2026-07-27 / Signal #4
We have proof automation now" - LLMs automating formal proofs in Lean for real Zstd decompressor
“AI just mathematically proved a real-world decompressor correct - formal verification is now for normies.”
8.3Weirdness
Why It Matters
AI agents handling the heavy "proof engineering" burden for verified correct code in critical infra (compression); shifts builder work from manual math to automated invariants; weird future where formal methods scale beyond academia/rockets.
Evidence
imperialviolet.org detailed blog post (July 26); HN (~188 pts); concrete theorems for FSE entropy tables, invariants, reachability proved automatically by GPT-4 in ~20 min, making dependent types practical.
Signal Read
Novelty: 9Receipts: 9Story voltage: 7Heat: 8
Source Trail
Daily scan: 2026-07-27