Scott Alexander reviews a $100,000 debate on COVID-19 origins, where the zoonotic hypothesis unexpectedly won against the lab leak theory. Longer summary

Scott Alexander reviews a debate on the origins of COVID-19 between Saar Wilf, who supports the lab leak hypothesis, and Peter Miller, who argues for zoonotic origin. The debate was part of a $100,000 challenge by Wilf's Rootclaim project. Miller won decisively, with both judges ruling in favor of zoonotic origin. Alexander analyzes the debate format, arguments, and aftermath, discussing issues with Bayesian reasoning, extreme probabilities, and the challenges of resolving complex scientific questions through debate. Shorter summary

A review of 'Viral' by Chan and Ridley explores competing hypotheses about COVID-19's origins, critiquing institutional responses and emphasizing ongoing uncertainty. Longer summary

This book review discusses 'Viral' by Alina Chan and Matt Ridley, which explores the origins of the COVID-19 pandemic. The reviewer summarizes key points from the book, including evidence for both natural and lab leak hypotheses, the history of lab leaks, the relevance of Wuhan's location, and criticisms of institutional responses. The review also covers technical evidence and debates around it, while emphasizing the reviewer's uncertainty about the pandemic's true origin. The author concludes by reflecting on the role of amateur researchers and the importance of scientific self-correction. Shorter summary