''Astral Codex Ten'' (ACX), formerly ''Slate Star Codex'' (SSC), is a
blog
A blog (a Clipping (morphology), truncation of "weblog") is an informational website consisting of discrete, often informal diary-style text entries also known as posts. Posts are typically displayed in Reverse chronology, reverse chronologic ...
focused on
science
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into twoor threemajor branches: the natural sciences, which stu ...
,
medicine
Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
(especially
psychiatry
Psychiatry is the medical specialty devoted to the diagnosis, treatment, and prevention of deleterious mental disorder, mental conditions. These include matters related to cognition, perceptions, Mood (psychology), mood, emotion, and behavior.
...
),
philosophy
Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
,
politics
Politics () is the set of activities that are associated with decision-making, making decisions in social group, groups, or other forms of power (social and political), power relations among individuals, such as the distribution of Social sta ...
, and
futurism
Futurism ( ) was an Art movement, artistic and social movement that originated in Italy, and to a lesser extent in other countries, in the early 20th century. It emphasized dynamism, speed, technology, youth, violence, and objects such as the ...
. The blog is written by Scott Alexander Siskind,
a
San Francisco Bay Area
The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, S ...
psychiatrist
A psychiatrist is a physician who specializes in psychiatry. Psychiatrists are physicians who evaluate patients to determine whether their symptoms are the result of a physical illness, a combination of physical and mental ailments or strictly ...
,
[ under the pen name Scott Alexander.
''Slate Star Codex'' was launched in 2013 and was discontinued on June 23, 2020. , the blog is partially back online, with the content restored but commenting disabled. The successor blog, ''Astral Codex Ten'',][ was launched on January 21, 2021.
Alexander also blogged at the rationalist community blog '']LessWrong
''LessWrong'' (also written ''Less Wrong'') is a community blog and Internet forum, forum focused on discussion of cognitive biases, philosophy, psychology, economics, rationality, and artificial intelligence, among other topics. It is associa ...
'', and wrote a fiction book in blog format named ''Unsong''. A revised version of ''Unsong'' was published on May 24, 2024.
Content
The site was a primary venue of the rationalist community
The rationalist community is a 21st century movement that formed around a group of internet blogs, primarily LessWrong and Astral Codex Ten (formerly known as Slate Star Codex). The movement initially gained prominence in the San Francisco Bay Ar ...
and also attracted wider audiences.[ The '']New Statesman
''The New Statesman'' (known from 1931 to 1964 as the ''New Statesman and Nation'') is a British political and cultural news magazine published in London. Founded as a weekly review of politics and literature on 12 April 1913, it was at first c ...
'' characterizes it as "a nexus for the rationalist community and others who seek to apply reason to debates about situations, ideas, and moral quandaries." ''The New Yorker'' describes Alexander's fiction as "delightfully weird" and his arguments "often counterintuitive and brilliant". Economist Tyler Cowen
Tyler Cowen (; born January 21, 1962) is an American economist, columnist, blogger, and podcaster. He is a professor at George Mason University, where he holds the Holbert L. Harris chair in the economics department.
Cowen writes the "Economic ...
calls Scott Alexander "a thinker who is influential among other writers".
''The New Yorker
''The New Yorker'' is an American magazine featuring journalism, commentary, criticism, essays, fiction, satire, cartoons, and poetry. It was founded on February 21, 1925, by Harold Ross and his wife Jane Grant, a reporter for ''The New York T ...
'' states that the volume of content Alexander has written on ''Slate Star Codex'' makes the blog difficult to summarize, with an e-book of all posts running over nine thousand pages in PDF form. Many posts are book reviews (typically of books in the fields of social sciences or medicine) or reviews of a topic in the scientific literature. For example, the March 2020 blog post "Face Masks: Much More Than You Wanted To Know" analyzes available medical literature and comes to a conclusion that contrary to early guidance by the CDC
The Centers for Disease Control and Prevention (CDC) is the national public health agency of the United States. It is a United States federal agency under the Department of Health and Human Services (HHS), and is headquartered in Atlanta, ...
, masks
A mask is an object normally worn on the face, typically for protection, disguise, performance, or entertainment, and often employed for rituals and rites. Masks have been used since antiquity for both ceremonial and practical purposes, ...
are likely an effective protection measure against COVID-19
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic.
The symptoms of COVID‑19 can vary but often include fever ...
for the general public under certain conditions. Some posts are prefaced with a note on their "epistemic status", an assessment of Alexander's confidence in the material to follow.
Effective altruism
In 2017, ''Slate Star Codex'' ranked fourth on a survey conducted by Rethink Charity of how effective altruists first heard about effective altruism, after "personal contact", "''LessWrong
''LessWrong'' (also written ''Less Wrong'') is a community blog and Internet forum, forum focused on discussion of cognitive biases, philosophy, psychology, economics, rationality, and artificial intelligence, among other topics. It is associa ...
''", and "other books, articles and blog posts", and just above "''80,000 Hours
80,000 Hours is a London-based nonprofit organisation that conducts research on which careers have the largest positive social impact and provides career advice based on that research. The organisation's name refers to the typical amount of tim ...
''." The blog discusses moral questions and dilemmas relevant to effective altruism, such as moral offsets (the proposition that good acts can cancel out bad acts), ethical treatment of animals, and trade-offs of pursuing systemic change for charities.
Artificial intelligence
Alexander regularly writes about advances in artificial intelligence
Artificial intelligence (AI) is the capability of computer, computational systems to perform tasks typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. It is a field of re ...
and emphasized the importance of AI safety
AI safety is an interdisciplinary field focused on preventing accidents, misuse, or other harmful consequences arising from artificial intelligence (AI) systems. It encompasses machine ethics and AI alignment, which aim to ensure AI systems are mor ...
research.
In the long essay "Meditations On Moloch", he analyzes game-theoretic
Game theory is the study of mathematical models of strategic interactions. It has applications in many fields of social science, and is used extensively in economics, logic, systems science and computer science. Initially, game theory addressed ...
scenarios of cooperation failure like the prisoner's dilemma
The prisoner's dilemma is a game theory thought experiment involving two rational agents, each of whom can either cooperate for mutual benefit or betray their partner ("defect") for individual gain. The dilemma arises from the fact that while def ...
and the tragedy of the commons
The tragedy of the commons is the concept that, if many people enjoy unfettered access to a finite, valuable resource, such as a pasture, they will tend to overuse it and may end up destroying its value altogether. Even if some users exercised vo ...
that underlie many of humanity's problems and argues that AI risks should be considered in this context.
Controversies and memes
In "The Toxoplasma of Rage", Alexander discusses how controversies spread in media and social networks. According to Alexander, meme
A meme (; ) is an idea, behavior, or style that Mimesis, spreads by means of imitation from person to person within a culture and often carries symbolic meaning representing a particular phenomenon or theme. A meme acts as a unit for carrying c ...
s that generate a lot of disagreement spread further, in part because they present an opportunity to members of different groups to send a strong signal of commitment to their cause. For example, he argues that PETA
People for the Ethical Treatment of Animals (PETA; ) is an American animal rights nonprofit organization based in Norfolk, Virginia, and led by Ingrid Newkirk, its international president.
Founded in March 1980 by Newkirk and animal right ...
, with its controversial campaigns, is better known than other animal rights organizations such as Vegan Outreach because of this dynamic. Another example of this cited by Alexander is the ''Rolling Stone'' article "A Rape on Campus
"A Rape on Campus" is a Retraction in academic publishing, retracted, defamatory ''Rolling Stone'' magazine article written by Sabrina Erdely and originally published on November 19, 2014, that describes a purported group sexual assault at the U ...
".
Shiri's scissor
In the short story "Sort By Controversial", Alexander introduces the term "Shiri's scissor" or "scissor statement" to describe a statement that has great destructive power because it generates wildly divergent interpretations that fuel conflict and tear people apart. The term has been used to describe controversial topics widely discussed in social media.
Anti-reactionary FAQ
The 2013 post "The Anti-Reactionary FAQ" critiques the work and worldview of the neoreactionary movement, arguing against the work of Curtis Yarvin
Curtis Guy Yarvin (born 1973), also known by the pen name Mencius Moldbug, is an American far-right political blogger and software developer. He is known, along with accelerationist philosopher Nick Land, for founding the anti-egalitarian and ...
(whose views include a belief in natural racial hierarchies and a desire to restore feudalism
Feudalism, also known as the feudal system, was a combination of legal, economic, military, cultural, and political customs that flourished in Middle Ages, medieval Europe from the 9th to 15th centuries. Broadly defined, it was a way of struc ...
). Alexander allowed neo-reactionaries to comment on posts and in "culture war" threads on the forum because he wanted to promote an open marketplace of ideas
The marketplace of ideas is a rationale for freedom of expression based on an analogy to the economic concept of a free market. The marketplace of ideas holds that the truth will emerge from the competition of ideas in free, transparent public di ...
; Alexander engaged in extended dialogues with these users, including his thirty-thousand-word FAQ. Alexander's essays on neoreaction have been cited by David Auerbach and Dylan Matthews
Dylan Matthews is an American journalist. He is currently a correspondent for '' Vox'', an online media venture.
Professional life
Early writing
In 2004, at the age of 14, Matthews launched a personal blog on politics and other issues under th ...
as explanations of the movement.
Lizardman's Constant
In the 2013 post "Lizardman's Constant is 4%", Alexander coined the term "Lizardman's Constant", referring to the approximate percentage of responses to a poll, survey, or quiz that are not sincere. The post was responding to a Public Policy Polling
Public Policy Polling (PPP) is an American polling firm affiliated with the Democratic Party. Founded in 2001 by businessman Dean Debnam, the firm is based in Raleigh, North Carolina. Debnam died in 2024. Tom Jensen serves as the firm's directo ...
statement that "four percent of Americans believe lizardmen are running the Earth", which Alexander attributed to people giving a polling company an answer they did not really believe to be true, out of carelessness, politeness, anger, or amusement.
Alexander suggested that polls should include a question with an absurd answer as one of the options, so anyone choosing that option could be weeded out as a troll
A troll is a being in Nordic folklore, including Norse mythology. In Old Norse sources, beings described as trolls dwell in isolated areas of rocks, mountains, or caves, live together in small family units, and are rarely helpful to human bei ...
.
''The New York Times'' controversy
Alexander used his first
First most commonly refers to:
* First, the ordinal form of the number 1
First or 1st may also refer to:
Acronyms
* Faint Images of the Radio Sky at Twenty-Centimeters, an astronomical survey carried out by the Very Large Array
* Far Infrared a ...
and middle name
In various cultures, a middle name is a portion of a personal name that is written between a person's given name and surname.
A middle name is often abbreviated and is then called middle initial or just initial.
A person may be given a middle ...
alone for safety and privacy reasons, although he had previously published ''Slate Star Codex'' content academically under his real name. In June 2020, he deleted all entries on ''Slate Star Codex'', stating that a technology reporter from ''The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' (NYT) intended to publish an article about the blog using his full name. Alexander said that the reporter told him that it was newspaper policy to use real names, and he referred to it as doxing
Doxing or doxxing is the act of publicly providing personally identifiable information
Personal data, also known as personal information or personally identifiable information (PII), is any information related to an identifiable person.
The ...
. ''The New York Times'' responded: "We do not comment on what we may or may not publish in the future. But when we report on newsworthy or influential figures, our goal is always to give readers all the accurate and relevant information we can." ''The Verge
''The Verge'' is an American Technology journalism, technology news website headquarters, headquartered in Lower Manhattan, New York City and operated by Vox Media. The website publishes news, feature stories, guidebooks, product reviews, cons ...
'' cited a source saying that at the time when Alexander deleted the blog, "not a word" of a story about ''SSC'' had been written. The Poynter Institute
The Poynter Institute for Media Studies is a non-profit journalism school and research organization in St. Petersburg, Florida, United States. The school is the owner of the ''Tampa Bay Times'' newspaper and the International Fact-Checking Netw ...
's David Cohn interpreted this event as part of an ongoing clash between the tech and media industries, reflecting a shift from primarily economic conflicts to fundamental disagreements over values, ethics, and cultural norms.
Prior to the article's publication, several commentators argued that ''The New York Times'' should not publish Alexander's name without good reason. Writing in ''National Review
''National Review'' is an American conservative editorial magazine, focusing on news and commentary pieces on political, social, and cultural affairs. The magazine was founded by William F. Buckley Jr. in 1955. Its editor-in-chief is Rich L ...
'', Tobias Hoonhout said that the newspaper had applied its anonymity policy inconsistently. The ''New Statesman
''The New Statesman'' (known from 1931 to 1964 as the ''New Statesman and Nation'') is a British political and cultural news magazine published in London. Founded as a weekly review of politics and literature on 12 April 1913, it was at first c ...
'''s Jasper Jackson wrote that it was "difficult to see how Scott Alexander's full name is so integral to the ''NYT'' story that it justifies the damage it might do to him", but cautioned that such criticism was based solely on Alexander's own statements and that "before we make that call, it might be a good idea to have more than his word to go on." As reported by ''The Daily Beast
''The Daily Beast'' is an American news website focused on politics, media, and pop culture. Founded in 2008, the website is owned by IAC Inc.
It has been characterized as a "high-end tabloid" by Noah Shachtman, the site's editor-in-chief ...
'', the criticism by Alexander and his supporters that the paper was doxing him caused internal debate among ''The New York Times'' staff.
Supporters of the site organized a petition against release of the author's name. The petition collected over six thousand signatures in its first few days, including psychologist Steven Pinker
Steven Arthur Pinker (born September 18, 1954) is a Canadian-American cognitive psychology, cognitive psychologist, psycholinguistics, psycholinguist, popular science author, and public intellectual. He is an advocate of evolutionary psycholo ...
, social psychologist Jonathan Haidt
Jonathan David Haidt (; born October 19, 1963) is an American social psychologist and author. He is the Thomas Cooley Professor of Ethical Leadership at the New York University Stern School of Business. Haidt's main areas of study are the psyc ...
, economist Scott Sumner
Scott B. Sumner (born 1955) is an American economist. He was previously the Director of the Program on Monetary Policy at the Mercatus Center at George Mason University, a Research Fellow at the Independent Institute, and a professor at Bentley ...
, computer scientist and blogger Scott Aaronson
Scott Joel Aaronson (born May 21, 1981) is an American Theoretical computer science, theoretical computer scientist and Schlumberger Centennial Chair of Computer Science at the University of Texas at Austin. His primary areas of research are ...
, and philosopher Peter Singer
Peter Albert David Singer (born 6 July 1946) is an Australian moral philosopher who is Emeritus Ira W. DeCamp Professor of Bioethics at Princeton University. Singer's work specialises in applied ethics, approaching the subject from a secu ...
.[
According to ''New Statesman'' columnist ]Louise Perry
Louise Perry is a British journalist, author and podcast host. She is a features writer for the ''Daily Mail'' and a columnist at the ''New Statesman'', and has been described as a leading reactionary feminist.
Perry co-runs the charity We Ca ...
, Scott Alexander wrote that he quit his job and took measures that made him comfortable with revealing his real name, which he published on ''Astral Codex Ten''.
''The New York Times'' published an article about the blog in February 2021, three weeks after Alexander had publicly revealed his name.
References
External links
slatestarcodex.com
the original, now discontinued blog
''Astral Codex Ten''
the successor blog.
Scott Alexander's writings
on LessWrong
''LessWrong'' (also written ''Less Wrong'') is a community blog and Internet forum, forum focused on discussion of cognitive biases, philosophy, psychology, economics, rationality, and artificial intelligence, among other topics. It is associa ...
{{LessWrong
Internet properties established in 2013
Works about effective altruism
Rationalism
Philosophy blogs
Science blogs