anti-particle pairs have properties which cancel each other out. Except for mass, which is always positive for both. We can’t detect them because they don’t last long enough to interact with anything. Or clump together into larger “dark matter” objects.

Nice - a counterexample to Betteridge’s law

By LeDopore • Score: 5, Interesting Thread

Well, I guess they didn’t ask *should* dark matter’s main rival theory be dead. The answer to that is most definitely yes, in my opinion.

Here’s the thing. It’s not like it’s just galactic rotation curves that give evidence for dark matter. Watch this video (fast forward to 2:36 if you don’t want the intro) to see a list of observational evidence explainable by dark matter: https://www.youtube.com/watch?….

We know almost for sure that dark matter exists because it does so many things other than just explain the galactic rotation curves. We can see gravitational lensing from dark matter clumps. Check out the bullet cluster, where the non-dark matter seems to have collided but the dark matter sailed on through. The power spectrum of fluctuations in the cosmic microwave background fits the dark matter hypothesis. The list goes on: https://en.wikipedia.org/wiki/…. Mond could not explain even half of these items; dark matter existing would explain each of them.

Is it possible that there’s dark matter and also Mond? Maybe, if Mond is so weak it makes indetectible perturbations. However, it hard even to write down a theory of Mond that respects special relativity. (Mond typically says to strengthen gravity for any acceleration below some cutoff value, but making that cutoff value observer-independent isn’t all that easy to do.). Mond was a really cool idea and I wanted it to be true when I heard about it in 2003. Unfortunately the evidence just isn’t there, and dark matter is more or less undeniable at this point.

The big question is what dark matter is made of, and the most boring (read “probably correct”) hypothesis out there is that dark matter is made of axions (https://en.wikipedia.org/wiki/Axion). The strong force seems to obey CP symmetry precisely - every experiment you can do that involves just the strong force looks identical whether you use regular matter or a mirror-image setup made of antimatter. The symmetry is so precise, it’s kind of like walking into a room and seeing a pencil balanced on its tip on the table. Frank Wilczek and Steven Weinberg asked: suppose there’s an invisible string on the eraser end of the pencil holding it up. What properties must that string have? It turns out that not only would the candidate particle (they called the axion) solve the strong CP symmetry problem, it would also be a weakly interacting particle that would have been made in just the right abundance in our early universe to account for the mass of dark matter we observe today. We haven’t found axions directly yet, but it does feel like the puzzle pieces of dark matter and CP symmetry could fit together.

Disingenuous

By bill_mcgonigle • Score: 5, Insightful Thread

MOND is a class of hypotheses.

This article is motivated reasoning committing unforgivable composition error.

What a scientist does is test each hypothesis separately and see how theory and data correlate.

What a propagandist looking for funding does is throw out the scientific method to favor his friends.

One MOND hypothesis being ruled out is /progress/.

Since Supersymmetric approaches are obviously not bearing fruit, all options should be on the table.

Even ‘stretchy entanglement’, non-Mach event horizons, and other odd non-DM, non-MOND hypothesis.

Dishonest tribal people should be excluded from science funding.

“Look, it’s full of models!”

By davide marney • Score: 5, Interesting Thread

The standard dark matter model of cosmology isn’t perfect, however. There are things it struggles to explain, from the universe’s expansion rate to giant cosmic structures. So we may not yet have the perfect model.

What “model”? There is no “model” that accounts for all the observed data, what we have is a model that fails to explain all our observations, then essentially just gives a name to the bits we can’t account for. Then to confuse things further for the layman, somebody decided to use the name of a concrete object for this imaginary one, and then claims that 85% of the universe is made up of it! Fi, “dark matter”, that’s a terrible name. What is actually being described is just plain lack of knowing, an informed ignorance. It is neither “dark” nor “matter”.

I would suggest the word, “theory” instead of “model”. It is perfectly fine to tell people we just don’t know something, even if that something is important. “We can’t explain why the universe is expanding yet. The old theories don’t exactly fit, and the new ones don’t either.”

Gravitational Waves

By Roger W Moore • Score: 5, Informative Thread

We have observed gravity waves propagating across billions of light-years. So gravity appears to be more than just bent space.

That’s exactly what a gravitational wave is: a bend in space-time that propagates.

Father of SQL Says Yes to NoSQL

Posted by EditorDavid View on SlashDot Skip
An anonymous reader shared this report from the Register:
The co-author of SQL, the standardized query language for relational databases, has come out in support of the NoSQL database movement that seeks to escape the tabular confines of the RDBMS. Speaking to The Register as SQL marks its 50th birthday, Donald Chamberlin, who first proposed the language with IBM colleague Raymond Boyce in a 1974 paper [PDF], explains that NoSQL databases and their query languages could help perform the tasks relational systems were never designed for. “The world doesn’t stay the same thing, especially in computer science,” he says. “It’s a very fast, evolving, industry. New requirements are coming along and technology has to change to meet them, I think that’s what’s happening. The NoSQL movement is motivated by new kinds of applications, particularly web applications, that need massive scalability and high performance. Relational databases were developed in an earlier generation when scalability and performance weren’t quite as important. To get the scalability and performance that you need for modern apps, many systems are relaxing some of the constraints of the relational data model.”

[…] A long-time IBMer, Chamberlin is now semi-retired, but finds time to fulfill a role as a technical advisor for NoSQL company Couchbase. In the role, he has become an advocate for a new query language designed to overcome the "impedance mismatch" between data structures in the application language and a database, he says. UC San Diego professor Yannis Papakonstantinou has proposed SQL++ to solve this problem, with a view to addressing impedance mismatch between heavily object-based JavaScript, the core language for web development and the assumed relational approach embedded in SQL. Like C++, SQL++ is designed as a compatible extension of an earlier language, SQL, but is touted as better able to handle the JSON file format inherent in JavaScript. Couchbase and AWS have adopted the language, although the cloud giant calls it PartiQL.
At the end of the interview, Chamblin adds that “I don’t think SQL is going to go away. A large part of the world’s business data is encoded in SQL, and data is very sticky. Once you’ve got your database, you’re going to leave it there. Also, relational systems do a very good job of what they were designed to do…

"[I]f you’re a startup company that wants to sell shoes on the web or something, you’re going to need a database, and one of those SQL implementations will do the job for free. I think relational databases and the SQL language will be with us for a long time.”

Conflating

By Tablizer • Score: 5, Interesting Thread

There are bunches of issues raised that are not logical upon inspection. They seem to assume too much mutual exclusion of features. Until somebody proves that having Feature X prevents having Feature Y, we shouldn’t assume they are mutually exclusive*. (I don’t know if Chamberlin believes them mutually exclusive, the article is fuzzy on that, but many NoSQL fans do.)

For one, SQL is a high-level language and not a hardware architecture. Although there are proprietary hardware-centric extensions to some dialects, the language itself doesn’t make any assumptions about the hardware*.

And as pointed out, traditional RDBMS are gradually getting the “web scale” features, such as optionally loosening up ACID for distributed databases.

Another thing is most apps typical devs work on are NOT web-scale/enterprise. We shouldn’t bloat up stacks and tools meant for small and medium apps just to check off web-scale buzzwords on our resumes. That’s selfish, bloating the company so you can get more money elsewhere. (AKA “Resume Oriented Programming”) One-Tool-Size-Fits-All-Scales is a fool’s errand.

Often startups realize they need more flexible query options once their business matures, and start to miss ever more traditional RDBMS features, having to hand-code data features they wouldn’t otherwise.

One feature I would like to see is dynamic columns. PostgreSQL’s JSON approach makes JSON columns a second-class citizen to “real” columns. I don’t believe that’s necessary. I’d prefer something like the draft Dynamic Relational. For smaller projects or rapid prototyping, dynamism could simplify much. And you can incrementally lock down the schema as it matures.

As far as SQL the query language itself, I haven’t seen a general purpose replacement that’s clearly better. You don’t unseat the king of the hill with incrementally better. And SQL can be extended to fill in most weak spots. Any candidate replacement will have to prove its mettle over time. (Personally I’m a fan of the SMEQL draft concept, it’s more API-library-like than SQL’s keyword-heavy COBOL-like approach. For example, you don’t need a direct DDL, you just update the schema data dictionaries using regular query CRUD operations. The dictionaries don’t have to be actual tables, by the way, it’s just an interface using DRY in concepts.)

* Certain distributed features require making ACID-related trade-offs, but those tradeoffs can be configuration switches, and not different DB brands/languages for each ACID feature combo. That would be poor design DRY (outside of niches that need performance at any cost).

The data intergration elephant

By will4 • Score: 5, Insightful Thread

NoSQL adapts well for semi-structured data. It has significantly higher costs in these areas when considering a long lived system in a large corporation

- When it has to receive data from other systems and export data to other systems. Common for large businesses. The data import and export are considerably more complicated, error prone and costly when compared to tabular data.
- Reporting, another data export operation, is also a more costly common problem for NoSQL document data.
- Data quality over a long term. Document based systems need significantly more costly efforts to upgrade old documents to the latest document format for data quality purposes.
- Long term placing the burden of having to interpret multiple different document formats based on age in each system accessing the document based data versus relational.

Implementation teams will miss these by
- Only considering the NoSQL system itself
- Mistakenly assuming that all data access, data put into, data retrieved from the NoSQL system will go through the teams REST API.
      - A large mistake given that the REST API does not scale for millions of data rows without large costs, adds significant point to point legacy costs forcing each and every system to have a custom one-off REST call module implemented (not possible for many third party systems).
- Forcing each and every system to handle multiple generations of the same documents stored in the NoSQL system

Generically, it is placing more of the cost of business logic in each system that interacts with the NoSQL system instead of having that logic inside the NoSQL system. A REST API on top of the NoSQL system fails for the same reason.

Re:Meh.

By slack_justyb • Score: 5, Interesting Thread

Once you find yourself implementing joins in a NoSQL database

Ugh. We had a consumer facing application that had this exact thing happen. It was something that was developed without the backend team being brought in. Eventually they had to setup nightly tasks to clean duplicate data into a more normalized form. Any time those tasks failed, all hell broke lose. Eventually, they had their jobs write success or nothing to the backend DB2 and we had an IBM i nightly job that would scan the table for success or lack of a message for success. Any missing success messages had the IBM machine hit a web service that would ring the person on-call that night to check what happened.

There was never not a day the on-call had to troubleshoot at least one of the scripts that cleaned their data in the middle of the night. It was a cluster.

For sure, the NoSQL got them up and running and got them through their first two versions of the product. So major win there. But as soon as the complexity increased, the ability for their NoSQL solution to keep working just fell out and their resistance to change made it harder and harder till they dug themselves a hole they could barely get out of. At some point early on it should have moved to a proper object on the IBM, but they just dug in their heels and keep going with a solution that was creating more and more debt for them.

There’s good solutions and NoSQL can be among them, but there’s a point where you have to realize that a different technology is required. It isn’t to say one is better than the other any more to say that a hammer is better than a screwdriver. But people can get so stuck in picking one or the other that they can get themselves into trouble.

Re:But how does he pronounce SQL?

By Sique • Score: 5, Funny Thread
Another proof for an important Internet law: To get something right, post it wrongly on the Internet, and someone will correct you.

Re:But how does he pronounce SQL?

By HornyBastard • Score: 5, Funny Thread

Another proof for an important Internet law: To get something right, post it wrongly on the Internet, and someone will correct you.

It is called Murphy’s law.

AMD Core Performance Boost For Linux Getting Per-CPU Core Controls

Posted by EditorDavid View on SlashDot Skip
An anonymous reader shared this report from Phoronix:
For the past several months AMD Linux engineers have been working on AMD Core Performance Boost support for their P-State CPU frequency scaling driver. The ninth iteration of these patches were posted on Monday and besides the global enabling/disabling support for Core Performance Boost, it’s now possible to selectively toggle the feature on a per-CPU core basis…

The new interface is under /sys/devices/system/cpu/cpuX/cpufreq/amd_pstate_boost_cpb for each CPU core. Thus users can tune whether particular CPU cores are boosted above the base frequency.

Is this something for non-embedded usage?

By Skinkie • Score: 5, Insightful Thread
In order to make proper use of this, I guess you would want to set CPU-affinity per process (or for a specific interrupt), balance it, and increase (or decrease) the core frequency. I wonder if there is any desktop case for such precision control.

Are Small Modular Nuclear Reactors Costly and Unviable?

Posted by EditorDavid View on SlashDot Skip
The Royal Institution of Australia is a national non-profit hub for science communication, publishing the science magazine Cosmos four times a year.

This month they argued that small modular nuclear reactors "don’t add up as a viable energy source.”
Proponents assert that SMRs would cost less to build and thus be more affordable. However, when evaluated on the basis of cost per unit of power capacity, SMRs will actually be more expensive than large reactors. This ‘diseconomy of scale’ was demonstrated by the now-terminated proposal to build six NuScale Power SMRs (77 megawatts each) in Idaho in the United States. The final cost estimate of the project per megawatt was around 250 percent more than the initial per megawatt cost for the 2,200 megawatts Vogtle nuclear power plant being built in Georgia, US. Previous small reactors built in various parts of America also shut down because they were uneconomical.
The cost was four to six times the cost of the same electricity from wind and solar photovoltaic plants, according to estimates from the Australian Commonwealth Scientific and Industrial Research Organisation and the Australian Energy Market Operator. “The money invested in nuclear energy would save far more carbon dioxide if it were instead invested in renewables,” the article agues:
Small reactors also raise all of the usual concerns associated with nuclear power, including the risk of severe accidents, the linkage to nuclear weapons proliferation, and the production of radioactive waste that has no demonstrated solution because of technical and social challenges. One 2022 study calculated that various radioactive waste streams from SMRs would be larger than the corresponding waste streams from existing light water reactors…

Nuclear energy itself has been declining in importance as a source of power: the fraction of the world’s electricity supplied by nuclear reactors has declined from a maximum of 17.5 percent in 1996 down to 9.2 percent in 2022. All indications suggest that the trend will continue if not accelerate. The decline in the global share of nuclear power is driven by poor economics: generating power with nuclear reactors is costly compared to other low-carbon, renewable sources of energy and the difference between these costs is widening.
Thanks to Slashdot reader ZipNada for sharing the article.

Re:Storage

By Stephan Schulz • Score: 5, Informative Thread

>“The money invested in nuclear energy would save far more carbon dioxide if it were instead invested in renewables,”

But they are not doing the same job unless they also include storage. Plus the output could still be inconsistent if generation was too low for too long (due to not enough storage or freaky weather). And if that storage is lithium batteries, you have to add in all that life cycle carbon, as well.

To quote from the article: “In comparison, the cost of each megawatt-hour of electricity from wind and solar photovoltaic plants is around AUD$100 [as opposed to AUD$400-600 for SMRs], even after accounting for the cost involved in balancing the variability of output from solar and wind plants." (emphasis added by me).

Re:Math

By XXongo • Score: 5, Insightful Thread

Quick summary of conversation:

iAmWaySmarterThanYou: this summary is too simplistic, it doesn’t give details. I want details.

AC: there are plenty of details in the link given

iAmWaySmarterThanYou: I’m too lazy to read the links. I want a simplistic summary.

US SMR project cancelled

By michael_cain • Score: 5, Interesting Thread
The NuScale SMR project in the US was canceled last December. The US Dept of Energy provided the site for construction at the Idaho National Lab. DOE also put up most of a billion dollars to cover the costs of final detailed design and licensing. The NRC issued a license. A group of utilities (UAMPS) was going to buy the power.

Nuscale was required to issue updates from time to time, including current estimates for what the wholesale price of power would be. That price had gone up pretty much each iteration. The next update was due Jan 1, 2024, but the participants announced a month before that the project was canceled. No reason was given, but all of the rumors were that the projected wholesale price had gone to something over $60/MWh.

Regionally, independent wind farms are signing contracts to provide power at $19/MWh, or less.

Re:Math

By TeknoHog • Score: 5, Funny Thread

Quick summary of conversation:

iAmWaySmarterThanYou: this summary is too simplistic, it doesn’t give details. I want details.

AC: there are plenty of details in the link given

iAmWaySmarterThanYou: I’m too lazy to read the links. I want a simplistic summary.

This is too confusing. I want a simplistic summary of the conversation.

Re:Perhaps the only problem they could solve…

By Sique • Score: 5, Interesting Thread
They should. But they don’t.

Molten Salt reactors are known since 70 years now, as the first experimental one was running in 1954, the ASR. A second one was built 60 years ago, in 1964, and ran until 1969, clocking up two years of actual operation, an availability of about 50%, the MSRE

Those are the only two Molten Salt reactors ever being operational. Everything else was just theory. Most close to completion was the Molten Salt Breeder, but this one was never completed, as to work as a breeder, it would have had a positive temperature coefficient, making it close to become supercritical. Why, after 70 years of experience with an actual molten salt reactor, are there no viable plants actually producing electricity? To me, Molten Salt reactors look like the reactor equivalent of Anna Kournikova: They look nice, but they never win a single’s tournament.

Former Boeing Quality Inspector Turns Whistleblower, Says Plane Parts Had Serious Defects

Posted by EditorDavid View on SlashDot Skip
Thursday the BBC reported:
Plane bodies made by Boeing’s largest supplier regularly left the factory with serious defects, according to a former quality inspector at the firm. Santiago Paredes who worked for Spirit AeroSystems in Kansas, told the BBC he often found up to 200 defects on parts being readied for shipping to Boeing. He was nicknamed “showstopper” for slowing down production when he tried to tackle his concerns, he claimed.

Spirit said it “strongly disagree[d]" with the allegations. “We are vigorously defending against his claims,” said a spokesperson for Spirit, which remains Boeing’s largest supplier.

Mr Paredes made the allegations against Spirit in an exclusive interview with the BBC and the American network CBS, in which he described what he said he experienced while working at the firm between 2010 and 2022… “I was finding a lot of missing fasteners, a lot of bent parts, sometimes even missing parts....” Mr Paredes told the BBC that some of the defects he identified while at Spirit were minor — but others were more serious. He also claimed he was put under pressure to be less rigorous…

He now maintains he would be reluctant to fly on a 737 Max, in case it still carried flaws that originated in the Wichita factory. “I’d never met a lot of people who were scared of flying until I worked at Spirit,” he said. “And then, being at Spirit, I met a lot of people who were afraid of flying — because they saw how they were building the fuselages.”
“If quality mattered, I would still be at Spirit,” Paredes told CBS News, speaking publicly for the first time.
CBS News spoke with several current and former Spirit AeroSystems employees and reviewed photos of dented fuselages, missing fasteners and even a wrench they say was left behind in a supposedly ready-to-deliver component. Paredes said Boeing knew for years Spirit was delivering defective fuselages.
It could be just a coincidence, but the same day, the Associated Press ran story with this headline.

"Boeing plane carrying 85 people catches fire and skids off the runway in Senegal, injuring 10.”
It was the third incident involving a Boeing airplane this week. Also on Thursday, 190 people were safely evacuated from a plane in Turkey after one of its tires burst during landing at a southern airport, Turkey’s transportation ministry said.

how to avoid MAX

By writeRight • Score: 5, Informative Thread
Whistleblower quoted, “reluctant to fly on a 737 Max”. While he is not an aviation design expert, he can speak on quality control. I purposefully avoid the 737MAX because I think it needs a new FAA type certification and the required testing.due to Boeing jamming big fans where they didn’t fit. I start my travel planning at matrix.itasoftware.com and filter out flights on the MAX. In the “Extension Code” box, put in: -aircraft T:7M8 T:7M9

Money makes the monkey dance

By Savage-Rabbit • Score: 5, Insightful Thread

Santiago Paredes who worked for Spirit AeroSystems in Kansas, told the BBC he often found up to 200 defects on parts being readied for shipping to Boeing. He was nicknamed “showstopper” for slowing down production when he tried to tackle his concerns, he claimed.

This sums up in a sentence, why ‘self regulation by industry’ doesn’t work int he absence of outside followup and penalties for slacking off. There’s always some greedy asshole who thinks it’s a good idea increase profits in the short term by wrecking a reputation for quality built up over multiple decades of hard engineering work. Handing out nicknames like ‘showstopper’ to QA inspectors doesn’t just speak volumes about the rank stupidity of the management this that advocates such a policy. It also indicates that a number of regular Boeing workers signed up to this idea as well if they were spitting this pejorative nickname after Paredes and other QA inspectors whenever they walked by. I suppose there is truth to the old proverb: ‘Money makes the monkey dance”.

Re:Boeing’s management…

By ShanghaiBill • Score: 5, Insightful Thread

Who’ll go to jail?

Nobody.

If you want to put people in jail for stupidity and incompetence, you’ll need to build a lot more jails.

The decisions that killed people were the lack of redundant sensors on the 737MAX and skimping on pilot training, both of which were approved by the FAA.

Re: Sounds disgruntled

By piojo • Score: 5, Funny Thread

Do you know what disgruntled means?

It means his employer stopped gruntling him.

Re: Boeing’s management…

By madbrain • Score: 5, Interesting Thread

Criminal negligence is a thing. That seems to apply in this case.

The World’s Largest Vaccuum to Suck Climate Pollution From the Air Just Began Operating

Posted by EditorDavid View on SlashDot
An anonymous reader shared this report from CNN:
The “world’s largest” plant designed to suck planet-heating pollution out of the atmosphere like a giant vacuum began operating in Iceland on Wednesday. “Mammoth” is the second commercial direct air capture plant opened by Swiss company Climeworks in the country, and is 10 times bigger than its predecessor, Orca, which started running in 2021… Climeworks plans to transport the carbon underground where it will be naturally transformed into stone, locking up the carbon permanently… The whole operation will be powered by Iceland’s abundant, clean geothermal energy....

Climeworks started building Mammoth in June 2022, and the company says it is the world’s largest such plant. It has a modular design with space for 72 "collector containers" — the vacuum parts of the machine that capture carbon from the air — which can be stacked on top of each other and moved around easily. There are currently 12 of these in place with more due to be added over the next few months. Mammoth will be able to pull 36,000 tons of carbon from the atmosphere a year at full capacity, according to Climeworks. That’s equivalent to taking around 7,800 gas-powered cars off the road for a year…

All the carbon removal equipment in the world is only capable of removing around 0.01 million metric tons of carbon a year, a far cry from the 70 million tons a year needed by 2030 to meet global climate goals, according to the International Energy Agency [7,000x more]… Jan Wurzbacher, the company’s co-founder and co-CEO, said Mammoth is just the latest stage in Climeworks’ plan to scale up to 1 million tons of carbon removal a year by 2030 and 1 billion tons by 2050. Plans include potential DAC plants in Kenya and the United States.

Good experiment, too early to implement

By Baron_Yam • Score: 5, Informative Thread

We do need to test the tech, but we shouldn’t be implementing it at scale yet.

We release carbon to extract stored chemical energy. That energy must be returned to sequester carbon. For either direction, some energy is ‘lost’, not used for the purpose we intend it for.

The math is irrefutable - it would reduce atmospheric carbon more if this green energy was used to power whatever we want to power than to let those uses burn fossil fuels while this machine tries to clean up after them.

We’re still releasing more CO2 every year despite increasing our green energy production. That must stop, and reverse. When essentially all our energy production is ‘green’ and there’s some left over, THAT is when it is time for sequestration to start.

8700 cars ?

By thesjaakspoiler • Score: 5, Insightful Thread

paying someone to stop driving would be cheaper.

It’s a scam

By rsilvergun • Score: 5, Informative Thread
you can find plenty of articles, videos and studies pointing this out. Adam Something has my favorite.

It’s all a scam, just like how the plastic industry created recycling so we wouldn’t demand less plastic the oil industry is doing this crap to slow the move off their product.

Please for the love of all that’s holy can we not fall for these scams?

Re: Words mean things

By 50000BTU_barbecue • Score: 5, Insightful Thread

Neither is water, can I put 6 feet of water in your living room?

Re:Words mean things

By Rei • Score: 5, Insightful Thread

1) Alle Dinge sind Gift, und nichts ist ohne Gift; allein die Dosis macht, dass ein Ding kein Gift ist.

2) Increasing CO2 levels does help plants, via reducing photorespiration per unit carbon fixed. Not, however, as much as killing them with worsened weather harms them (in particular; a warming client sees the monsoon belts move poleward, dries out soil faster, makes rivers more seasonal, and increases the intensity of peak rain events - aka, both drought and flood become more common). Plants also have optimal cultivation temperatures, and most are C3 plants, which tend to not like hot weather. Higher temperatures make them less efficient, and again, to a greater degree than CO2 helps them. C4 plants are generally better at dealing with drought and higher temperatures, but they don’t benefit as much from increased CO2 availability, as they’re already so good at capturing CO2 and could grow in CO2 levels a tiny fraction of that which we have now.

3) This is a bizarre argument. So, say, if I dump tonnes of cobalt in your drinking water, that’s not pollution, because the human body needs to consume billionths of a gram per day? Some bacteria produce energy from oxidizing arsenic or using arsenic compounds to conduct photosynthesis - you okay with me contaminating your food supply with it? Some bacteria consume uranium - okay for me to fill your air with uranium dust?

The post you’re responding to is literally quoting the dictionary.