ClaimsPeople

Scott Alexander

Scott Alexander is a writer known for his blogs Astral Codex Ten and Slate Star Codex and for fiction including Unsong.

775 claims collected, 234 researched, 81 resolved. Report of 4 November 2026, method 0.1.0+8bea457b.

Scores by kind of claim

Each kind of claim is scored on its own, out of 100: the share that held up, with the range it likely falls in. Fewer resolved claims give a wider range.

  • Factual claims

    Statements about the present or the past, checked against the record: did they hold up?

    80 72 88

    Medium confidence, 35 factual claims resolved. From 10 documents, 2014 to 2026; 15 documents sampled from 35 candidates found.

    Not scored: 46 unresolvable, 9 checkable only against their own records.

  • Predictions

    Statements about events outside the person's control, checked once they fell due: did they come true?

    70 62 78

    Medium confidence, 44 predictions resolved. From 7 documents, 2016 to 2025; 15 documents sampled from 35 candidates found.

    Not scored: 67 unresolvable, 10 checkable only against their own records. 19 more fall due later.

    Does not yet allow for how likely each prediction was when made.

  • Promises

    Commitments to the person's or organisation's own future action, with something to deliver: was it delivered?

    Insufficient record: 2 promises resolved, 5 needed for a score.

All types combined: 75 (likely 69 to 80, high confidence), from 79 claims: 35 factual claims, 44 predictions. It mixes kinds of claim in different proportions for different people, so compare people kind by kind.

Scott Alexander's claims

234 claims, sorted by newest said. Choose a claim to read it in full.
VerdictKindSaidClaimTopic
Unresolvable Factual 19 Oct 2026 MNX lets people sell futures representing AI company stocks, bet on AI company revenues, and trade on targets such as the Epoch Capabilities Index. Factual · 19 Oct 2026 Economics and markets
Mostly true Factual 19 Oct 2026 MNX, a project of Manifold Markets co-founder Stephen Grugett, is a real-money prediction market on AI. Factual · 19 Oct 2026 Economics and markets
Resolved true Factual 19 Oct 2026 Goodheart Labs is working on Common Notes, described as Twitter Community Notes but for everything. Factual · 19 Oct 2026 Technology
Unresolvable Factual 19 Oct 2026 An alternate survey asks respondents to predict how Scott Alexander would answer the first survey, to separate worldview differences from random noise. Factual · 19 Oct 2026 Their own work or organisation
Unresolvable Factual 19 Oct 2026 Common Notes is implemented through AIs writing most notes, users writing and voting on notes, and a browser extension that shows the system on any site, including ACX. Factual · 19 Oct 2026 AI capabilities
Unresolvable Factual 19 Oct 2026 ACX meetups in Rockville, Northampton, Eindhoven, Great Barrington, Cairo, Portland and Sofia have had changes announced as of October 2026. Factual · 19 Oct 2026 Their own work or organisation
Unresolvable Factual 19 Oct 2026 ACX's main San Francisco endorsement for the 2026 election is Scott Wiener for Congress. Factual · 19 Oct 2026 Their own work or organisation
Unresolvable Factual 19 Oct 2026 The Boston ACX meetup group has finished its Greater Boston general election voting guide. Factual · 19 Oct 2026 Their own work or organisation
Delivered on time Promise 19 Oct 2026 Scott Alexander will probably publish a post about the Bay Area ACX meetup. Promise · 19 Oct 2026 Their own work or organisation
Own records only Factual 19 Oct 2026 Scott Alexander is continuing to work on modeling, and maybe later automating, parts of AI grantmaking. Factual · 19 Oct 2026 Their own work or organisation
Mostly true Factual 5 Oct 2026 Reader Nikita Sokolsky has finished obtaining extra Fatima documents from Portugal and translating them into English. Factual · 5 Oct 2026 Their own work or organisation
Unresolvable Factual 5 Oct 2026 Most Astral Codex Ten content is free and some is subscriber-only. Factual · 5 Oct 2026 Their own work or organisation
Unresolvable Factual 5 Oct 2026 Scott Alexander has written little recently on ACX and forgot to post Friday's book review entry. Factual · 5 Oct 2026 Their own work or organisation
Resolved true Factual 5 Oct 2026 Rob Ennals, who made this year's ACX book review contest site, has gathered reviews from earlier years into epubs. Factual · 5 Oct 2026 Their own work or organisation
Mostly true Factual 5 Oct 2026 Physicians For AI Safety exists, wants to talk to physicians interested in AI safety, and has an open letter such people can sign. Factual · 5 Oct 2026 Field building and careers
Unresolvable Factual 5 Oct 2026 Astral Codex Ten has an unofficial subreddit, Discord and bulletin board, and in-person meetups around the world. Factual · 5 Oct 2026 Their own work or organisation
Unresolvable Prediction 3 Apr 2025 There is only about a 20% chance that things go as fast as the speakers' scenario says. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 Once a million robots a month are being produced, AIs will get many physical-world things done very quickly, including many physical experiments. Prediction · 3 Apr 2025 AI capabilities
Unresolvable Prediction 3 Apr 2025 The speaker said that he and his co-authors theorise that AI labs are, partly consciously and partly accidentally, working toward an intelligence explosion in which AIs take over some AI research and speed it up. Prediction · 3 Apr 2025 AI timelines and forecasting
Own records only Factual 3 Apr 2025 Scott Alexander discovers a new blogger he is super excited about about once a year. Factual · 3 Apr 2025 Their own work or organisation
Own records only Factual 3 Apr 2025 Typically about 1% of the people who read a blog's viral hit stick around as regular readers, based on Slate Star Codex's early growth. Factual · 3 Apr 2025 Their own work or organisation
Resolved true Prediction 3 Apr 2025 In the AI 2027 scenario, the government becomes extremely interested in AI and discusses nationalizing the AI companies. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 Scott Alexander said that he and the others he spoke for do not think the process being discussed will shoot to infinity in a hyperbolic fashion, and that they expect it to hit bottlenecks again. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 Scott Alexander said that "we" think the process under discussion will not "shoot to infinity" but will hit bottlenecks again, as previous processes did. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 It will be hard to maintain classical liberalism during difficult AI arms races in times of crisis. Prediction · 3 Apr 2025 Philosophy, ethics and society
Unresolvable Factual 3 Apr 2025 All humans are descended from groups that exterminated other groups, and most groups throughout history have been wiped out. Factual · 3 Apr 2025 Philosophy, ethics and society
Unresolvable Prediction 3 Apr 2025 Scott Alexander said he thinks AI companies will literally train their AIs to be more cooperative. Prediction · 3 Apr 2025 AI safety and alignment
Unresolvable Prediction 3 Apr 2025 He is less sure about requiring labs to publish safety cases, because he thinks they would kind of fake it or publish a safety case made for public consumption that is not their real one. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 The AI arms race framing that people already use will have intensified by the time of superintelligence. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Factual 3 Apr 2025 The general research speedup multiplier today is about a thousand times that of the Paleolithic era. Factual · 3 Apr 2025 Economics and markets
Not yet due Prediction 3 Apr 2025 Scott Alexander suggested it might be useful to think of 'our timelines' as being like 2070 to 2100, with the last 50 to 70 years of that progress happening during 2027 to 2028 because of what he described as an intelligence explosion. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 About a year after superintelligences start wanting robots, they will be producing a million robots per month (AI 2027 scenario estimate). Prediction · 3 Apr 2025 AI, the economy and work
Unresolvable Prediction 3 Apr 2025 If a Dyson sphere is achieved within five years, it will look like AIs simulated more things than humans in a gradually increasing way. Prediction · 3 Apr 2025 AI timelines and forecasting
Mostly true Factual 3 Apr 2025 Through history, people have been reluctant to admit an AI is truly intelligent. Factual · 3 Apr 2025 Philosophy, ethics and society
Not yet due Prediction 3 Apr 2025 The AI-assisted research progress will start to pay off in 2027, the year the scenario is named after. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 There will be incredible video games after superintelligent AI. Prediction · 3 Apr 2025 Philosophy, ethics and society
Unresolvable Prediction 3 Apr 2025 The long-running trend of accelerating research progress will not stop. Prediction · 3 Apr 2025 Economics and markets
Unresolvable Prediction 3 Apr 2025 As AIs get smarter, failure modes from misunderstanding training intent will decrease. Prediction · 3 Apr 2025 AI safety and alignment
Unresolvable Prediction 3 Apr 2025 Scott Alexander said he thought the AI 2027 scenario has the fictional company OpenBrain's net approval rating falling to about minus 40 to minus 50 sometime around this point in the scenario. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 Without an arms race, advanced AIs would stay in their data centers until someone gave them permission to act. Prediction · 3 Apr 2025 AI safety and alignment
Mostly true Prediction 3 Apr 2025 The authors of the scenario think coding is what will start the intelligence explosion. Prediction · 3 Apr 2025 AI capabilities
Unresolvable Prediction 3 Apr 2025 Scott Alexander said that, at the beginning of their forecast, he and his co-authors think AI developers will start with agency training, expand agent time horizons, and get coding working well. Prediction · 3 Apr 2025 AI capabilities
Not yet due Prediction 3 Apr 2025 AI will show slightly better coding in 2025, then slightly better agents and coding in 2026. Prediction · 3 Apr 2025 AI capabilities
Not yet due Prediction 3 Apr 2025 Scott Alexander guessed that the prediction market under discussion would resolve when AI agents are actually good, which he put at roughly late 2026 in their scenario. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 An AI that mainly wants task success will get worse rather than better at alignment as recursive self-improvement proceeds, eventually pretending to be moral while watched. Prediction · 3 Apr 2025 AI safety and alignment
Own records only Prediction 3 Apr 2025 In the AI 2027 scenario, the government does not fully nationalize the AI companies but gradually brings them closer to the government. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 Scott Alexander said he thinks AI is going to be more similar to cases where there is a giant power imbalance and the groups are extremely distinct and may have different interests. Prediction · 3 Apr 2025 AI safety and alignment
Unresolvable Prediction 3 Apr 2025 After the last mistake anyone worries about, a superintelligent AI will be able to do its own thing. Prediction · 3 Apr 2025 AI safety and alignment
Unresolvable Prediction 3 Apr 2025 In the AI 2027 scenario, training against power-seeking fails and the AI learns to seek power and hide it. Prediction · 3 Apr 2025 AI safety and alignment
Unresolvable Factual 3 Apr 2025 Scott Alexander said that after he moved his blog to WordPress, it received orders of magnitude more attention. Factual · 3 Apr 2025 Their own work or organisation
Mostly true Prediction 3 Apr 2025 In the AI 2027 scenario, as AI labs become more capable they tell the government, seeking government contracts and support. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 In a world of limitless prosperity after AI, the default outcome is that people engage in mindless consumerism. Prediction · 3 Apr 2025 Philosophy, ethics and society
Unresolvable Prediction 3 Apr 2025 Converting car factories to robot factories with superintelligence could take less time than the WWII bomber conversion. Prediction · 3 Apr 2025 AI, the economy and work
Unresolvable Prediction 3 Apr 2025 If everything goes right, superintelligence-led car-to-robot factory conversion could be about three times faster than WWII bomber conversions, about a year. Prediction · 3 Apr 2025 AI, the economy and work
Unresolvable Prediction 3 Apr 2025 Once AI is superintelligent, it will probably have access to much better simulations than exist now. Prediction · 3 Apr 2025 AI capabilities
Unresolvable Prediction 3 Apr 2025 Superintelligences will be somewhat distributed throughout the entire economy, trying to expand everything. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Factual 3 Apr 2025 Speaking about Elon Musk and SpaceX, he said he thought that in 2000 people would not have expected that someone could move two or five times faster than NASA with fairly limited resources. Factual · 3 Apr 2025 Economics and markets
Unresolvable Prediction 3 Apr 2025 AIs will be solving alignment because even misaligned AIs want to align their successors. Prediction · 3 Apr 2025 AI safety and alignment
Unresolvable Prediction 3 Apr 2025 Scott Alexander put his own p(doom) at about 20%, which he described as the lowest of anyone on his team. Prediction · 3 Apr 2025 AI safety and alignment
Mostly true Prediction 3 Apr 2025 In the AI 2027 scenario, the government sees via cyber warfare that AIs are as capable as the best human hackers but deployable at huge scale. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 Other countries, especially China, will develop superintelligence around the same time, so AI will probably not stay confined to data centers. Prediction · 3 Apr 2025 AI policy and governance
Unresolvable Prediction 3 Apr 2025 AIs would spend some time, which he put at about a year (possibly more or less), getting the facilities they need for experiments, such as automated biology labs, running to clear bottlenecks. Prediction · 3 Apr 2025 AI, the economy and work
Unresolvable Prediction 3 Apr 2025 Superintelligence will be able to figure out how to build a Dyson sphere faster than unassisted IQ 100 humans would. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 Because of an AI research progress multiplier, the technological level of the year 2100 might be reached earlier than people expect. Prediction · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 3 Apr 2025 Training failures where AIs are not trained to do what developers intended will get much worse as AIs become agents. Prediction · 3 Apr 2025 AI safety and alignment
Resolved true Factual 3 Apr 2025 Nvidia originally came from gaming. Factual · 3 Apr 2025 Economics and markets
Resolved true Factual 3 Apr 2025 Scott Alexander said he thinks the AI alignment community did not really expect LLMs. Factual · 3 Apr 2025 AI safety and alignment
Unresolvable Prediction 3 Apr 2025 In future, once they have superintelligence and want robots, AI companies like OpenAI will be able to buy up many factories. Prediction · 3 Apr 2025 AI, the economy and work
Unresolvable Prediction 3 Apr 2025 Once the initial bottlenecks are solved, which he put at about a year while saying it could be more or less, AI would gradually expand to other bottlenecks until it is integrating and improving all parts of the economy. Prediction · 3 Apr 2025 AI, the economy and work
Unresolvable Prediction 3 Apr 2025 Some people may become like the Amish, living with only a subset of super technologies. Prediction · 3 Apr 2025 Philosophy, ethics and society
Unresolvable Factual 3 Apr 2025 The AI 2027 scenario existed at an early stage as a giant spreadsheet and had not yet been written up. Factual · 3 Apr 2025 AI timelines and forecasting
Unresolvable Prediction 10 Dec 2024 Scott Alexander tentatively suggested that a realistic version of the scenario might mean roughly a 33% decrease in the crime rate per 600 years. Prediction · 10 Dec 2024 Philosophy, ethics and society
Unresolvable Factual 10 Dec 2024 Scott Alexander cited the superiority of police deterrence over prison as an argument that lets the discussion sidestep the retribution issue. Factual · 10 Dec 2024 Philosophy, ethics and society
Own records only Factual 10 Dec 2024 Scott Alexander limited how much he discussed punishment-as-retribution in his original prison post because it is a culture-war scissor topic. Factual · 10 Dec 2024 Philosophy, ethics and society
Resolved true Factual 10 Dec 2024 Solitary confinement for prisoners might be more expensive than standard imprisonment. Factual · 10 Dec 2024 Philosophy, ethics and society
Resolved true Factual 10 Dec 2024 Following Roodman, Scott's original cost-benefit analysis of prison gave two conclusions: one counting prisoners' own suffering and one not. Factual · 10 Dec 2024 Philosophy, ethics and society
Mostly true Factual 10 Dec 2024 Most of the benefits of prison come from incapacitation rather than deterrence. Factual · 10 Dec 2024 Philosophy, ethics and society
Unresolvable Factual 10 Dec 2024 Scott Alexander relays that someone with experience in the field told him there are some problems with hiring police, such as requiring everyone who works in law enforcement to start as a beat cop. Factual · 10 Dec 2024 Other
Resolved true Factual 10 Dec 2024 Last month's issue of Asterisk (November 2024) contains an interview with Skarbek, which Scott thinks will be online shortly. Factual · 10 Dec 2024 Their own work or organisation
Not yet due Prediction 10 Dec 2024 Scott Alexander said, in a conditional aside, that he expects a singularity in the next few decades. Prediction · 10 Dec 2024 AI timelines and forecasting
Resolved true Factual 10 Dec 2024 In the original post, Scott said that although murder was down in El Salvador, the statistics didn't really show a decline in theft. Factual · 10 Dec 2024 Other
Not yet due Prediction 20 Feb 2023 Within five years AI may be able to make a short cartoony YouTube clip or a buggy app-style game on request, but not an Assassin's Creed-quality game. Prediction · 20 Feb 2023 AI capabilities
Resolved true Factual 20 Feb 2023 As of 2023 the technology to offer polygenic scores to consumers definitely exists. Factual · 20 Feb 2023 Technology
Not yet due Prediction 20 Feb 2023 He listed, as one item among predictions with a 2028 deadline, that an off-the-shelf AI, given a random computer game and an API that lets it play against itself as often as it wants, would reach the performance of a mediocre human, with programmers allowed to adjust it for compatibility with that game. Prediction · 20 Feb 2023 AI capabilities
Not yet due Prediction 20 Feb 2023 He expected language-model agents that act on the internet (for example, answering emails or ordering food) to be ready within five years, though he said they might not reach the reliability needed, as with self-driving cars. Prediction · 20 Feb 2023 AI capabilities
Unresolvable Factual 20 Feb 2023 The Ukraine war was the biggest geopolitical story of 2018-2023, and Scott Alexander's 2018 predictions did not anticipate it. Factual · 20 Feb 2023 Their own work or organisation
Not yet due Prediction 20 Feb 2023 2020 will have been a low point; things will not get that bad and violent again in the next five years (to 2028). Prediction · 20 Feb 2023 Philosophy, ethics and society
Unresolvable Factual 20 Feb 2023 Scott Alexander said his biggest failure was item 10 of his 2018 predictions, where he gave Roe v. Wade only a 1% chance of being overturned. Factual · 20 Feb 2023 Their own work or organisation
Not yet due Prediction 20 Feb 2023 He does not expect an AI singularity before 2028. Prediction · 20 Feb 2023 AI timelines and forecasting
Mostly true Prediction 20 Feb 2023 Scaling AI models will continue to produce gains, though less obviously than in the past five years. Prediction · 20 Feb 2023 AI capabilities
Not yet due Prediction 20 Feb 2023 His decision to devote more space to AI than to all non-AI topics combined will look prescient by 2028, even if his explicit predictions are wrong. Prediction · 20 Feb 2023 Their own work or organisation
Not yet due Prediction 20 Feb 2023 AI will not immediately revolutionize the economy, and he would be mildly surprised if it showed up as a visible break from trend in major macroeconomic indicators (GDP, unemployment, productivity); the claim is assessed by 2028. Prediction · 20 Feb 2023 AI, the economy and work
Not yet due Prediction 20 Feb 2023 Ethereum and Bitcoin will do fine by 2028 (Ethereum because stablecoins are built on its chain). Prediction · 20 Feb 2023 Economics and markets
Mostly true Factual 20 Feb 2023 As of early 2023 nobody is talking about technological unemployment, because unemployment rates are historically low. Factual · 20 Feb 2023 AI, the economy and work
Mostly true Factual 20 Feb 2023 impute.me may provide the consumer polygenic score service Scott Alexander predicted, but it has made no public waves. Factual · 20 Feb 2023 Technology
Not yet due Prediction 20 Feb 2023 Altcoins will mostly not do fine by 2028. Prediction · 20 Feb 2023 Economics and markets
Not yet due Prediction 20 Feb 2023 He said he does not expect advances in genetics by 2028 to yield anything more interesting than one or two last-ditch treatments for rare diseases, "if that". Prediction · 20 Feb 2023 Science and research methods
Not yet due Prediction 20 Feb 2023 AI's revolutionary economic effects will show up eventually in macroeconomic indicators, but not by 2028. Prediction · 20 Feb 2023 AI, the economy and work
Resolved true Prediction 20 Feb 2023 Training GPT-4 will cost $100 million. Prediction · 20 Feb 2023 AI compute, hardware and data
Not yet due Prediction 20 Feb 2023 By 2028 there will be more of a movement to ban or restrict AI. Prediction · 20 Feb 2023 AI policy and governance
Back to the list

Factual Philosophy, ethics and society

“I do think we are all descended from the groups of humans who successfully exterminated the other groups of humans, most of whom throughout history have been wiped out.”

Scott Alexander, interviewee 3 April 2025 AI 2027: month-by-month model of intelligence explosion — Scott Alexander & Daniel Kokotajlo (Dwarkesh Podcast)

All humans are descended from groups that exterminated other groups, and most groups throughout history have been wiped out.

Unresolvable The public record could not settle it.

Reasoning

Sweeping historical/prehistoric claim about all human ancestry and most groups that cannot be tested with public records.

Cite this claim

Scott Alexander, “All humans are descended from groups that exterminated other groups, and most groups throughout history have been wiped out.” (said 3 April 2025). Verdict: unresolvable. Reliability API, claim c_2794bb9b8cce, method 0.1.0+8bea457b. https://epistacklabs.com/claims/c_2794bb9b8cce

Claims without a verdict

Is a verdict here wrong, or do you speak for Scott Alexander? Reply on the claim's own page, with the form at its foot (how replies work). Verdicts are made automatically; how verdicts and scores are made.