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Eddy Keming Chen

@eddykemingchen.bsky.social
161 followers 46 following 71 posts

Philosopher @ UC San Diego. Author of Laws of Physics (Cambridge UP) and co-author of Nature Comment on AGI. www.eddykemingchen.net

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Eddy Keming Chen @eddykemingchen.bsky.social · 28/09/2026
How close are we to superintelligence? Closer than I thought in February. New evidence forced me to revise my prediction: perhaps within a year, not five. My interview with @ucsandiego.bsky.social Today on why, and on what an exciting and frightening moment this is. today.ucsd.edu/story/how-cl...
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Eddy Keming Chen @eddykemingchen.bsky.social · 12/08/2026
Career update: as of July 1, I hold a joint appointment at UC San Diego, in the Halıcıoğlu Data Science Institute and the Department of Philosophy. Grateful to colleagues in both schools. It's an exciting time for philosophy of science and the foundations of AI. More soon.
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Eddy Keming Chen @eddykemingchen.bsky.social · 05/06/2026
Many thanks to Stephan Hartmann for the invitation to visit LMU Munich. I had a wonderful time meeting colleagues across the university and was honored to give a Philosophy & Physics Colloquium talk, “AI Meets Philosophy of Science: Towards a Foundation of AI.” Link: www.youtube.com/watch?v=aMyk...
youtube.com
Philosophy and Physics Colloquium: Eddy Chen - AI meets Philosophy of Science
YouTube video by Munich Center for Mathematical Philosophy
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Eddy Keming Chen @eddykemingchen.bsky.social · 05/03/2026
Hi Philip, thanks for engaging with our paper. From our perspective, it's quite an achievement that LLMs passed the Turing test, and they also performed well at math, physics, and coding competitions. It is not true that no one takes the Turing test seriously.
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Eddy Keming Chen @eddykemingchen.bsky.social · 26/02/2026
Grateful to @thebjps.bsky.social for featuring our recent paper and making it free to read! Glad to see philosophy of science in the news!
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Eddy Keming Chen @eddykemingchen.bsky.social · 24/02/2026
Excited to give a talk on observation typicality at the Centre for Quantum Information and Quantum Control (CQIQC, U of Toronto)! Looking forward to meeting Aephraim Steinberg and colleagues to discuss quantum foundations. Event page: cqiqc.physics.utoronto.ca/events/quant...
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Eddy Keming Chen @eddykemingchen.bsky.social · 22/02/2026
A super interesting paper on universal steering of AI models just appeared in Science, with striking evidence for the Linear Representation Hypothesis. Congrats Misha Belkin and coauthors! www.science.org/eprint/URRDN...
science.org
Toward universal steering and monitoring of AI models
Artificial intelligence (AI) models contain much of human knowledge. Understanding the representation of this knowledge will lead to improvements in model capabilities and safeguards. Building on adva...
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Eddy Keming Chen @eddykemingchen.bsky.social · 14/02/2026
Grateful to @apaphilosophy.bsky.social for highlighting my @nature.com Comment coauthored with Mikhail Belkin, Leon Bergen, and David Danks. We argue that the artificial general intelligence (AGI) has arrived, and the evidence is clear.
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Eddy Keming Chen @eddykemingchen.bsky.social · 10/02/2026
Here's a paywall free link to the article: rdcu.be/e1Vgn
rdcu.be
Does AI already have human-level intelligence? The evidence is clear | Nature
The vision of human-level machine intelligence laid out by Alan Turing in the 1950s is now a reality. Eyes unclouded by dread or hype will help us to prepare for what comes next. The vision of human-level machine intelligence laid out by Alan Turing in the 1950s is now a reality. Eyes unclouded by dread or hype will help us to prepare for what comes next.
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Eddy Keming Chen @eddykemingchen.bsky.social · 10/02/2026
Links to our paper: journals.uchicago.edu/doi/10.1086/... arxiv.org/pdf/2410.16860
journals.uchicago.edu
Typical Quantum States of the Universe are Observationally Indistinguishable | The British Journal for the Philosophy of Science: Vol 0, No ja
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Eddy Keming Chen @eddykemingchen.bsky.social · 10/02/2026
Thanks to Karmela Padavic-Callaghan @kpc.bsky.social for the wonderful writeup, and to JB Manchak @manchak.bsky.social, Sheldon Goldstein, and Emily Adlam for sharing their perspectives.
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Eddy Keming Chen @eddykemingchen.bsky.social · 10/02/2026
My paper with Roderich Tumulka is featured in @newscientist.com! We prove that the quantum state of the universe is, in a sense, fundamentally unknowable. Nature keeps its deepest secrets.
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Eddy Keming Chen @eddykemingchen.bsky.social · 04/02/2026
Incredible! Thanks for sharing it with me. I'm very impressed by the analogy "I'm rain, not a river."
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Eddy Keming Chen @eddykemingchen.bsky.social · 02/02/2026
For the first time in human history, we are no longer alone in the space of general intelligence.
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Eddy Keming Chen @eddykemingchen.bsky.social · 02/02/2026
Recognizing current LLMs as AGI and as fulfilling the vision of machine intelligence set out by Turing is a wake-up call. These systems are not on the horizon; they are here.
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Eddy Keming Chen @eddykemingchen.bsky.social · 02/02/2026
Our thesis: insofar as individual humans have general intelligence, current LLMs do, too.
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Eddy Keming Chen @eddykemingchen.bsky.social · 02/02/2026
The vision of human-level machine intelligence laid out by Alan Turing in the 1950s is now a reality. Eyes unclouded by dread or hype will help us to prepare for what comes next.
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Eddy Keming Chen @eddykemingchen.bsky.social · 02/02/2026
Does AI already have human-level general intelligence (AGI)? Our answer in @nature.com today: Yes, AGI has arrived. The evidence is clear. www.nature.com/articles/d41...
nature.com
Does AI already have human-level intelligence? The evidence is clear
The vision of human-level machine intelligence laid out by Alan Turing in the 1950s is now a reality. Eyes unclouded by dread or hype will help us to prepare for what comes next.
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Eddy Keming Chen @eddykemingchen.bsky.social · 30/01/2026
Excited to give "AI Meets Philosophy of Science" talks in Arizona—today at @arizonastateuni.bsky.social , next Fri at @uarizona.bsky.social . Why does ML work so well? I argue it reveals abundant learnable structure in nature, motivating an expanded view of laws beyond fundamental physics.
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Eddy Keming Chen @eddykemingchen.bsky.social · 21/12/2025
Very happy to share that my paper coauthored with Rodi Tumulka has been accepted for publication in The British Journal for the Philosophy of Science! The result was unexpected and points to fundamental limits on knowledge in a quantum universe. arxiv.org/abs/2410.168...
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Eddy Keming Chen @eddykemingchen.bsky.social · 18/12/2025
Very cool! Thanks for sharing this; looking forward to reading it during the holiday!
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Eddy Keming Chen @eddykemingchen.bsky.social · 10/12/2025
What a great idea!!
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Eddy Keming Chen @eddykemingchen.bsky.social · 01/12/2025
Heading to my first NeurIPS, this time right here in San Diego! Lots of great sessions related to AI foundations! neurips.cc
neurips.cc
2025 Conference
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Eddy Keming Chen @eddykemingchen.bsky.social · 19/11/2025
My paper, “The Simplicity of Physical Laws,” is now out in Noûs. One of the hardest problems I’ve worked on. The solution came as a surprise. It’s also shaping my current thinking about the foundations of AI. Link: onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
The simplicity of physical laws
Physical laws are strikingly simple, yet there is no a priori reason for them to be so. I propose that nomic realists—Humeans and non-Humeans—should recognize simplicity as a fundamental epistemic gu....
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Eddy Keming Chen @eddykemingchen.bsky.social · 01/11/2025
Very impressive!!
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Eddy Keming Chen @eddykemingchen.bsky.social · 28/10/2025
That's wonderful news, Nicole! Congratulations!!!
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Eddy Keming Chen @eddykemingchen.bsky.social · 28/10/2025
New preprint with Jeff Barrett! We derive the Principal Principle—rational credence should match known chance—without circularity. Key idea: statistical constraint laws (algorithmic randomness) + exchangeable priors (inductive assumptions) → PP. philpapers.org/rec/BARARE-9
philpapers.org
Jeffrey A. Barrett & Eddy Keming Chen, Algorithmic Randomness, Exchangeability, and the Principal Principle - PhilPapers
We introduce a framework uniting algorithmic randomness with exchangeable credences to address foundational questions in philosophy of probability and philosophy of science. To demonstrate its power, ...
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Eddy Keming Chen @eddykemingchen.bsky.social · 02/09/2025
New paper with Jeff Barrett coming out in @thebjps.bsky.social ! We develop new notions of probability and probabilistic laws. Years in the making. Next: a natural proof of the Principal Principle. Link: philpapers.org/rec/BARARA-17
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Eddy Keming Chen @eddykemingchen.bsky.social · 12/07/2025
Excited to be giving a talk on philosophy of science and foundations of AI at the National University of Singapore, hosted by the Department of Philosophy. It’s a special occasion for me—NUS is where I began my philosophical training as an undergraduate 15 years ago.
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Eddy Keming Chen @eddykemingchen.bsky.social · 07/07/2025
Looking forward to talking about exchangeability, algorithmic randomness, and the Principal Principle tomorrow at the Institute of Data Science at the University of Hong Kong! (Joint work with Jeff Barrett)
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Eddy Keming Chen @eddykemingchen.bsky.social · 18/06/2025
Debating laws of physics + metaphysics with my former PhD supervisor Barry Loewer on Theories of Everything. Plenty of disagreements, but always learning! Watch here: www.youtube.com/watch?v=xZna...
youtube.com
Do The Laws of Physics Exist?
YouTube video by Curt Jaimungal
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Eddy Keming Chen @eddykemingchen.bsky.social · 05/06/2025
Just finished a semester-long reading group on my book with the All Milan History & Philosophy of Physics group, thanks to the amazing Silvia De Bianchi. Incredible discussions on laws of nature, simplicity, and cosmology. Grateful for the sharp questions & insights!
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Jennifer Ouellette @jenlucpiquant.bsky.social · 15/04/2025
Lofty Math Problem Called Hilbert’s Sixth Closer to Being Solved www.scientificamerican.com/article/loft...
scientificamerican.com
Mathematicians Crack 125-Year-Old Problem, Unite Three Physics Theories
A breakthrough in Hilbert’s sixth problem is a major step in grounding physics in math
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Eddy Keming Chen @eddykemingchen.bsky.social · 29/04/2025
Had the privilege to visit Armin Schwartzman’s group @ucsdhealthsci.bsky.social (Halıcıoğlu Data Science Institute + Biostatistics) to talk about algorithmic randomness, exchangeability, and the Principal Principle. Great conversations on probability and AI foundations!
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Eddy Keming Chen @eddykemingchen.bsky.social · 21/04/2025
Honored to receive the APA’s 2024 Public Philosophy Op-Ed Prize for “The Preordained Quantum Universe” (Nature, 2023). Thanks to @apaphilosophy for supporting public-facing philosophy! #Quantum #Philosophy #APA2024
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Eugene Y. S. Chua @eugenechua.bsky.social · 09/04/2025
Very happy that my paper with @eddykemingchen.bsky.social is officially published with Synthese with open access. It was a great opportunity to survey the space of options when it comes to the Born Rule for Everettians, and see how density matrix realism generalizes them!
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Eddy Keming Chen @eddykemingchen.bsky.social · 09/04/2025
Happy to share that my paper with @eugenechua.bsky.social is now officially published with open access! 🚀 "Decoherence, branching, and the Born rule in a mixed-state Everettian multiverse" link.springer.com/article/10.1... Thanks to all who offered feedback!
link.springer.com
Decoherence, branching, and the Born rule in a mixed-state Everettian multiverse - Synthese
In Everettian quantum mechanics, justifications for the Born rule appeal to self-locating uncertainty or decision theory. Such justifications have focused exclusively on a pure-state Everettian multiv...
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Eddy Keming Chen @eddykemingchen.bsky.social · 08/04/2025
Thanks so much, Davide! I’m really honored by your engagement with the book. Your presentation was thoughtful, clear, and generous throughout. I'm excited to follow the rest of your series!
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Eddy Keming Chen @eddykemingchen.bsky.social · 08/04/2025
Just found this (Italian!) YouTube breakdown of Laws of Physics by physicist @davidedebiasio.bsky.social on his channel Spazi Attorcigliati. He dives into the first 20 pages—ontology, nomology, laws as constraints. I'm honored! Thanks to #ChatGPT I could follow along! www.youtube.com/watch?v=UDBD...
youtube.com
Le Leggi della Fisica (1/2) | Fisica: Filosofia e Fondamenti 3
YouTube video by Spazi Attorcigliati | Davide De Biasio
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Philosophy of Science Association @philsci.bsky.social · 10/03/2025
5. Andrews, Mel (2023) The Devil in the Data: Machine Learning & the Theory-Free Ideal
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Philosophy of Science Association @philsci.bsky.social · 10/03/2025
3. Brown, Matthew J. (2020) Science and Moral Imagination: A New Ideal for Values in Science. Science, Values, and the Public. 4. Ardourel, Vincent and Bangu, Sorin (2023) Finite-size scaling theory: Quantitative and qualitative approaches to critical phenomena.
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Philosophy of Science Association @philsci.bsky.social · 10/03/2025
Visit the PhilSci Archive 📄 to read the most downloaded preprints for the last 6 months: philsci-archive.pitt... 1. Chen, Eddy Keming (2023) Laws of Physics. 2. Rushing, Bruce and Gomez-Lavin, Javier (2024) Is the Scaling Hypothesis Falsifiable?
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Eddy Keming Chen @eddykemingchen.bsky.social · 22/03/2025
It is a surprising result that challenges our conventional intuitions regarding state distinguishability. Finally, I discuss potential connections to the PBR theorem and quantum tomography.
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Eddy Keming Chen @eddykemingchen.bsky.social · 22/03/2025
In the second part, drawing on joint work with Roderich Tumulka (arxiv.org/abs/2410.16860), I show that typical quantum states in any high-dimensional Hilbert space are observationally indistinguishable from the normalized projection (a mixed state) and from each other.
arxiv.org
Typical Quantum States of the Universe are Observationally Indistinguishable
This paper is about the epistemology of quantum theory. We establish a new result about a limitation to knowledge of its central object -- the quantum state of the universe. We show that, if the unive...
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Eddy Keming Chen @eddykemingchen.bsky.social · 22/03/2025
Title: Density Matrix Realism Abstract: I first define and clarify Density Matrix Realism—the view that the universe’s quantum state is best understood as an objective density matrix, which may be a mixed state, rather than as a pure wave function (arxiv.org/abs/2405.01025).
arxiv.org
Density Matrix Realism
Realism about quantum theory naturally leads to realism about the quantum state of the universe. It leaves open whether it is a pure state represented by a wave function, or an impure (mixed) one repr...
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Eddy Keming Chen @eddykemingchen.bsky.social · 22/03/2025
Excited to talk about density matrix realism and a new result on observation typicality at the Chapman workshop on quantum foundations in two days!
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Eddy Keming Chen @eddykemingchen.bsky.social · 17/03/2025
Big thanks to Snow Xueyin Zhang, Verónica Gómez Sánchez, and Ezra Rubenstein for the kind invitations and for showing me the famous Tarski Room!
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Eddy Keming Chen @eddykemingchen.bsky.social · 17/03/2025
Had a wonderful time in Berkeley, speaking at the Logic Group on Friday and the Metaphysics Workshop on Saturday! I presented two joint papers with Jeff Barrett—on chancy laws as constraints and deriving the Principal Principle from them. Great discussions and feedback.
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Eddy Keming Chen @eddykemingchen.bsky.social · 14/03/2025
Had a fantastic visit at Stanford—thanks to Elliott Sober and Thomas Icard for the kind invitation! Tomorrow, Linda and I are heading to Berkeley! Looking forward to engaging with faculty and students to discuss foundations of AI, algorithmic randomness, and the laws of nature.
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Eddy Keming Chen @eddykemingchen.bsky.social · 08/03/2025
Thank you!
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