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Phil Steitz

@psteitz.bsky.social
179 followers 148 following 447 posts

Animal lover, trail runner, mathematician, product and tech leader, open source developer

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Reposted by Phil Steitz
Isabel Drost-Fromm @mainec.bsky.social · 02/10/2026
Interested in teaching your organisation to use open source collaboration methods internally and thus prepare to seamlessly work with the upstream open source projects your business is built on? Join me in attending this year's InnerSource summit. innersourcecommons.org/events/isc-2...
innersourcecommons.org
InnerSource Summit 2026
This is a fully virtual event - join online from anywhere in the world.
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Phil Steitz @psteitz.bsky.social · 29/09/2026
Cascade of stupidity worthy of AI bro today. Decided to run in the rain. Left glasses at home (worthless in rain). Went off trail (trail == wash in AZ). Picked up pace to stay warm. Boom! Probably broke my foot :(
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Phil Steitz @psteitz.bsky.social · 27/09/2026
www.youtube.com/watch?v=5YpK... There are some nice examples in this talk showing how a coherent concept of "presence" is difficult today. The concept that she attributes to Noe of "presence as availability" made me chuckle about how badly we abuse both of those terms in collaboration technology.
youtube.com
Presence-As-Absence and Intercorporeality: Being-At-A-Distance – Robin Zebrowski
YouTube video by socialBRIDGES Archive
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Phil Steitz @psteitz.bsky.social · 26/09/2026
Jev is demonstrating the obvious. Solving simple problems in slop-space with fake humans is laughably wasteful. Years from now, we will look back at the grotesque over-dimensionality of LLM agent representations and crack up.
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Phil Steitz @psteitz.bsky.social · 23/09/2026
www.interconnects.ai/p/the-curren... One more time with feeling. Open source always wins.
interconnects.ai
The current balance of power in open models
The expanded form of a testimony I prepared for Congress.
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Camille Fournier @skamille.themanagerswrath.com · 20/09/2026
If you want a Sunday morning longread I wrote up a rough version of the talk I gave at LDX3 this week on the Manager's Path in the Age of AI skamille.medium.com/the-managers...
skamille.medium.com
The Manager’s Path in the Age of AI
This week, I gave a talk at LDX3 New York. When they asked me to speak and asked me for a topic, I said that it was probably time I finally…
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Phil Steitz @psteitz.bsky.social · 20/09/2026
share.google/lLm3xjtB3rSa... One of my fondest memories of grad school was when a luminary gave an amazing talk and I asked him to clarify some definitions afterward. He said, “I didn’t come here to show you the work. I came to show you the magic.”
share.google
If math is more than proof, we need to better celebrate the rest of it
[This is a guest post by Grant Sanderson. This blog post was initially written in a different file format and converted using AI. — T.] A sentiment echoing throughout the mathematics communit…
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Reposted by Phil Steitz
Torsten Curdt @tcurdt.bsky.social · 17/09/2026
I just found typesafe.ai I still do not have enough details to decide what to think of it. But the classifier interface feels so much more suited to a lot of tasks that people somehow stuff into the LLM pipeline. It feels a lot more like classic machine learning.
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Reposted by Phil Steitz
David Picard @davidpicard.eurosky.social · 14/09/2026
New year, new semester, new course, new textbook: davidpicard.github.io/mldl/mldl-bo... 👀 Still in draft form, but not in a bad shape.
davidpicard.github.io
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Ted Dunning @bsky.tdunning.com · 14/09/2026
I made an comment the other day about anomaly detection in sporadic events. See the O'Reilly book for a more complete writeup. But here is the code that demonstrates the method: github.com/tdunning/int... www.oreilly.com/library/view... @de6u99er.bsky.social #anomalydetection
github.com
GitHub - tdunning/interval_anomaly: A demonstration that finds event drop-out anomalies in events with highly variable, but predictable rates
A demonstration that finds event drop-out anomalies in events with highly variable, but predictable rates - tdunning/interval_anomaly
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Terence Tao @teorth.bsky.social · 11/09/2026
A group of 25 Fields Medalists, including myself, have made a joint declaration on Math and AI: mathandai.org . We welcome additional signatories. See also this article in the Economist announcing the declaration: www.economist.com/science-and-...
mathandai.org
Declaration — Math and AI
Read the declaration and add your name.
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Boston Review @bostonreview.bsky.social · 09/09/2026
“Mathematics only makes sense as a gift economy. It has no trade secrets. Substituting a monetizable ersatz culture for the one evolved through historical experience is a particularly insidious form of knowledge collapse.” Mathematician Michael Harris on the AI companies coming for math:
bostonreview.net
Knowledge Collapse
AI companies are racing to mechanize mathematics. Where does that leave human understanding?
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Dave Karpf @davekarpf.bsky.social · 08/09/2026
This post is basically my attempt to get everyone I mostly agree with to maybe stop arguing so much. There are actual villains out there for us to fight. I am sure this one blog post will solve everything.
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Marisa Kabas @marisakabas.bsky.social · 08/09/2026
who wants to go in on this together?
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The Transmitter @thetransmitter.bsky.social · 07/09/2026
I fear that placing too much emphasis on a specific interpretation of dimensionality, or treating dimensionality as an end-all quantification of some aspect of neural computation, may lead us down the wrong path, writes @mattperich.bsky.social. #neuroskyence www.thetransmitter.org/neural-dynam...
thetransmitter.org
Dimensionality—neuroscience’s red herring?
Placing too much emphasis on a specific interpretation of dimensionality may lead neuroscience down the wrong path.
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Phil Steitz @psteitz.bsky.social · 05/09/2026
I went outside with my new glasses today. Saw a spot on the periphery. Shook my head and it did not go away. Absolutely a feature, not a bug. Now let’s see if I can live with it.
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Reposted by Phil Steitz
David Picard @davidpicard.eurosky.social · 05/09/2026
Every. Single. Day. I think about this post every single day.
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David Picard @davidpicard.eurosky.social · 05/09/2026
😭
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Phil Steitz @psteitz.bsky.social · 03/09/2026
Long, but worth reading www.irregular.com/research/end... But I think he is missing two key concepts: 1. Defense has an inherent information advantage that can be aggressively exploited. 2. Innovation in compensating controls is a big missing example from the differential defensive arsenal.
irregular.com
The End-State Fallacy: Where Is AI Security Headed? - Irregular
A look at the trajectory of AI security: what frontier models can already do on real systems, how quickly offensive capability is industrializing, and why AI is becoming not just a tool but a target a...
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Marc Coutanche @marccoutanche.bsky.social · 01/09/2026
We are recruiting an Assistant Professor in Cog Neuro/Cog Psych to join us at Rice! Please spread the word! apply.interfolio.com/192080
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Phil Steitz @psteitz.bsky.social · 31/08/2026
Here again, guardrails are too late. You need governance *in context* engineering.moniepoint.com/what-i-learn...
engineering.moniepoint.com
What I Learned About Ai Trust From Reconciling Over 100 Billion Transactions | Moniepoint | Engineering
\nOver a month ago, I sat on a panel at\n AI Everything MEA in Cairo\n, discussi...
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Phil Steitz @psteitz.bsky.social · 29/08/2026
Who blooms at 112 degrees? Compass cactus!
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Reposted by Phil Steitz
Roger Mansuy @roger-mansuy.bsky.social · 22/08/2026
Le livre "Introduction aux graphes aléatoires" (Calvage-et-Mounet, 2020) est épuisé depuis plus d'un an. Comme je reçois régulièrement des courriers sur ce texte, j'ai rédigé une seconde édition que je place en accès libre sur: www.rogermansuy.fr/pdf/GraphesA... Bonne lecture!
Page de titre de la seconde édition du livre "Introduction aux graphes aléatoires"
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Phil Steitz @psteitz.bsky.social · 19/08/2026
Unsettling indeed. One thing that jumped out at me with great irony. The example of “LLM-speak” popularizing Plato’s “dividing reality at the joints” quote. Following that quote in the Phaedrus is a rant on the difference between sounding good (rhetoric) and seeking real meaning (dialectic).
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Phil Steitz @psteitz.bsky.social · 18/08/2026
Oh man, thanks so much @mainec.bsky.social ! I just got some of those books and my hand is thinking way way good!
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Phil Steitz @psteitz.bsky.social · 15/08/2026
Two things I love about this: 0) the data product innovation framework is excellent. 1) it shows that the morons in the White House have had zero impact on the commitment to availability, accuracy and confidentiality in the US Census Bureau. Many thanks for that. share.google/0wHY35cZjGss...
share.google
Enabling Innovation by Putting Statistical Products First
Federal statistical systems are undergoing rapid transformation due to declining survey response rates, expanding data ecosystems, and increasing demand for timely, actionable information. These pr...
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Hardik Rajpal @h-rajpal.bsky.social · 06/08/2026
What role does Emergence play in Neural Networks? We find that learning emergent low-dimensional representations is key for out-of-distribution generalisation. New Preprint out with @neural-reckoning.org arxiv.org/abs/2607.10430
arxiv.org
Emergent Generalization by Representation Learning in Artificial Neural Networks
Dimensionality reduction has proven powerful for identifying neural manifolds, which are low-dimensional structures underlying high-dimensional neural activity. These low-dimensional representations h...
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Andy Baker @andy-baker.bsky.social · 03/08/2026
A cluster hire here at UNSW Science, looking for cross-disciplinary Level B/C academics. Come and work in Sydney! www.unsw.edu.au/science/abou... Crossposted with @openvibe.social
unsw.edu.au
Recruitment | Science - UNSW Sydney
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Phil Steitz @psteitz.bsky.social · 04/08/2026
The end effect is the same: users get things done without thinking too much. There are two big differences though: 0) massive variance injection 1) massive energy burn solving the same problems over and over
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Phil Steitz @psteitz.bsky.social · 04/08/2026
Talking to a UX designer today I realized that AI app design is different. instead of focusing on discerning user intent and minimizing cognitive load in business apps, now we let users give vague signals and then count on “the AI” to do something intelligent that effectively becomes their intent.
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Phil Steitz @psteitz.bsky.social · 26/07/2026
This is wonderful. I especially like “Don’t be prissy.” There is no problem more sure to go away on its own than an ink smudge on your finger. open.substack.com/pub/nealstep...
open.substack.com
Writing by Hand is Good for your Brain - Here's how to do it
Because I am known to write using a fountain pen on paper, a number of people have pointed me to this post and its underlying research. I won’t rehash what is said in those sources, but the gist of it...
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Phil Steitz @psteitz.bsky.social · 26/07/2026
This kind of analysis applies to other fields as well. The move from proof scarcity” to “proof abundance” has analogues everywhere that AI is being used to do hard technical work. The backlog of reformulation for real insight is growing rapidly. teorth.github.io/tao-web/slid...
teorth.github.io
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Phil Steitz @psteitz.bsky.social · 25/07/2026
Troubling, but not at all surprising. I am reminded of Socrates’ warning to Hipppcrates in Protagoras 314b that you can’t “return” cognitive experience to “the vendor” like bad food because you have already been changed by it.
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Tali @talius2.bsky.social · 21/07/2026
New #AI #addon helps developers #automate everyday #programming #tasks Researchers developed Program-as-Weights (PAW), a new method that lets developers turn AI instructions into tiny, local tools, enabling powerful, private & offline AI processing scitechupdates.com/n...
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Gabriele Sarti @gsarti.com · 17/07/2026
Happy to be a small part of this colossal effort led by @zouharvi.bsky.social to reinvent the future of machine translation evaluation! 🔡 Join us in building the LTB and become a coauthor, help wanted!
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Piergiorgio Lucidi @pjlucidi.bsky.social · 10/07/2026
Enterprise AI has a data ingestion crisis: unscalable pipelines, and critical document security (ACL) leaks. Launching the Open Ingestion Standard (OIS) and OpenCrawling! www.open4dev.com/journal/2026... #Java25 #RAG #AISecurity #ZeroTrust #VectorDatabase #SpringBoot #MCP #ModelContextProtocol
open4dev.com
Beyond the Silos: Announcing the Open Ingestion Standard (OIS) and OpenCrawling — Open4Dev
Introducing the Open Ingestion Standard (OIS) and the reference implementation OpenCrawling.
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Megan Wachspress @meganwachspress.bsky.social · 10/07/2026
Turns out if you have complete and total disregard for human creative effort you eventually steal it from someone with the resources to hit back.
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Phil Steitz @psteitz.bsky.social · 10/07/2026
I’m a little late with this message having been offgrid for the last week. Happy Birthday, USA! We will never give up on you.
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Phil Steitz @psteitz.bsky.social · 03/07/2026
eshumarneedi.com/2026/07/03/z... Nice rant.
eshumarneedi.com
Zuckerberg ‘Admits’ Meta’s Layoffs Were Ineffective
Mark Zuckerberg, Meta’s chief executive: In retrospect, he said, the “trajectory of the agentic development over at least the last four months hasn’t really accelerated in the way that we expected,” a...
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NPR @npr.org · 03/07/2026
Communities around the U.S. are putting on epic fireworks shows for America's 250th birthday — but that spells trouble for dogs and cats. Here's a guide to help the animals in your life.
n.pr
Tips for taking care of your pets when fireworks are booming
Communities around the U.S. are putting on epic fireworks shows for America's 250th birthday — but that spells trouble for dogs and cats. Here's a guide to help the animals in your life.
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Phil Steitz @psteitz.bsky.social · 02/07/2026
Agreed it is powerful and valuable. The problem is when it becomes an end in itself or people start looking at it that way. You can “tell a good story” and communicate effectively but you can also tell a good story that is totally divorced from reality.
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Phil Steitz @psteitz.bsky.social · 01/07/2026
A coworker gave me a compliment today. She said I was a “great storyteller.” I cringed. If a child told me that I would be happy, but in the workplace…not so much. The whole “story-telling” push among the b-school gang today reeks to me of epistemic decay.
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Naomi Saphra @nsaphra.bsky.social · 28/06/2026
Our ICML mechinterp workshop paper demonstrates how feature geometry can lead to model failures, and analyzing that geometry can help us to efficiently build adversarial test sets based on concept combinations.
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Eugène Schön @eugen12.bsky.social · 29/06/2026
Promising advance! 🚀🧠🇨🇭 EPFL researchers create an AI model that thinks like we do. More with this article: bit.ly/3QpoXs8
bit.ly
EPFL researchers create an AI model that thinks like we do
An EPFL team has created a new Large Language Model that is structured similarly to a human brain, allowing users more control and moving away from “black box” AI.
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Naomi Saphra @nsaphra.bsky.social · 25/06/2026
I'm so happy when other people write papers on nondeterministic factors in training. embrace the chaos
arxiv.org
Emergent Capabilities Arise Randomly from Learning Sparse Attention Patterns
Neural scaling laws for transformer language models predict smooth improvements in pretraining loss with increasing parameters, but downstream capabilities such as in-context learning are known to eme...
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Rémi Flamary @rflamary.bsky.social · 24/06/2026
As scientists we should remember that when we talk science with an AI model we teach private companies how to do science and not a new generation of scientists that will contribute to society. Time spent doing faster research with AI agents is not spent mentoring students. Better CV but worth it?
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Phil Steitz @psteitz.bsky.social · 15/06/2026
This squares with my experience. The HN comments are delightful. Yes, this absolutely is cargo cult, but at this point the planes are still landing. news.ycombinator.com/item%3Fid%3D...
google.com
Don't trust large context windows | Hacker News
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Marcelo Calbucci @calbucci.com · 14/06/2026
Not enough people know the expression "Bread and circuses."
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Phil Steitz @psteitz.bsky.social · 14/06/2026
We used to have this word, “presidential.”
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