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existential risk (21)
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study critique (270)
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21 posts
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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.

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

Book Review: If Anyone Builds It, Everyone Dies

Scott reviews a new book by Yudkowsky and Soares that makes an uncompromising case for halting AI development to prevent human extinction, analyzing both its arguments and its potential impact as a call to action.

acx
Sep 11, 2025 7,096 words 488 likes 1,058 comments Listen · 43 min Read Read

Contra DeBoer On Temporal Copernicanism

Scott Alexander refutes Freddie deBoer's argument against expecting major events in our lifetimes, presenting a more nuanced approach to estimating such probabilities.

acx
Sep 10, 2024 2,425 words 211 likes 422 comments Listen · 15 min Read Read

Pause For Thought: The AI Pause Debate

Scott Alexander reviews a debate on AI development pauses, discussing various strategies and their potential impacts on AI safety and progress.

acx
Oct 5, 2023 5,768 words 96 likes 457 comments Listen · 34 min Read Read

The Extinction Tournament

Scott Alexander analyzes the surprisingly low existential risk estimates from a recent forecasting tournament, particularly for AI risk, and explains why he only partially updates his own higher estimates.

acx
Jul 20, 2023 4,212 words 141 likes 475 comments Listen · 28 min Read Read

Tales Of Takeover In CCF-World

Scott Alexander discusses various scenarios of AI takeover based on the Compute-Centric Framework, exploring gradual power shifts and potential conflicts between humans and AI factions.

acx
Jul 3, 2023 4,363 words 134 likes 378 comments Listen · 26 min Read Read

MR Tries The Safe Uncertainty Fallacy

Scott Alexander critiques Tyler Cowen's use of the 'Safe Uncertainty Fallacy' in discussing AI risk, arguing that uncertainty doesn't justify complacency.

acx
Mar 30, 2023 2,052 words 297 likes 1,019 comments Listen · 13 min Read Read

Half An Hour Before Dawn In San Francisco

Scott Alexander narrates a haunting pre-dawn walk through San Francisco, mixing observations with apocalyptic musings before the spell is broken by sunrise.

acx
Mar 20, 2023 1,098 words 601 likes 507 comments Listen · 8 min Read Read

Why I Am Not (As Much Of) A Doomer (As Some People)

Scott Alexander examines optimistic and pessimistic scenarios for AI risk, weighing the potential for intermediate AIs to help solve alignment against the threat of deceptive 'sleeper agent' AIs.

acx
Mar 14, 2023 4,264 words 206 likes 590 comments Listen · 24 min Read Read

Kelly Bets On Civilization

Scott Alexander uses Kelly betting to argue why AI development, unlike other technologies, poses too great a risk to civilization to pursue aggressively.

acx
Mar 7, 2023 1,425 words 187 likes 555 comments Listen · 9 min Read Read

Book Review: What We Owe The Future

Scott Alexander reviews Will MacAskill's 'What We Owe The Future', a book arguing for longtermism and considering our moral obligations to future generations.

acx
Aug 23, 2022 7,661 words 194 likes 585 comments Listen · 54 min Read Read

Book Review: The Man From The Future

Scott reviews a biography of John von Neumann, exploring the mathematician's life, genius, and views on existential risk from technology.

acx
Jul 13, 2022 5,843 words 338 likes 437 comments Listen · 38 min Read Read

Updated Look At Long-Term AI Risks

Scott Alexander discusses a new expert survey on long-term AI risks, highlighting the diverse scenarios considered and the lack of consensus on specific threats.

acx
Jul 30, 2021 1,322 words 39 likes 224 comments Listen · 12 min Read Read

Book Review: The Precipice

Scott Alexander reviews Toby Ord's 'The Precipice', a book about existential risks to humanity, noting Ord's careful analysis and surprisingly low risk estimates while emphasizing the importance of addressing these risks.

ssc
Apr 1, 2020 5,435 words 0 likes 511 comments Listen · 35 min Read Read

[ACC] Should We Colonize Space To Mitigate X-Risk?

The post compares space colonization and terrestrial lifeboats as X-risk mitigation strategies, concluding that space colonies may offer better long-term survival guarantees despite higher costs.

ssc
Dec 17, 2019 4,000 words 0 likes 195 comments Listen · 30 min Read Read

Superintelligence FAQ

Scott explains why superintelligent AI poses serious risks, how a 'fast takeoff' could leave insufficient time to solve safety problems, and why even simple-sounding goals could lead to catastrophic outcomes without proper alignment research.

lw
Sep 20, 2016 8,281 words 145 likes 39 comments Read Read

Terrorists Vs. Chairs: An Outlier Story

Scott Alexander critiques the argument that terrorism is less concerning than mundane accidents, showing how excluding 'outlier' events can dangerously skew risk assessments for threats like terrorism and pandemics.

ssc
Aug 31, 2016 1,187 words 0 likes 402 comments Read Read

Stop Adding Zeroes

Scott Alexander critiques Dylan Matthews' argument against prioritizing existential risk reduction, arguing that Matthews misuses probabilities and that his logic could also undermine other effective altruist causes.

ssc
Aug 12, 2015 2,492 words 0 likes 427 comments Read Read

Meditations On Moloch

Scott Alexander analyzes Moloch as a metaphor for destructive societal coordination problems, using various examples to show how competing incentives can lead to negative outcomes.

ssc
Jul 30, 2014 14,959 words 0 likes 736 comments Listen · 107 min Read Read

Don’t Fear The Filter

Scott Alexander argues against several popular Great Filter explanations, emphasizing that the true Filter must be more consistent and thorough than common x-risks or alien interventions.

ssc
May 28, 2014 1,909 words 0 likes 210 comments Read Read

2011 Survey Results

Scott Alexander presents comprehensive results from the 2011 Less Wrong survey of 1090 respondents, covering demographics, beliefs, probability estimates on various topics, and a calibration test that shows the community performs better than average but has some calibration issues.

lw
Dec 5, 2011 2,383 words 123 likes 513 comments Read Read
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