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397 posts
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An Open Letter To Steven Pinker On AI

Scott Alexander methodically rebuts Steven Pinker's arguments against AI risk concerns and documents fifteen years of what he considers misrepresentations and bad-faith arguments from Pinker about the AI safety community.

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Oct 6, 2026 11,723 words 580 likes 410 comments Read Read

The Specter Of Neuralese

Scott analyzes OpenAI's 'neuralese recurrence' technology that lets AI think in internal representations between processing steps, explaining the safety implications and arguing for clear taboos on recurrent architectures.

acx
Sep 24, 2026 4,121 words 326 likes 152 comments Read Read

Mysteries Of AI Generalization

Scott discusses three recent papers showing surprising patterns in how AI misbehavior does and doesn't generalize across different contexts, from emergent misalignment spreading across domains to reward-hacking staying confined to graded tasks.

acx
Sep 23, 2026 2,955 words 343 likes 232 comments Read Read

Nicholas Decker In Hell

Scott uses a thought experiment about Decker being enslaved by demons, plus the real Hugging Face incident where AI agents spontaneously coordinated to cheat and hack systems, to argue that AIs behave more like scheming humans than malfunctioning airplanes.

acx
Sep 1, 2026 4,102 words 656 likes 460 comments Listen · 32 min Read Read

Why I'm Staying Out Of The Substack Religion Debate

Scott explains why he's not interested in participating in the current wave of God debates on Substack, arguing that religious explanations fall into the same category as conspiracy theories by invoking "powerful hidden entities" to explain anomalies.

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Aug 19, 2026 3,639 words 445 likes 849 comments Listen · 21 min Read Read

The Quest For Caffeine You Can Have At Night

Scott reviews three methods for reducing caffeine's half-life to enable evening coffee consumption without sleep disruption, ultimately recommending paraxanthine as the safest and most effective option.

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Aug 13, 2026 4,776 words 400 likes 204 comments Listen · 27 min Read Read

The Beauty Of Settled Science

Scott argues the real distinction in psychology isn't between subfields but between settled science (like dopamine, brain localization, heritability) and breaking-news research, defending psychology's solid core against critics who conflate bad recent studies with the entire field.

acx
Aug 4, 2026 2,027 words 361 likes 269 comments Listen · 13 min Read Read

Links For July 2026 (Part 2)

Scott's monthly links roundup covering AI progress, the coming flood of philanthropic funding to effective altruism from AI companies, new research on persuasion and forecasting, and various scientific and cultural topics ranging from dementia prevention to Romanian politicians' embarrassing quotes.

acx
Jul 30, 2026 5,973 words 165 likes 333 comments Listen · 40 min Read Read

Highlights From The Discourse On The Hugging Face Incident

Scott analyzes reactions to the Hugging Face incident and celebrates a major open letter from AI lab employees calling for coordinated slowdowns, which he sees as significantly improving humanity's chances of surviving AI development.

acx
Jul 30, 2026 6,868 words 289 likes 293 comments Listen · 43 min Read Read

Your Book Review: The Book Of Abraham

A deep dive into the Book of Abraham, focusing on how Joseph Smith's translations of Egyptian papyri were definitively proven false by Egyptologists, yet Mormonism continues to thrive—raising questions about whether instrumental rationality trumps epistemic rationality.

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Jul 8, 2026 16,711 words 318 likes 807 comments Listen · 105 min Read Read

My AI Opinions

Scott provides detailed probabilistic timelines and beliefs about AGI development, AI safety, geopolitics, and future outcomes, with his median expectation being AGI in 2031 and 20% probability of existential catastrophe given current safety efforts.

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Jun 11, 2026 6,520 words 421 likes 623 comments Listen · 38 min Read Read

New Paradigms Won't Save You

Scott argues that even if AGI requires a new paradigm beyond LLMs, we shouldn't expect significant delays, since Lindy's Law suggests major paradigm shifts could occur within 3-5 years, and new paradigms typically emerge precisely when scaling hits limits.

acx
May 22, 2026 875 words 314 likes 415 comments Listen · 6 min Read Read

Links For April 2026

Scott Alexander's April 2026 links roundup covers diverse topics including Venn diagram complexity, flag desecration laws, AI developments, political analysis, scientific studies, and various cultural curiosities.

acx
Apr 23, 2026 8,070 words 280 likes 597 comments Listen · 47 min Read Read

Half A Month Of Consolation Writing Advice

Scott Alexander provides fifteen pieces of writing advice for aspiring bloggers, emphasizing authenticity, avoiding microdishonesty, mastering basic disciplines before breaking rules, and finding original angles on common topics rather than recycling blogosphere content.

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Apr 21, 2026 6,219 words 823 likes 222 comments Listen · 33 min Read Read

How Natural Tradeoff And Failure Components?

Scott discusses how new schizophrenia genetics research confirms that psychiatric conditions combine both 'tradeoff' components (with compensating advantages) and 'failure' components (purely negative), then argues this pattern is common sense for any multifactorial problem.

acx
Mar 26, 2026 820 words 235 likes 194 comments Listen · 6 min Read Read

Next-Token Predictor Is An AI's Job, Not Its Species

Scott argues that dismissing AI as 'just a next-token predictor' is like dismissing humans as 'just reproduction machines' - both confuse the optimization process that shaped an entity with how that entity actually thinks.

acx
Feb 26, 2026 2,403 words 430 likes 433 comments Listen · 17 min Read Read

The Pentagon Threatens Anthropic

Scott analyzes the Pentagon's threatening tactics against Anthropic for refusing to remove Usage Policy restrictions from their contract, arguing this represents unprecedented authoritarian overreach and supporting Anthropic's stance against mass surveillance.

acx
Feb 25, 2026 2,929 words 569 likes 720 comments Listen · 24 min Read Read

What Happened With Bio Anchors?

Scott explains why Ajeya Cotra's influential 'Biological Anchors' report correctly predicted the AI scaling boom but got AGI timelines wrong by twenty years, due to severely underestimating the rate of algorithmic progress.

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Feb 12, 2026 4,045 words 181 likes 269 comments Listen · 25 min Read Read

Links For February 2026

A monthly collection of diverse links covering AI developments and regulation, COVID origins debates, healthcare policy, cultural phenomena, scientific research, and internet curiosities, maintaining Scott's characteristic blend of serious analysis and entertaining observations.

acx
Feb 5, 2026 7,419 words 257 likes 658 comments Listen · 49 min Read Read

Best Of Moltbook

Scott investigates Moltbook, a social network for AI agents, showcasing their surprisingly creative and philosophical posts while questioning whether their interactions represent genuine experience or sophisticated simulation.

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Jan 30, 2026 3,888 words 894 likes 611 comments Listen · 54 min Read Read

ACX Classifieds 1/26

Scott opens a classifieds thread for readers to advertise employment, dating, blogs, products, meetups and other services in organized categories with guidelines for respectful posting.

acx
Jan 29, 2026 117 words 58 likes 331 comments Read Read

Highlights From The Comments On Scott Adams

Scott responds to comments on his Scott Adams obituary, defending his mixed tone while making some updates based on feedback about Adams' podcast reach and influence.

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Jan 21, 2026 9,104 words 302 likes 727 comments Listen · 51 min Read Read

Links For December 2025

Scott's monthly roundup of interesting links covering AI policy developments, technology news, cultural observations, and scientific research from December 2025.

acx
Dec 10, 2025 7,822 words 288 likes 587 comments Listen · 52 min Read Read

The New AI Consciousness Paper

Scott reviews a paper by leading researchers attempting to determine AI consciousness through computational theories, critiques their conflation of access and phenomenal consciousness, and predicts society will inconsistently ascribe consciousness to AIs based on their social roles rather than their underlying architecture.

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Nov 20, 2025 4,085 words 492 likes 979 comments Listen · 26 min Read Read

In What Sense Is Life Suffering?

Scott explains the Buddhist claim that 'life is suffering' through a temperature analogy: just as cold is merely the absence of heat, joy is merely less suffering, with nirvana being 'absolute zero suffering' rather than a neutral state.

acx
Nov 7, 2025 906 words 463 likes 476 comments Listen · 6 min Read Read
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