Scott's monthly roundup of interesting links covering AI policy developments, technology news, cultural observations, and scientific research from December 2025. Longer summary

This is Scott Alexander's monthly collection of links and commentary covering diverse topics. Major themes include AI policy battles (chip sales to China, regulation debates, political campaigns), startup news (Substrate fraud allegations, Tornyol mosquito drones), and scientific updates (COVID origins, Hitler's DNA, lactose intolerance). The post also covers cultural topics like the first millennial saint, Dimes Square commentary, and political polling about ideal Democratic candidates. Scott provides his characteristic mix of straightforward reporting, skeptical analysis, and occasional humor throughout the 53 linked items. Shorter summary

Scott reviews updates from two cohorts of ACX Grants recipients (from 2021 and 2024), analyzing their progress and sharing lessons learned about what makes grants successful. Longer summary

Scott Alexander reviews progress updates from two cohorts of ACX Grants recipients - the first cohort from 2021 (after 3 years) and the second from 2024 (after 1 year). The post methodically goes through each grant's status, with many showing significant progress in areas like AI safety advocacy, animal welfare, scientific research, and political lobbying. Scott then analyzes patterns in what made grants successful, finding that lobbying organizations and animal welfare projects were particularly effective, while scientific grants were harder to evaluate. He concludes that while not all projects succeeded, the $3 million program generated good value through both direct impact and startup creation, and he plans to continue it with some adjustments. Shorter summary

Scott provides updates and reader responses to his previous 'Quests and Requests' article, addressing the status and potential of each proposed project. Longer summary

This is a follow-up post to Scott's 'Quests and Requests' article, addressing the current status and responses to each of the eight projects proposed. Scott provides updates, shares relevant comments and offers from readers, and gives his thoughts on the progress and potential of each quest. He also clarifies his intentions and expectations for these projects, encouraging self-organization among interested parties. Shorter summary

Scott Alexander summarizes and responds to reader comments on his article about billionaire wealth, addressing various economic and ethical perspectives. Longer summary

This post summarizes and responds to reader comments on Scott Alexander's previous article about billionaire wealth and replaceability. It covers topics like natural monopolies, the role of luck vs. talent in business success, risk-taking by entrepreneurs, the political power of billionaires, and ways to test the replaceability of inventors and innovations. Scott engages with various perspectives while adding his own thoughts and clarifications on these complex economic and ethical issues. Shorter summary