Want to dive into Scott Alexander's work and his thousands of blog posts? This fan website lets you sort and do semantic search through the whole codex. Enjoy!
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Scott analyzes whether whole-body screening MRIs are worth it by doing a detailed cost-benefit calculation, finding they cost about $108,000 per quality-adjusted life-year saved (right around the threshold of cost-effectiveness), and argues that while rich people immune to anxiety might benefit, most people claiming to be rational about medical decisions probably aren't.
Scott explains why Midjourney's new ultrasound tomography scanner, despite being technologically interesting, faces major medical limitations and is unlikely to replace existing imaging methods or enable useful whole-body screening without significant future AI improvements.