Scott Alexander examines Richard Lynn's controversial national IQ estimates and argues they are actually consistent with environmental rather than genetic explanations of IQ differences, while explaining common misconceptions about what low IQ means. Longer summary

Scott Alexander discusses Richard Lynn's controversial national IQ estimates, which show very low IQs in some countries like Malawi. The post addresses two main objections: that such estimates are racist, and that they seem to contradict common sense observation. Scott argues that Lynn's findings are actually more consistent with anti-racist environmental explanations of IQ differences than with genetic ones, given the huge gaps in nutrition, healthcare and education. He then explains why normal people with low IQ appear more functional than those with similar IQs due to specific syndromes, since the latter have additional deficits beyond just low IQ. The post concludes that Lynn's data suggests room for optimism about the potential impact of developmental interventions. Shorter summary

A collection of interesting links covering a wide range of topics, from scientific studies and historical facts to current events and amusing anecdotes. Longer summary

This is one of Scott's regular link posts, collecting various interesting articles, studies, and facts that caught his attention. The topics range widely from scientific research (like PTSD in Roman soldiers and genetic studies) to historical curiosities (like Byzantine titles and the history of cell phones). He also comments on current events like Silicon Valley critiques and political developments. Some links are serious academic studies, while others are more lighthearted like the rules around shooting Bigfoot. Throughout the post, Scott adds brief commentary and context to help readers understand the significance of each link. Shorter summary

Scott shares various interesting links and findings, including studies on education and IQ, brain simulation challenges, obesity surgery outcomes, and various cultural curiosities. Longer summary

This is a links post where Scott Alexander shares various interesting findings, research, and curiosities. He discusses several scientific studies, including research on education's effect on IQ from Sweden, brain simulation challenges, and obesity surgery outcomes. The post also includes various cultural and historical curiosities, like England's high tornado rate, Lenin being called a mushroom, and the Great Pyramid's eight sides. Scott provides commentary and analysis on many of the links, particularly regarding scientific research and methodology. The format is casual but informative, with Scott adding personal insights and occasional humor throughout. Shorter summary

Scott Alexander explores the concept of 'Eulering' and strategies for dealing with complex mathematical arguments in non-mathematical debates. Longer summary

Scott Alexander discusses the concept of 'Eulering,' where complex mathematical arguments are used to refute non-mathematical ideas, potentially leaving those less mathematically inclined unable to respond effectively. He uses the apocryphal story of Diderot and Euler to illustrate this concept. Scott explores the dilemma of whether to dismiss such arguments as sophistry or to accept them at face value, highlighting the trade-off between avoiding mathematical intimidation and maintaining intellectual rigor. He discusses his personal experiences with mathematical arguments in various fields, particularly focusing on statistics in scientific research. Scott proposes a strategy of 'routing around' complex mathematical objections by focusing on the underlying non-mathematical claims and evidence. Shorter summary

Scott shares and comments on various interesting links, ranging from charity history and religious debates to scientific discoveries and technological developments. Longer summary

This is a link roundup post covering various interesting articles and findings. The topics range from efficient charity and religious debates to scientific discoveries about pain medication and sleep, and from unusual technological developments to curious psychological phenomena. The post includes commentary on each link, often with Scott's characteristic humor and skepticism, particularly about certain scientific claims. The links cover subjects as diverse as tiny mobile houses, digital-biological converters, and unusual seizure triggers. Shorter summary

Scott Alexander debunks a study claiming Victorians were smarter than modern people, showing it's based on flawed data comparison and ignores crucial factors like selection bias and demographics. Longer summary

Scott Alexander critiques a study claiming Victorians were more intelligent than modern people based on reaction time measurements. He argues the study's conclusion is flawed due to significant selection bias in the Victorian data, which primarily came from wealthy, educated individuals. The modern data, in contrast, was more representative of the general population. Scott points out that the difference in reaction times can be explained by sampling from the top 20% of Victorian society versus a broader modern sample. He also highlights how the study ignores important factors like race and regional variations in IQ, which could further account for the observed differences. Scott concludes by urging readers not to cite this study as evidence for declining intelligence or civilization. Shorter summary