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76 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.

acx
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

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

Links For July 2026 (Part 1)

Scott shares his monthly collection of interesting links from around the internet, covering topics from Jeremy Bentham's linguistic legacy to AI developments, with characteristic commentary and fact-checking caveats.

acx
Jul 22, 2026 3,748 words 220 likes 442 comments Listen · 22 min Read Read

The Sigmoids Won't Save You

Scott debunks the "all exponentials become sigmoids" argument against AI risk by showing how forecasters consistently predict premature flattening of exponential trends, and argues that without deep understanding of AI dynamics, we should expect current AI progress to continue for roughly as long as it's already been going.

acx
May 15, 2026 1,823 words 605 likes 480 comments Listen · 11 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

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.

acx
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

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.

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

ACX Grants Results 2025

Scott announces the results of the 2025 ACX Grants round, awarding $1.5 million to 42 projects out of 654 applications, covering areas from genetic engineering and disease prevention to AI safety and educational reform.

acx
Oct 13, 2025 4,808 words 195 likes 265 comments Listen · 29 min Read Read

Your Review: The Synaptic Plasticity and Memory Hypothesis

A review of the synaptic plasticity and memory hypothesis arguing that it is insufficient to explain memory, and proposing a broader cellular processes and memory hypothesis that includes molecular and intracellular mechanisms.

acx
Sep 12, 2025 11,801 words 212 likes 180 comments Listen · 66 min Read Read

Links For September 2025

Scott Alexander presents his monthly collection of interesting links and developments across technology, science, culture, and policy, with personal commentary on each item.

acx
Sep 4, 2025 8,283 words 233 likes 917 comments Listen · 45 min Read Read

Your Review: Alpha School

A parent details their year-long experience with Alpha School in Austin, examining how this innovative program achieves accelerated learning through a combination of technology, personalized instruction, and incentive systems.

acx
Jun 27, 2025 18,662 words 724 likes 687 comments Listen · 109 min Read Read

ACX Grants 1-3 Year Updates

Scott reviews updates from two cohorts of ACX Grants recipients (from 2021 and 2024), analyzing their progress and sharing lessons learned about what makes grants successful.

acx
Jun 18, 2025 12,838 words 124 likes 169 comments Listen · 75 min Read Read

Why Should Intelligence Be Related To Neuron Count?

Scott investigates the correlation between intelligence and neuron count, exploring various theories before suggesting that more neurons allow for less polysemantic (overlapping) representations of concepts.

acx
Mar 7, 2025 1,533 words 292 likes 214 comments Listen · 10 min Read Read

Links For February 2025

Scott shares 50 diverse links covering topics from AI developments to policy changes, with commentary on current events, research findings, and societal trends.

acx
Feb 27, 2025 6,840 words 212 likes 933 comments Listen · 43 min Read Read

Highlights From The Comments On Tegmark's Mathematical Universe

Scott responds to comments and criticisms of his post about Tegmark's Mathematical Universe Hypothesis and its implications for arguments about God's existence, addressing technical points about Boltzmann brains, simplicity measures, and philosophical objections.

acx
Feb 21, 2025 6,150 words 110 likes 568 comments Listen · 37 min Read Read

Prison And Crime: Much More Than You Wanted To Know

Scott analyzes research on whether longer prison sentences reduce crime, examining studies on deterrence, incapacitation, and aftereffects, to conclude that while prison does decrease crime through incapacitation, it's less cost-effective than other methods like policing.

acx
Nov 27, 2024 15,033 words 602 likes 867 comments Listen · 88 min Read Read

Links For November 2024

A diverse collection of news items, studies, and interesting facts from November 2024, covering topics from scientific discoveries to cultural phenomena.

acx
Nov 1, 2024 6,373 words 216 likes 930 comments Listen · 41 min Read Read

Sakana, Strawberry, and Scary AI

Scott Alexander examines how AI achievements, once considered markers of true intelligence or danger, are often dismissed as unimpressive, potentially leading to concerning AI behaviors being normalized.

acx
Sep 18, 2024 2,583 words 363 likes 546 comments Listen · 18 min Read Read

Mantic Monday 5/13/24

Scott Alexander reviews recent developments in prediction markets and forecasting, including regulatory changes, platform pivots, and debates about the field's future.

acx
May 13, 2024 5,066 words 53 likes 144 comments Listen · 31 min Read Read

Asterisk/Zvi on California's AI Bill

Scott Alexander analyzes California's AI regulation bill SB1047, finding it reasonably well-designed despite misrepresentations, and ultimately supporting it as a compromise between safety and innovation.

acx
May 8, 2024 2,928 words 99 likes 238 comments Listen · 17 min Read Read

Highlights From The Comments On The Lab Leak Debate

Scott Alexander responds to comments on his COVID-19 origins debate post, addressing criticisms and maintaining his support for the zoonosis theory.

acx
Apr 9, 2024 18,355 words 128 likes 695 comments Listen · 99 min Read Read
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