LessWrong (sometimes spelled Less Wrong) is a community blog and forum dedicated to improving epistemic and instrumental rationality.


In November 2006 the group blog Overcoming Bias was launched, with Robin Hanson and Eliezer Yudkowsky as its primary authors (Hanson 2009). In early March 2009, Yudkowsky founded LessWrong, repurposing his contributions to Overcoming Bias as the seed content for this "community blog devoted to refining the art of human rationality" (Alexander 2014; Bloom 2019a). This material was organized as a number of "sequences", or thematic collections of posts to be read in a specific order, later published in book form (Yudkowsky 2015). Shortly thereafter, Scott Alexander joined as a regular contributor.

Around 2013, Yudkowsky switched his primary focus to writing fan fiction, and Alexander launched his own blog, Slate Star Codex, to which most of his contributions were posted. As a consequence of this and other developments, posting quality and frequency on LessWrong began to decline (Alexander 2017). By 2015, activity on the site was a fraction of what it had been in its heyday (Bloom 2019b)....

(Read More)