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Arnav Das
Arnav Das
@arnav7.bsky.social
My posts here will be a mishmash of personal opinions and smol curious excursions..
2K followers12.7K following1.2K posts
Arnav Das reposted
"The research published today in Science Advances has found that the state of the Pacific Ocean at the beginning of a forecast plays a critical, and often overlooked, role in determining whether long-range predictions of ENSO will be accurate." www.eurekalert.org/news-release...
El Niño/La Niña famously cannot be reliably predicted more than ~6 months in advance due to the "predictability barrier": this is a chaotic system! New research from Australia (CSIRO/UMelb) just showed it *can* sometimes be predicted much earlier, up to a full year! www.science.org/doi/10.1126/...
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A 28 year old man injected himself with mercury. "The patient denied any psychiatric illness and did not disclose the motive for mercury injection." pubmed.ncbi.nlm.nih.gov/42910243/ Surprisingly he didn't get mercury poisoning (yet).
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Network topology shapes consensus and vulnerability in LLM populations arxiv.org/abs/2610.31165
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Now's a good time to repost this. Please share and engage. #TCSSky cstheory.meta.stackexchange.com/questions/31...
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OpenAI has claimed a refutation of the Exponential Time Hypothetis (ETH). Russell Impagliazzo, Mohan Paturi and Ryan Williams (@rrwilliams.bsky.social) have been asked to organize a community-led effort to evaluate this claim. More here: docs.google.com/document/d/1... h/t @gautamkamath.com
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The exponential time hypothesis is apparently false: openai.com/index/buildi...
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Smart isn't the same as aware. And your brain's software is also its hardware. Three reasons why AI is not conscious and perhaps never will be www.nature.com/articles/d41... #neuroscience
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We should not call others lazy—not only because it’s rude, but also because it’s almost impossible to know if someone is actually lazy or not, writes @philosophyminis.bsky.social. What is laziness anyway? A Tibetan Buddhist master explains the three kinds: buff.ly/WXYCh6C
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Ask a group of people a philosophical question and it’s often the case that they'll give conflicting answers to it. We quite naturally interpret this as different people having different intuitions. But that's not the only available explanation...
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A nonconvex problem can sometimes have a convex dual. Toland duality explains how, and also yields the DC algorithm. A simple example shows why this can be useful. https://www.gpeyre.com/blog/2026/10/26/dc-programming-toland-duality/
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The world needs a high-quality, truly open language model. I wrote about why it’s necessary and why it’s easier to build than you might think.
Arnav Das reposted
We had some fairly big updates to tidymodels.org this year. I'm gonna post about them this week! The first thing you might have noticed already is that we now have a dark mode on the website! Every page and element should now work both in light and dark mode! #tidymodels
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Hm. Honestly a bit bewildered by the choice. "And I know how to read a research paper." Reading a scientific paper isn't the expertise required to build real trust by translating, visualizing, critically assessing what's actually happening in practice for laypeople www.statnews.com/2026/09/21/t...
We'd like to welcome to the team our new trust-in-science reporter, @nicholasflorko.bsky.social, and our new D.C. reporter, @margaretmanto.bsky.social! www.statnews.com/new-trust-in...
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AI models tend "to resolve cross-linguistic disagreement by treating the English judgment as authoritative, rather than acknowledging the cross-linguistic inconsistency of human language." What's the problem with that, and what should be done about it?
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Working‑class academics are still struggling to fit in at university theconversation.com/working-clas...
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these pointless chatbots are what journals are literally spending our tax money on because these publishers are leeches off the public purse and then fence off academic outputs into weird systems also Maxwell / Epstein money
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Inclusion is often conditional with "a hidden cost of fitting in" and facing "an unspoken expectation to adapt: to align with dominant norms of speech, behaviour and self-presentation" + creating "distance between who people are and how they feel able to present themselves" that erodes confidence.
Working‑class academics are still struggling to fit in at university theconversation.com/working-clas...
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People with smaller social networks are more likely to use chatbots for companionship This is associated with lower well-being, especially when interactions are intensive & self disclosuring This is based on an analysis of 464,687 messages from 237 users www.nature.com/articles/s41...
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If real love is caused by who the beloved is, *and* should persist, what—if any—changes in the beloved might relax the latter expectation? Cool research by Mikalonyte et al finds a hierarchy: morals > memory > physical appearance … buff.ly/YSrNOlu 1/2
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Politics is largely about identity, and that is something we tend to prioritize over truth. Small wonder our reasoning is impaired if we let politics guide how we think: buff.ly/07uo086
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We’re very excited to be organizing a 1-day workshop on “Recent advances in Regularity Lemmas (with and without calibration)” at Stanford on Tuesday, November 17! Program and details: regularitylemmas.github.io
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God, this is scary. They are killing science in universities and are pretty open about that. What’s unclear is whether they honestly think this is good for science, or consider it to be acceptable collateral damage of hurting universities, or don’t care as long as it funnels money to corporations.
Tyler Cowen interviews OSTP Director Michael Kratsios. A few points of the conversation worth highlighting:
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Getting into the weeds of how “all polls are models” and how statistical prediction blurs with statistical sampling when surveying society.
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For decades we hear women have smaller brains therefore we're stupid (yes, look up the great term for this "neurosexism") — but now it's "crows have a small brain therefore they are smart"? We're winning and have a murder on our side, I guess. Cool.
Crows have brains “in the fast lane,” according to Andreas Nieder, who showed in a new study that they make perceptual decisions twice as fast as primates. #neuroskyence By @sarahthau.bsky.social www.thetransmitter.org/behavior/cro...
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On the same theme, but also on my radar to understand. On the near-optimality of betting confidence sets for bounded means arxiv.org/abs/2310.01547 The e-posterior royalsocietypublishing.org/rsta/article... Bandit Algorithms for Prophet Inequality and Pandora's Box arxiv.org/abs/2211.085...
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If you thought Ben Lamm was a shithead, you underestimated him. He's worse. Genetically engineering any creatures, but dogs especially, to be weapons of war — it's unspeakable. www.forbes.com/sites/amyfel...
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"It is good that we get to hear lived experience voices. But hearing those voices is not enough. We should listen to them without prejudice & create safe and inclusive environments where they make a difference to mental health research & mental healthcare provision." lisatpg.substack.com... #philsky
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"Grief is an affliction physical and material. It roils the gut and stops the sleep. It can put a tremble in the limbs, a quiver in the voice, a restless agitation run all through. It makes the knees want to let go, the body just to sink...." dailynous.com/2026/10/22/d...
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📚 Now reading: Sarah Klein (2026). Modeling as Theater and Other Questionable Research Practices Compiling some snippets here. Check out the full paper 📝 muse.jhu.edu/article/1001... Will also add this thread to my page here: irisvanrooijcogsci.com/2026/02/15/%... (h/t @olivia.science ) 1/🧵
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Classic research by Tversky and Shafir suggests it is more likely that a choice will be delayed or that new options will be sought, the more conflict there is between the present options: buff.ly/vVhs3Zb
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