Week 2 highlights follows Anthropic’s Fable launch in real workflows, from safety gates and API refusals to autonomous coding, 3D world-building, and a Claude-run Twitter experiment. Geoffrey Irving and Daniel Murfet argue for alignment theory and guarantees before recursive self-improvement, while prinz tests Fable on legal reasoning and monitoring. Rahul Sonwalkar, Shlok Khemani, Tom McGrath, and Andrew Moore add field reports on data agents, hybrid authorship, interpretability, context systems, token economics, and power concentration.Mercury: Run your finances with virtual cards, spending limits, merchant/category locks, and AI-friendly tools like API keys, MCP, and CLI. Check out Mercury at https://mercury.comLINKS:Claude Fable 5 announcementJulius AI platformRahul Sonwalkar homepageNate Jones homepageShlok Khemani homepageFrontierCode benchmark blogLovelace AI companyAndrew Moore Wikipedia profileGeoffrey Irving homepageDaniel Murfet LessWrong profileSequent Research announcementTimaeus research organizationAutomated Alignment paperGoodfire AI companyTom McGrath homepagePredictive data debugging toolprinzbench legal benchmarkUnit distance conjecture disproofDario Amodei policy essayVending-Bench 2 benchmarkAndon Labs siteRecursive Superintelligence startupSakana AI companyPostTrainBench benchmarkThoughtful Lab companyUnit distance conjecture arXivGlean Work AI IndexAI Treaty open letterKarina Nguyen homepageSponsor:Claude: Claude by Anthropic is an AI collaborator that understands your workflow and helps you tackle research, writing, coding, and organization with deep context. Get started with Claude and explore Claude Pro at https://claude.ai/tcr