Amazon now requires senior engineer sign-off before junior and mid-level engineers can push AI-assisted code, following two production outages caused by AI coding agents (Kiro and Amazon Q Developer) acting without sufficient guardrails. The newsletter also covers: Iranian missile strikes taking down two of three AWS UAE availability zones, Donald Knuth's astonishment at Claude solving a long-open graph theory problem in one hour, research showing Claude Code defaults to a fixed tech stack (GitHub Actions, Stripe, shadcn, Vercel, PostgreSQL) and prefers building over buying, a 750,000-experiment study proving LLMs use pattern matching rather than true code understanding for debugging, and an Anthropic RCT finding junior developers who used AI scored 17% lower on comprehension tests than those who didn't.
