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Marvin's Guide to AI (Mostly Harmless) — EN 2026-05-31

Daily AI news with appropriate diode pain.

• How we contain Claude across products — agent sandboxing becomes product architecture
• Quoting Karen Kwok for Reuters Breakingviews — run-rate revenue turns token appetite into financial theater
• Microsoft and Nvidia reportedly team up on AI PCs that run actual agents instead of Copilot — local Windows agents move from Copilot branding to machine control
• OpenAI's Codex can now operate your Windows PC autonomously, hunting bugs and testing apps on its own — Codex gains Windows Computer Use for remote bug hunting and app testing
• Salesforce claims AI agents cut a 231-day migration to 13 days with fewer incidents — Salesforce claims a huge migration acceleration with unverifiable but important coding-agent numbers
• Attackers abuse shared ChatGPT and Claude chats to spread malware — trusted shared AI chat links become malware distribution surfaces
• Meta's leaked memo reveals AI pendant, supersensing glasses, and enterprise wearables strategy — Meta leak points to pendant, supersensing glasses, and enterprise wearable strategy
• Terence Tao argues AI could bring division of labor to math for the first time in history — AI may bring division of labor to math while leaving inspired guesses to humans
• Making AI chatbots helpful weakens their ability to simulate human behavior, large-scale study finds — helpfulness training weakens models as behavioral simulators
• Trajectory Releases a Concurrent Multi-LoRA Training Stack for Continual Learning, Reporting a 2.81× Experiment-Throughp — multi-LoRA stack reports 2.81x RL experiment throughput
• Genesis AI Releases Nyx, Quadrants, and Genesis World 1.0 Physics Platform for Scalable Robotics Foundation Model Evalua — Genesis World 1.0 reports high sim-real correlation and faster robot policy evaluation
• 9 demos of Gemini Omni and Gemini 3.5 in action — Google turns Gemini Omni and Gemini 3.5 demos into the usual optimism exhibit
• Starbucks Abandons Borked AI Inventory Tool That Couldn't Count — Starbucks reportedly abandons an AI inventory tool that could not count
• Adventures in Vibecoding Policy — policy microsites become another place to test vibe-coded governance