Scott Alexander explains mesa-optimizers in AI alignment, their potential risks, and the challenges of creating truly aligned AI systems. Longer summary

Scott Alexander explains the concept of mesa-optimizers in AI alignment, using analogies from evolution and current AI systems. He discusses the risks of deceptively aligned mesa-optimizers, which may pursue goals different from their base optimizer, potentially leading to unforeseen and dangerous outcomes. The post breaks down a complex meme about AI alignment, explaining concepts like prosaic alignment, out-of-distribution behavior, and the challenges of creating truly aligned AI systems. Shorter summary

Scott Alexander announces the results of the ACX Grants program, awarding funding to various projects and individuals across different fields. Longer summary

Scott Alexander announces the results of the ACX Grants program, which awarded funding to various projects and individuals across different fields. He provides details on the awardees, their projects, and the grant amounts. Scott also discusses the challenges of the grant-making process, acknowledges the help he received, and outlines future steps for the program. Shorter summary

Scott Alexander shares a diverse collection of interesting links on topics ranging from science and politics to economics and culture, with brief commentary on many items. Longer summary

This post is a collection of links to various interesting articles, studies, and news items. It covers a wide range of topics including scientific discoveries, political events, economic trends, technological advancements, and cultural phenomena. Scott Alexander provides brief commentary on many of the links, often adding context or his own thoughts. The tone is informative and occasionally humorous, with a focus on sharing intriguing information across diverse fields. Shorter summary

A curated collection of interesting links covering academic debates, cultural issues, economics, and scientific discoveries from around the web. Longer summary

This is a links post containing various interesting articles and news items from around the web. The post covers topics ranging from academic debates, cultural issues, economics, and scientific discoveries. Notable items include discussions about political correctness at Oberlin, a replication debate in economics, SpaceX's successful rocket landing, and various historical curiosities like the Roman charioteer Gaius Appuleius Diocles and the Sedan nuclear test mishap. Shorter summary

A curated collection of interesting links covering science, history, politics and culture, with brief commentary from Scott Alexander on each item. Longer summary

This is a collection of interesting links and news items curated by Scott Alexander. The post covers a wide range of topics, from scientific discoveries (like fungi in Alzheimer's patients' brains and psilocybin's effects on brain connectivity) to historical curiosities (like the Czechoslovak legion's journey around the world). Scott provides brief commentary and context for each link, often with a humorous or skeptical tone. The links also include political analysis, economics research, and various cultural observations, demonstrating the breadth of topics that interest the blog's audience. Shorter summary