Alterslash

the unofficial Slashdot digest
 

Contents

  1. US Kicks Off AI Safety Talks With China
  2. Google Bringing Project Starline’s ‘Magic Window’ Experience To Real Video Calls
  3. Microsoft Set To Face EU Competition Charges Over Teams Software
  4. Squarespace To Go Private in $6.9 Billion Deal With Permira
  5. How Microsoft Employees Pressured the Company Over Its Oil Industry Ties
  6. OpenAI’s Sam Altman Wants AI in the Hands of the People - and Universal Basic Compute?
  7. Will Smarter Cars Bring ‘Optimized’ Traffic Lights?
  8. Australia Criticized For Ramping Up Gas Extraction Through ‘2050 and Beyond’
  9. Linux Kernel 6.9 Officially Released
  10. Reddit Grows, Seeks More AI Deals, Plans ‘Award’ Shops, and Gets Sued
  11. OpenAI’s Sam Altman on iPhones, Music, Training Data, and Apple’s Controversial iPad Ad
  12. Webb Telescope Finds a (Hot) Earth-Sized Planet With an Atmosphere
  13. Could Atomically Thin Layers Bring A 19x Energy Jump In Battery Capacitors?
  14. Photographer Sets World Record for Fastest Drone Flight at 298 MPH
  15. Is Dark Matter’s Main Rival Theory Dead?

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.

US Kicks Off AI Safety Talks With China

Posted by msmash View on SlashDot Skip
The United States is heading to Geneva this week to start a series of diplomatic talks with the Chinese government about artificial intelligence safety and risk standards. From a report:
The U.S. and China are in tight competition to dominate the AI market, both in the private sector and within their own governments. However, the two world powers have yet to agree on what it means to safely use the technologies they’re developing.

The United States and China will meet in Switzerland on Tuesday, senior administration officials told reporters during a briefing Friday. Officials from the White House and State Department will lead the U.S. delegation in the talks, while China will bring a delegation co-led by its Ministry of Foreign Affairs and National Development and Reform Commission. The talks will primarily focus on AI risk and safety “with an emphasis on advanced systems,” one official said. Officials from the U.S. and China also plan to discuss the work they’re doing in their own countries domestically to address AI risks.

Why?

By oldgraybeard • Score: 4, Insightful Thread
Both governments will do what ever they want behind the others back. And both will point it directly at their people first, because that is who the powers running both governments fear the most.

Google Bringing Project Starline’s ‘Magic Window’ Experience To Real Video Calls

Posted by msmash View on SlashDot Skip
Google announced on Monday that it is preparing to bring its experimental Project Starline videoconferencing technology to the market. The company is collaborating with HP to integrate the system, which creates 3D projections of participants, into existing platforms like Google Meet and Zoom. The move aims to make the technology more accessible for offices and conference rooms, potentially transforming the way people communicate and collaborate remotely.

Beyond FUBAR

By TwistedGreen • Score: 3 Thread

They’re funding useless crap like this while cutting heads from their core teams? What is wrong with this company?

Microsoft Set To Face EU Competition Charges Over Teams Software

Posted by msmash View on SlashDot Skip
The European Commission is set to issue new antitrust charges [non-paywalled link] against Microsoft over concerns that the tech giant is undermining competitors to its videoconferencing app Teams, according to FT. The move comes after Microsoft offered concessions last month, including a global plan to unbundle Teams from other software such as Office, in an attempt to avoid regulatory action.

The EU officials remain concerned that the company’s efforts do not sufficiently ensure fairness in the market, the newspaper said. Rivals worry that Microsoft will make Teams run more compatibly with its own software compared to competitor apps, and that the lack of data portability makes it difficult for existing Teams users to switch to alternatives. The case, which originated from a formal complaint submitted by Slack (now owned by Salesforce) in 2020, is now escalating with the Commission’s impending formal charge sheet against Microsoft.

Yeah sure they’ll unbundle Teams from Office

By Rosco P. Coltrane • Score: 5, Insightful Thread

And everybody will keep using it because everybody knows [Microsof product + Microsoft product} works better than [Microsoft product + competitor]. Because Microsoft will make sure competitor will be less polished, less well integrated, less stable and less convenient than the fully-integrated Microsoft stack running on the Microsoft OS. Only people who actively dislike Microsoft would even bother trying third party Teams replacements, and those people aren’t likely to go with Office to begin with.

Microsoft has done that many times in the past and it got them to the monopolistic position they’ve been occupying since the 90’s.

Does Anybody Like Teams?

By NoMoreACs • Score: 3 Thread

At my last job, we had a buyout, and the (Clueless) new Owner was a Teams Fanatic, to the point of being yelled at for forgetting that all internal communication had to go through Teams.

Nobody in our Office liked it (and not because it was “different”; but because it was excreble).

Nobody else I know has anything good to say about it, either.

So, who (besides my former boss), actually likes (rather than is just forced to use!), Teams, and Why?

Re:Slack Welcomes Competition

By UnknowingFool • Score: 4, Interesting Thread
As someone who uses Slack even though Teams was available, MS is doing everything they can to force us to use Teams. For example, when my group has to share any Office document we have to use Teams. That literally is the only thing I use Teams for these days. I don’t use it to teleconference (we use Zoom). I don’t use it to message (we use Slack). Without bundling, we would never use Teams.

Squarespace To Go Private in $6.9 Billion Deal With Permira

Posted by msmash View on SlashDot Skip
Squarespace said on Monday it has agreed to be taken private by private equity firm Permira in an all-cash deal valued at approximately $6.9 billion. Under the terms of the agreement, Squarespace stockholders will receive $44.00 per share in cash, representing a premium of about 29% over the company’s 90-day volume weighted average trading price.

Upon completion of the transaction, Squarespace will become a privately held company. Founder and CEO Anthony Casalena will continue to lead the business and be one of the largest shareholders following the deal. “Squarespace has been at the forefront of providing services to businesses looking to establish themselves online for more than two decades. We are excited to continue building on that foundation, and expanding our offerings, for years to come,” said Casalena in a statement.

“We are thrilled to be partnering with Permira on this new leg of our journey, alongside our existing long-term investors General Atlantic and Accel, who strongly believe in the future of Squarespace,” he added.

The Enshittification

By Forty Two Tenfold • Score: 3, Informative Thread
will continue.

Re:You’d be an idiot to be a public company today

By laughingskeptic • Score: 5, Interesting Thread
So … trade unreasonable shareholder expectations for unreasonable debt? And what are these crushing financial rules and regulations? I have been part of 3 companies going public and the reporting requirements for a public company cost less than $1M a year to do correctly which is less than 0.4% tax on revenues to be public for a company like Squarespace with $270M in revenues. The tax on having a CEO like Anthony Casalena is 33%.

There are plenty of companies that shouldn’t be public, but what is going here is Anthony Casalena has plans, and those plans do not include risking giving up the control of the company that he has had for over 20 years. He wants OPM to execute his plans rather than selling some of his at-face-value $1.8B shares or issuing new shares which would dilute him. There is a another deal that is going to follow this one in $1B range. What is he going to buy that he could not get with a stock deal? Automattic?

Abandon Ship

By StormReaver • Score: 3 Thread

If you’re a Squarespace employee, now is a good time to start looking for a new job. Private Equity goes hand in hand with massive layoffs.

Squarespace is horrible

By TheMiddleRoad • Score: 3 Thread

About to do my fifth interaction with support without my email issues being solved. Fuck Google for transferring my domains to these cunts.

How Microsoft Employees Pressured the Company Over Its Oil Industry Ties

Posted by EditorDavid View on SlashDot Skip
The non-profit environmental site Grist reports on “an internal, employee-led effort to raise ethical concerns about Microsoft’s work helping oil and gas producers boost their profits by providing them with cloud computing resources and AI software tools.” There’s been some disappointments — but also some successes, starting with the founding of an internal sustainability group within Microsoft that grew to nearly 10,000 employees:
Former Microsoft employees and sources familiar with tech industry advocacy say that, broadly speaking, employee pressure has had an enormous impact on sustainability at Microsoft, encouraging it to announce industry-leading climate goals in 2020 and support key federal climate policies.

But convincing the world’s most valuable company to forgo lucrative oil industry contracts proved far more difficult… Over the past seven years, Microsoft has announced dozens of new deals with oil and gas producers and oil field services companies, many explicitly aimed at unlocking new reserves, increasing production, and driving up oil industry profits

As concerns over the company’s fossil fuel work mounted, Microsoft was gearing up to make a big sustainability announcement. In January 2020, the company pledged to become “carbon negative" by 2030, meaning that in 10 years, the tech giant would pull more carbon out of the air than it emitted on an annual basis… For nearly two years, employees watched and waited. Following its carbon negative announcement, Microsoft quickly expanded its internal carbon tax, which charges the company’s business groups a fee for the carbon they emit via electricity use, employee travel, and more. It also invested in new technologies like direct air capture and purchased carbon removal contracts from dozens of projects worldwide.

But Microsoft’s work with the oil industry continued unabated, with the company announcing a slew of new partnerships in 2020 and 2021 aimed at cutting fossil fuel producers’ costs and boosting production.
The last straw for one technical account manager was a 2023 LinkedIn post by a Microsoft technical architect about the company’s work on oil and gas industry automation. The post said Microsoft’s cloud service was “unlocking previously inaccessible reserves” for the fossil fuel industry, promising that with Microsoft’s Azure service, “the future of oil and gas exploration and production is brighter than ever.”

The technical account manager resigned from the position they’d held for nearly a decade, citing the blog post in a resignation letter which accused Microsoft of “extending the age of fossil fuels, and enabling untold emissions.”

Thanks to Slashdot reader joshuark for sharing the news.

Aristocracy. Aristocracy never changes

By Luckyo • Score: 5, Insightful Thread

How dare they allow poor people to get access to cheap energy that couldn’t get it before, the founding block for elevating themselves out of poverty?

They should forever be sucking at the teat of the aid agency, to which proud microsoftie very publicly donates to get status among his other high class peers who all obviously fly to their vacations several times a year.

Seriously the amount of hypocrisy among Greens never ceases to amaze me. People who’s lives are so hilariously carbon intensive we could uplift entire families out of poverty if they halved their trips to vacations… actively seek to damage and destroy ways to provide cheap energy to the poor. While using it as a status symbol among others in their peer group who are just as wasteful.

Truly, aristocracy hasn’t changed a bit. It’s all the same “we have benevolent goals, and we’re willing to sacrifice a lot of poor to get to them”.

Micro$oft

By phantomfive • Score: 5, Insightful Thread
Imagine working for Microsoft for 10 years before realizing they were unethical. When the chairman of the board of your company is hanging out with Jeffrey Epstein after he was convicted.

Re:Aristocracy. Aristocracy never changes

By Rhys • Score: 4, Interesting Thread

Citation needed.

I especially like how you ignore that people will die and lose their homes in the “x% off that growth” you cite.

Sabotaging US helps world-wide evil

By mi • Score: 4, Informative Thread

While the West is busy blasting its own feet off, profits of regimes like Russia keep growing. Though they had a dip in 2023, their sales are recovering now, despite all the war-related sanctions.

America became a net-exporter of oil under Trump — achieving the energy-independence, that politicians have talked about for decades. But Biden reversed that trend immediately upon taking office.

This was Biden’s campaign promise — to the lunatics described in TFA — and he made good on it. Predictably, fuel-prices went up, and — only a few months later — the same Biden Administration started asking OPEC to increase production.

Russia had a windfall that year as well. To deal with the price spike, the collective “Biden” sold off nearly half of the US “strategic reserves” and then even lifted sanctions against Venezuela..

American Communists — and sympathizers — do their best sabotaging American fuel-production. They don’t achieve a reduction in world-wide fuel consumption — which reduction is their ostensible goal. But they do achieve higher cost of living for Americans, loss of profits by American companies — and increased profits by the likes of Putin and Maduro. Which profits those dictators turn into wars of aggression.

Whether such consequences of the actions by American Communists are honestly unintended or deliberate, we ought to strip these people from power.

Re:Sabotaging US helps world-wide evil

By Kernel Kurtz • Score: 4, Informative Thread

Whether such consequences of the actions by American Communists are honestly unintended or deliberate, we ought to strip these people from power.

I agree. And that includes all the Putin/KGB ass kissers in the GOP.

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: 5, Insightful 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: 5, 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.

Replace “OpenAI” with “MicrosoftAI”

By Anonymous Coward • Score: 5, Insightful Thread

Whenever you see “OpenAI”, replace the name with “MicrosoftAI”, and then see if that changes how you view what was said. If so, you now know you have been tricked by the word “open”.

Re:give it a rest

By Rosco P. Coltrane • Score: 4, Funny Thread

You don’t understand: we had more than 3 non-AI stories in a row. No news outlet worth its salt lets more than 2 hours pass without talking about AI in 2024!

So Slashdot used whatever material they had on hand to correct that intolerable slip. Expect this interview to be milked again in 2 hours.

Re:Musk 2.0

By Freischutz • Score: 5, Insightful Thread

This guys sounds worse than Elon Musk. Whoever falls for his shit, highly deserves whatever will happen to them. Will people never learn not to listen to snake oil sellers?

Judging by how Trump is doing in the presidential election polls that does not seem likely.

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: 5, Insightful Thread

No pedestrians, bicycles or horse wagons.

In theory no stop is required

By LindleyF • Score: 5, Insightful 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.

Or motorbikes

By Viol8 • Score: 5, Interesting Thread

Many people forget that these are a popular form of transport , particularly in the far east where they outnumber cars 10 to 1 at least.

A self drive motorbike is an absurd idea so unless motorbikes are banned in this brave new world of self driving vehicles, the techbro fantasy of robot vehicles neatly intersecting on computer controlled roads will remain just that - a fantasy.

Re:Public transport

By iAmWaySmarterThanYou • Score: 4, Insightful Thread

Because as has been discussed countless times, public transport doesn’t go to/from where people need and sucks if you need to carry more than a small bag. Public transport has very few ideal use cases and countless less than ideal or entirely useless cases.

The idea that my 85 year old mom is going to walk 3 blocks, wait for a bus, switches busses 3 times, then walk 3 more blocks and then reverse the process to get home from her cancer treatment is ridiculous. Maybe she should ride a bike?

Healthy people with limited use cases forget they are not the norm.

Re:Sure, there are only cars in the traffic

By AmiMoJo • Score: 5, Insightful Thread

We used to have these “smart” traffic lights. The had a sensor that could tell when a car was getting near or waiting. The sensor could be in the road or mounted on the light (e.g. radar).

They were particularly good at intersections where one direction was much busier than the others. The busy one could get a permanent green, until someone was actually waiting at the other. Or at the very least, as soon as one road cleared, the lights could change instead of being on a timer and waiting for nobody.

I’m not sure why we stopped using them. Probably cost.

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”.

Re:gas = renewables

By Anonymous Coward • Score: 4, 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: 5, 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.

Re:Australia wil not go the way of Germany

By Anonymous Coward • Score: 5, Insightful Thread

Everything you just said was a story you tell yourself about why the justice you believe in isn’t manifest in the world.

We’re all sorry… but you’re just inventing an enemy. There is no singular way ‘the west’ thinks. That’s not a weakness in practice.

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, Informative 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: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!

Re:Linux always make me happy…

By slack_justyb • Score: 4, Insightful Thread

I just wish the desktop wasn’t so fragmented

I disagree. The fragmentation is the best aspect of Linux. I don’t want a one systemd to rule them all, I want multiple tools that people can select for their application. I don’t want a wayland that will bring them all. I want multiple display servers that each person picks because it suits their needs. I don’t a Gnome desktop to in the the darkness bind them. I want people who love E16, KDE, XFCE, WindowMaker, i3, and so on to be able to select what they want.

I wholly disagree. I think the people who want sysvinit scripts and the folks who want units from systemd are all awesome. I love the Gnome desktop, the KDE desktop, the titling managers, and the various litestep/gnustep out there. I think the RedHat, the SuSE, the Ubuntu, Slackware, Pop_OS, and so forth are amazing.

I think the wide variety out there makes FOSS be it Linux, GNU Hurd, or any of the BSDs the best place for everyone. Because there isn’t a “Linux Desktop (tm)", the Linux desktop is whatever you make it. That’s different than anything else out there and is the most compelling feature of open source in my most humble opinion.

I think the hate for systemd is unfounded because we still have sysvinit in a whole lot of distros. I think the hate for wayland is unfounded because we still have lots of Xorg and hells bells, we still have directfb. I think the hate for Gnome is unfounded because we still have more DEs than people actually know about. All the hate that I hear on Slashdot or the bemoaning of “whatever someone thinks is going to replace their favorite tech” it’s all unfounded. Shit we still have Delphi and COBOL compilers, I know, that’s how I make a bit of my bread and butter. Anyone thinking X11 dies within their lifetime is just wanting to yell at clouds. Because so long as people want to use something, it’s there to be used. WindowMaker is still out there, E16 you can compile and run it on directfb today, there’s people wanting to remake the IRIX 4dwm, there’s folks writing kernels in pure Rust, we’ve got so many various init systems out there, more flavors of firefox pre and post XUL, and if you want to fire up an IRC server or heck you want to do what the cool kids are doing and fire up a finger server, we’ve got all of that covered too. That to me is the best thing about all of this.

No I don’t think the fragmentation is a bad thing. I think it’s one of the biggest strengths of open source.

Re:Linux always make me happy…

By drinkypoo • Score: 4, Insightful Thread

I think the hate for systemd is unfounded because we still have sysvinit in a whole lot of distros.

That doesn’t make anything like sense.

sysvinit is good. It is simple and it works.

systemd is bad. It is complicated and when it goes wrong you can’t figure out what is wrong without using the debugger.

Hate for systemd is logical because sysvinit still works better than systemd, but systemd has infected all the major distributions and we have to deal with it in the real world where we get forced to work with them.

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: 4, Interesting 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.

April Fool’s

By systemd-anonymousd • Score: 3 Thread

Remember, censorship on Reddit was considered such an impossible future that one of their April Fool’s jokes was to say they were giving mods the ability to delete comments.

Many years later Reddit censored that very blog post so people wouldn’t be able to see how things have changed.

https://web.archive.org/web/20…

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…

LOL, stopped reading at this…

By p51d007 • Score: 3 Thread
I personally think the iPhone is like the greatest piece of technology humanity has ever made.

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

By dfm3 • Score: 5, 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

Why didn’t they ask boxers or briefs?

By chas.williams • Score: 3 Thread
You know, really hard-hitting journalism.

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

Earth-Sized?

By rossdee • Score: 3 Thread

From the Headline:

Earth-Sized Planet

From TFS:

  a planet that’s twice as big as Earth

I guess out there, 1 = 2

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: 4, Interesting 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: 5, Funny 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 — :-)

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: 5, 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.

Nostalgie de la boue

By dsgrntlxmply • Score: 4, Interesting Thread
As a builder of model planes and rockets in my youth, it was nostalgic and humorous to see his out-the-car-window method for testing stability (center of pressure vs center of mass). At an age with no direct access to cars, we did this by tying a string around the rocket tube at the balance point, then swinging it around to see if it tumbled. My first programming exercise was to mechanize the Barrowman equations for center of pressure estimation, on a Wang programmable calculator.

Is Dark Matter’s Main Rival Theory Dead?

Posted by EditorDavid View on SlashDot
“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.