LessWrong
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Type of site
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Internet forum, blog |
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| Available in | English |
| Created by | Eliezer Yudkowsky |
| Slogan(s) | A community blog devoted to refining the art of human rationality |
| Website | lesswrong |
| Alexa rank |
 53,215 (February 2015[update]) |
| Registration | Optional, but is required for contributing content |
| Launched | February 1, 2009 |
| Current status | Active |
| Written in | Python, JavaScript, CSS (powered by Reddit source code) |
LessWrong, also written as Less Wrong, is a community blog and forum focused on discussion of cognitive biases, philosophy, psychology, economics, rationality, and artificial intelligence, among other topics.
LessWrong promotes lifestyle changes believed to lead to increased rationality and self-improvement. Posts often focus on avoiding biases related to decision-making and the evaluation of evidence. One suggestion is the use of Bayes' theorem as a decision-making tool. There is also a focus on psychological barriers that prevent good decision-making, including fear conditioning and cognitive biases that have been studied by the psychologist Daniel Kahneman.
LessWrong developed from Overcoming Bias, an earlier group blog focused on human rationality, which began in November 2006, with artificial intelligence theorist Eliezer Yudkowsky and economist Robin Hanson as the principal contributors. In February 2009, Yudkowsky's posts were used as the seed material to create the community blog LessWrong, and Overcoming Bias became Hanson's personal blog.
In July 2010, LessWrong contributor Roko posted a thought experiment to the site in which an otherwise benevolent future AI system tortures simulations of those who did not work to bring the system into existence. This idea came to be known as "Roko's basilisk," based on Roko's idea that merely hearing about the idea would give the hypothetical AI system stronger incentives to employ blackmail. Yudkowsky deleted Roko's posts on the topic, calling it "stupid". Discussion of Roko's basilisk was banned on LessWrong for several years before the ban was lifted in October 2015.
In self-selected surveys on the site, the LessWrong userbase identifies as atheist (53%), consequentialist, and are demographically American (42%), white (66%) and male (60%). 3% of surveyed users identify as transgender, ten times the fraction normally found among American adults.
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