Scott investigates the correlation between intelligence and neuron count, exploring various theories before suggesting that more neurons allow for less polysemantic (overlapping) representations of concepts. Longer summary

Scott explores why intelligence correlates with neuron count across species, humans, and AI models, despite this correlation not being immediately intuitive. He examines various hypotheses about how having more neurons could help with complex pattern-matching tasks like IQ tests. After discussing several possibilities including pattern storage and matching, he settles on polysemanticity as a potential explanation: fewer neurons means each neuron must encode multiple concepts, reducing precision. The post concludes with insights from an expert suggesting that larger neural networks (biological or artificial) can better approximate complex functions and maintain multiple hypotheses simultaneously. Shorter summary

TracingWoodgrains and Michael Pershan analyze the effectiveness of ability grouping, acceleration, and personalization software in serving advanced students in the education system. Longer summary

This post is an entry to the Adversarial Collaboration Contest by TracingWoodgrains and Michael Pershan, discussing whether the education system adequately serves advanced students. It examines three main approaches: ability grouping, acceleration, and personalization software. The authors review research on each approach, discuss their pros and cons, and explore the tensions between different educational goals. They conclude with practical advice for parents, educators, and educational reformers. Shorter summary

A collection of interesting links covering various topics from scientific studies, social issues, and current events, including problems with brain imaging studies, AI safety developments, and surprising research findings. Longer summary

This is one of Scott's regular link posts where he shares and briefly comments on interesting articles and studies he's found. The post covers diverse topics including medical research critique (particularly brain imaging and psychiatric studies), current events (like the Chinese government's actions against Buddhist monks), and technological developments in AI safety. Scott adds his characteristic analytical commentary to many of the links, pointing out surprising implications or potential flaws in the studies. The format is casual but informative, with Scott often expressing personal opinions or humorous observations about the material he's sharing. Shorter summary