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LessWrong is an online forum and community dedicated to improving human reasoning and decision-making. We seek to hold true beliefs and to be effective at accomplishing our goals. Each day, we aim to be less wrong about the world than the day before. A community blog devoted to refining the art of rationality
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News
Finding the Seams of Perception — LessWrong
1+ mon, 1+ day ago (466+ words) The tricky thing about experiencing the territory beneath our maps is that we habitually map over the gaps as fast as we can find them — the act of seeing that reality isn't what we believed itself changes our belief. Every…...
Creative math research by AI as the latest sign of the end — LessWrong
1+ mon, 3+ day ago (902+ words) Yesterday I sat down with GPT 5.6 Sol High to do some brainstorming. The topic was one of the less appreciated Millenium Problems (the Birch and Swinnerton-Dyer conjecture), and the initial prompt started life as a question on Quora. Number theory…...
Does post-training quantization change welfare-relevant indicators in open-weight language models? — LessWrong
1+ mon, 3+ day ago (320+ words) Epistemic status: Experimental framework created over a period of ~2-3 days during a hackathon at my home, and fairly heavily vibe coded. Expect some of this to be rough around the edges. I am currently in the process of designing a…...
Claude summarizes behavior as significantly less misaligned when the actor is Claude vs another model — LessWrong
1+ mon, 3+ day ago (26+ words) (This is a lower-effort research update. It reflects my current beliefs/understanding, but is less robust than other research I'm working on. It refl…...
Geometric Rationality acts linearly in additive scenarios — LessWrong
1+ mon, 1+ week ago (359+ words) Is this the Nash bargaining solution? Yes. In fact it is the only symmetric[5] pareto-optimum within these coalitions, and those are the only coalitions that make sense if you want symmetry, because the only symmertic coalition actions are linear combinations…...
An Amicable Ape — LessWrong
1+ mon, 1+ week ago (158+ words) revisiting alignment The following series of posts revisits the idea of goal alignment between humanity and artificial intelligence, and within human…...
Why biological weapons are scary, and what we can do about it — LessWrong
1+ mon, 1+ week ago (746+ words) What’s the biggest thing you think you can take in a fight? According to a YouGov poll, 6% of Americans reckoned they could beat a grizzly bear bare-handed. But lest you take this as evidence of a, let’s say, optimistic national…...
II. Anthropic reasoning with duplication is not consistent with probability properties — LessWrong
1+ mon, 1+ week ago (1417+ words) tl;dr • 1. There is an impossibility result in anthropic probability: no reasonable probability theory can stay consistent across a duplication even…...
Resources for finding neglected scientific problems (beyond EA)? — LessWrong
1+ mon, 1+ week ago (199+ words) Hi all, mechanical + electrical engineering undergraduate who enjoys research and hopes to pursue a career in it. While I’m not especially interested in the main EA cause areas (AI safety, biosecurity, cybersecurity, etc.), I’d still like my research to have…...
AI in Mathematics, 2026: From Assistant to Top Researcher — LessWrong
1+ mon, 1+ week ago (295+ words) Seven weeks ago, mathematicians said AI could execute but not decide direction. Then a Fields medalist won his medal and left academia for OpenAI the same day. This is an expanded and updated version of “AI in math is going…...