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Automatic differentiation can be incorrect

news.ycombinator.com Christopher Rackauckas 2025-09-18 14:01:35

ISCL Seminar Series The Numerical Analysis of Differentiable Simulation: How Automatic Differentiation of Physics Can Give Incorrect Derivatives Scientific machine learning (SciML) relies heavily on automatic differentiation (AD), the process of constructing gradients which include machine learning integrated into mechanistic models for the purpose of gradient-based optimization. While these differentiable programming approaches pitch an idea of “simply put the simulator into a loss function a

Topics: ad differentiable greater numerical sciml

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An Afternoon at the Recursive Café: Two Threads Interleaving

news.ycombinator.com Unknown 2025-09-15 01:44:39

An Afternoon at the Recursive Café: Two Threads Interleaving Scene: A cozy coffee shop called "Lambda Grounds" where the Wi-Fi password is "currying123" and the baristas wear t-shirts with arrows pointing right. ALEX, a curious philosophy student, sits across from CLAUDE, a mysterious figure who might be an AI, a very pale computer science professor, or possibly a sentient stack overflow answer. Steam rises from their cups in patterns that look suspiciously like lambda calculus expressions. AL

Topics: alex claude computation consciousness just

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Automatic Differentiation Can Be Incorrect

news.ycombinator.com Christopher Rackauckas 2025-09-19 00:01:35

ISCL Seminar Series The Numerical Analysis of Differentiable Simulation: How Automatic Differentiation of Physics Can Give Incorrect Derivatives Scientific machine learning (SciML) relies heavily on automatic differentiation (AD), the process of constructing gradients which include machine learning integrated into mechanistic models for the purpose of gradient-based optimization. While these differentiable programming approaches pitch an idea of “simply put the simulator into a loss function a

Topics: ad differentiable greater numerical sciml

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Something Weird Is Going on With the Sun, Scientists Find

futurism.com Unknown 2025-09-20 03:05:55

The Sun — usually so predictable — is exhibiting some surprising behavior and that has scientists very intrigued. Astronomers had predicted that our host star was entering a period of relative quiet back in 2008, but NASA scientists have published a new study in The Astrophysical Journal Letters that found that the Sun has instead defied expectations by becoming more active, with increased sunspots and solar flares. "All signs were pointing to the Sun going into a prolonged phase of low activi

Topics: activity cycle scientists solar sun

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How to measure the returns on R&D spending

technologyreview.com David Rotman 2025-09-21 23:00:00

Sure, it’s easy to argue for the importance of spending on science by pointing out that many of today’s most useful technologies had their origins in government-funded R&D. The internet, CRISPR, GPS—the list goes on and on. All true. But this argument ignores all the technologies that received millions in government funding and haven’t gone anywhere—at least not yet. We still don’t have DNA computers or molecular electronics. Never mind the favorite examples cited by contrarian politicians of se

Topics: funding government innovation science technologies

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Netflix: The 23 Best Sci-Fi TV Shows To Watch Right Now

cnet.com See Full Bio 2025-09-22 00:00:05

So you're looking for a solid sci-fi TV show to add to your Netflix binge list? Well, friend, you've come to the right place. The streamer has long-established itself as the gold standard for genre entertainment. If you're anything like me, you've already tackled the platform's big hit series like Stranger Things and Black Mirror. You want something else -- and I put together a list that will surely scratch that genre itch. Sci-fi fans are passionate and can also be a fickle bunch. It makes sen

Topics: follows genre netflix sci series

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This Giant Subterranean Neutrino Detector Is Taking On the Mysteries of Physics

wired.com Sandro Iannaccone 2025-09-22 00:30:00

Located 700 meters underground near the city of Jiangmen in southern China, a giant sphere—35 meters in diameter and filled with more than 20,000 tons of liquid—has just started a mission that will last for decades. This is Juno, the Jiangmen Underground Neutrino Observatory, a new, large-scale experiment studying some of the most mysterious and elusive particles known to science. Neutrinos are the most abundant particles in the universe with mass. They are fundamental particles, meaning they d

Topics: experiment juno neutrino neutrinos oscillate

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Scientists Gather to Confront the Doomsday Risks of ‘Mirror Life’

gizmodo.com Ellyn Lapointe 2025-09-23 08:10:48

The prospect of creating “mirror life”—synthetic cells made from molecules that are mirror images of those found in nature—remains completely hypothetical. Still, the potential consequences are so dire that experts from around the world are gathering to discuss how to prevent the worst-case scenario. This week, scientists, engineers, policymakers, and other stakeholders will convene in Manchester, U.K., for Engineering and Safeguarding Synthetic Life 2025. This annual international conference e

Topics: cells image life mirror scientists

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When Your Father Is a Magician, What Do You Believe?

news.ycombinator.com The Mit Press Reader 2025-09-21 01:28:15

When Your Father Is a Magician, What Do You Believe? A childhood spent under the spell of sleight-of-hand taught me skepticism, curiosity, and the habit of looking beneath appearances. By: Richard Cytowic A↑ A↓ Off Bright Dark Blues Gray BeeLine Reader uses subtle color gradients to help you read more efficiently. My earliest lessons in observation came not from a laboratory but in the living room, with my father in his tuxedo and top hat. To everyone else, he was “Big Ed,” a larger-tha

Topics: appearances father magician science taught

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Asciinema CLI 3.0 rewritten in Rust, adds live streaming, upgrades file format

news.ycombinator.com Unknown 2025-09-25 11:06:30

3.0 Published on 15 Sep 2025 by Marcin Kulik I’m happy to announce the release of asciinema CLI 3.0! This is a complete rewrite of asciinema in Rust, upgrading the recording file format, introducing terminal live streaming, and bringing numerous improvements across the board. In this post, I’ll go over the highlights of the release. For a deeper overview of new features and improvements, see the release notes and the detailed changelog. First, let’s get the Rust rewrite topic out of the way.

Topics: asciinema org recording server stream

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Fringe Movement Claims the Entirety of Modern Physics Is Wrong

futurism.com Unknown 2025-09-26 07:00:48

It's one thing when a respected scientist has a novel idea of what dark matter or dark energy might be, or what could explain spooky quantum phenomena like entanglement and superpositions. But the wonders of the internet has brought an entire economy built on outrage and conspiracy theories, enabling even the most crackpot grifters and fringe scientists to reach a wide audience and easily make a quick buck. We've all heard them rage against vaccines and seed oils, but one of their buzziest clai

Topics: dark physics science theory weinstein

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Apple TV Plus: The 14 Best Sci-Fi TV Shows You Should Stream Now

cnet.com See Full Bio 2025-09-26 08:00:04

So, you're an Apple TV Plus subscriber looking for worthwhile sci-fi TV shows to watch. You've already binged every episode of Severance. What should you dive into next? Apple's streaming service (which just raised its monthly price) feels like an exclusive place. The majority of the original programs on the platform premiere without much promotion, instead being left for you to discover on your own. With so many streaming shows vying for your attention, the perfect title can get lost. Do you

Topics: apple plus sci series tv

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Feds try to dodge lawsuit against their bogus climate report

arstechnica.com Unknown 2025-09-24 17:58:03

While the Trump administration has continued to refer to efforts to avoid the worst impacts of climate change as a scam, it has done almost nothing to counter the copious scientific evidence that demonstrates that climate change is real and doing real damage to the citizens of the US. The lone exception has been a draft Department of Energy report prepared by a handful of carefully chosen fringe figures that questioned the mainstream understanding of climate change. The shoddy work and questiona

Topics: change climate committee report science

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Department of Energy gets rid of climate skeptics group to dodge lawsuit

arstechnica.com Unknown 2025-09-27 00:58:03

While the Trump administration has continued to refer to efforts to avoid the worst impacts of climate change as a scam, it has done almost nothing to counter the copious scientific evidence that demonstrates that climate change is real and doing real damage to the citizens of the US. The lone exception has been a draft Department of Energy report prepared by a handful of carefully chosen fringe figures that questioned the mainstream understanding of climate change. The shoddy work and questiona

Topics: change climate committee report science

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Is Your Gut in Trouble? 5 Warning Signs You Shouldn't Ignore

cnet.com See Full Bio 2025-09-28 04:00:05

The trillions of microbes that live in your gut are likened to "little pets living inside your intestinal tract." Or at least, that's how Gail Cresci, a microbiome expert at the Cleveland Clinic, describes it. But they do far more than help digest food. They also support your immune system, regulate inflammation, and produce essential compounds like vitamins and hormones that keep your body running smoothly. Because your gut plays such a big role in your overall health, it's important to recogn

Topics: cresci gut health help microbiome

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NASA found clues of life on Mars, but budget cuts threaten future missions

theverge.com Georgina Torbet 2025-09-29 16:47:01

An exciting discovery on Mars is being overshadowed by turmoil at NASA, with budget cuts threatening to destroy a scientific legacy that has been built over decades. Yesterday, the agency shared a finding, published in Nature, of potential biosignatures identified by the Mars Perseverance rover in a 3.5 billion-year-old rock. “This very well could be the clearest sign of life that we’ve ever found on Mars,” said Transportation Secretary and Acting NASA Administrator Sean Duffy in a press confe

Topics: agency exploration mars nasa science

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The Download: Trump’s impact on science, and meet our climate and energy honorees

technologyreview.com Rhiannon Williams 2025-09-30 16:10:00

Every year MIT Technology Review celebrates accomplished young scientists, entrepreneurs, and inventors from around the world in our Innovators Under 35 list. We’ve just published the 2025 edition. This year, though, the context is different: The US scientific community is under attack. Since Donald Trump took office in January, his administration has fired top government scientists, targeted universities and academia, and made substantial funding cuts to the country’s science and technology

Topics: abate read science story technology

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The Download: introducing our 35 Innovators Under 35 list for 2025

technologyreview.com Rhiannon Williams 2025-10-07 16:10:00

The world is full of extraordinary young people brimming with ideas for how to crack tough problems. Every year, we recognize 35 such individuals from around the world—all of whom are under the age of 35. These scientists, inventors, and entrepreneurs are working to help mitigate climate change, accelerate scientific progress, and alleviate human suffering from disease. Some are launching companies while others are hard at work in academic labs. They were selected from hundreds of nominees by e

Topics: 35 human scientific technology young

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Clarity or accuracy – what makes a good scientific image?

news.ycombinator.com Frankel 2025-10-03 16:02:40

Flashes of Brilliance: The Genius of Early Photography and How It Transformed Art, Science, and History Anika Burgess W. W. Norton (2025) As someone who has spent a career visualizing science, Flashes of Brilliance felt like reading a love letter to the power of the photographic image. This beautifully written book, by writer and photo editor Anika Burgess, is a thoughtful, personal and witty meditation on how imagery does much more than just document a scene. Will AI jeopardize science photog

Topics: burgess early image images science

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Pocket Scion is a synth you play with plants

theverge.com Terrence O'Brien 2025-10-07 17:00:00

is the Verge’s weekend editor. He has over 18 years of experience, including 10 years as managing editor at Engadget. Posts from this author will be added to your daily email digest and your homepage feed. A few years ago, artist Modern Biology became a viral sensation when he posted videos of himself controlling a modular synth with mushrooms on TikTok. Pocket Scion gives anyone similar capabilities, but without having to spend thousands of dollars on a Eurorack rig – and in a much more porta

Topics: control controlling pocket scion synth

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The Lore and Legend of SC’s SCinet

computer.org Joshua Roller 2025-10-08 00:15:32

Every year at the high-performance computing (HPC) conference SC, a team of more than 200 dedicated volunteers from upwards of 80 organizations come together to develop SCinet, one of the world’s fastest temporary networks. As a co-sponsor of SC, the IEEE Computer Society (CS) plays a big role in SCinet, engaging members from its Technical Community on High Performance Computing (HPC) to support the annual massive-scale network development. Developed to support the network needs of SC exhibitor

Topics: hpc network new scinet volunteers

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Should AI Get Legal Rights?

wired.com Kylie Robison 2025-10-10 20:05:56

In the often strange world of AI research, some people are exploring whether the machines should be able to unionize. I’m joking, sort of. In Silicon Valley, there’s a small but growing field called model welfare, which is working to figure out whether AI models are conscious and deserving of moral considerations, such as legal rights. Within the past year, two research organizations studying model welfare have popped up: Conscium and Eleos AI Research. Anthropic also hired its first AI welfare

Topics: ai conscious model people welfare

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What is it like to be a bat?

news.ycombinator.com Unknown 2025-10-12 11:48:27

1974 philosophy paper by Thomas Nagel Thomas Nagel argues that while a human might be able to imagine what it is like to be a bat by taking "the bat's point of view", it would still be impossible "to know what it is like for a bat to be a bat". "What Is It Like to Be a Bat?" is a paper by American philosopher Thomas Nagel, first published in The Philosophical Review in October 1974, and later in Nagel's Mortal Questions (1979). The paper presents several difficulties posed by phenomenal consci

Topics: bat consciousness experience nagel subjective

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OpenAI is hiring 'AI-pilled' academics to build a scientific discovery accelerator

zdnet.com Webb Wright 2025-10-13 00:16:05

Andriy Onufriyenko/Moment via Getty Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways OpenAI for Science was announced in a Tuesday X post. Its goal is to accelerate scientific discovery through AI. The post suggests GPT-5 will play a key role in the effort. Artificial intelligence researchers have long dreamed of automating the process of scientific discovery. Now OpenAI is setting out to turn that vision into reality. The company is launching an initiative call

Topics: ai model openai scientific weil

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What Is It Like to Be a Bat?

news.ycombinator.com Unknown 2025-10-13 12:48:27

1974 philosophy paper by Thomas Nagel Thomas Nagel argues that while a human might be able to imagine what it is like to be a bat by taking "the bat's point of view", it would still be impossible "to know what it is like for a bat to be a bat". "What Is It Like to Be a Bat?" is a paper by American philosopher Thomas Nagel, first published in The Philosophical Review in October 1974, and later in Nagel's Mortal Questions (1979). The paper presents several difficulties posed by phenomenal consci

Topics: bat consciousness experience nagel subjective

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“Mockery of science”: Climate scientists tear into new US climate report

arstechnica.com Unknown 2025-10-14 04:14:42

More than 85 climate scientists declared the Department of Energy’s new climate report unfit for policymaking in a comprehensive review released Tuesday. The DOE’s report cherry-picked evidence, lacked peer-reviewed studies to support its questioning of the detrimental effects of climate change in the US and is “fundamentally incorrect,” the authors concluded. Scientists have accurately modeled and predicted the volume and impact of excess CO2 in the Earth’s atmosphere since the 1970s, when Exx

Topics: climate doe report science scientific

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A Crack in the Cosmos

news.ycombinator.com Colin Wells 2025-10-18 07:11:05

Some time around the year 466 BCE – in the second year of the 78th Olympiad, the Roman naturalist Pliny the Elder tells us – a massive meteor blazed across the sky in broad daylight, crashing to the earth with an enormous explosion near the small Greek town of Aegospotami, or ‘Goat Rivers’, on the European side of the Hellespont in northeastern Greece. Pliny’s younger contemporary, the Greek biographer Plutarch, wrote that the locals still worshipped the scorched brownish metallic boulder, the s

Topics: anaxagoras greek moon science socrates

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Scientists Are Flocking to Bluesky

wired.com Jennifer Ouellette 2025-10-22 20:26:05

Marine biologist and conservationist David Shiffman was an early power user and evangelist for science engagement on the social media platform formerly known as Twitter. Over the years, he trained more than 2,000 early career scientists on how to best use the platform for professional goals: networking with colleagues, sharing new scientific papers, and communicating with interested members of the public. But when Elon Musk bought Twitter in 2022, renaming it X, changes to both the platform’s a

Topics: bluesky platform science shiffman twitter

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23 of the Best Sci-Fi TV Shows Netflix Has to Offer

cnet.com See Full Bio 2025-10-23 16:00:04

So you're looking for a solid sci-fi TV show to add to your Netflix binge list? Well, friend, you've come to the right place. The streamer has long-established itself as the gold standard for genre entertainment. If you're anything like me, you've already tackled the platform's big hit series like Stranger Things and Black Mirror. You want something else -- and I put together a list that will surely scratch that genre itch. Sci-fi fans are passionate and can also be a fickle bunch. It makes sen

Topics: follows genre netflix sci series

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Interdisciplinary Computing and Education for Real-World Solutions

computer.org Jasmine Ang 2025-10-24 22:35:29

An Interview with Prof. Vipin Kumar – 2025 Taylor L. Booth Education Award Recipient Prof. Vipin Kumar, a Regents Professor at the University of Minnesota, has wide-ranging research interests, which touch on several fields that have significant impact worldwide. His leadership as an educator in computer science and his authorship of foundational textbooks have shaped data mining and parallel computing curricula internationally. Below is an in-depth interview on the technologies he has had a han

Topics: ai data parallel partitioning scientific

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Latest Tech News

Automatic differentiation can be incorrect

An Afternoon at the Recursive Café: Two Threads Interleaving

Automatic Differentiation Can Be Incorrect

Something Weird Is Going on With the Sun, Scientists Find

How to measure the returns on R&D spending

Netflix: The 23 Best Sci-Fi TV Shows To Watch Right Now

This Giant Subterranean Neutrino Detector Is Taking On the Mysteries of Physics

Scientists Gather to Confront the Doomsday Risks of ‘Mirror Life’

When Your Father Is a Magician, What Do You Believe?

Asciinema CLI 3.0 rewritten in Rust, adds live streaming, upgrades file format

Fringe Movement Claims the Entirety of Modern Physics Is Wrong

Apple TV Plus: The 14 Best Sci-Fi TV Shows You Should Stream Now

Feds try to dodge lawsuit against their bogus climate report

Department of Energy gets rid of climate skeptics group to dodge lawsuit

Is Your Gut in Trouble? 5 Warning Signs You Shouldn't Ignore

NASA found clues of life on Mars, but budget cuts threaten future missions

The Download: Trump’s impact on science, and meet our climate and energy honorees

The Download: introducing our 35 Innovators Under 35 list for 2025

Clarity or accuracy – what makes a good scientific image?

Pocket Scion is a synth you play with plants

The Lore and Legend of SC’s SCinet

Should AI Get Legal Rights?

What is it like to be a bat?

OpenAI is hiring 'AI-pilled' academics to build a scientific discovery accelerator

What Is It Like to Be a Bat?

“Mockery of science”: Climate scientists tear into new US climate report

A Crack in the Cosmos

Scientists Are Flocking to Bluesky

23 of the Best Sci-Fi TV Shows Netflix Has to Offer

Interdisciplinary Computing and Education for Real-World Solutions

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