Show HN: Formally verified 3D CSG: Trust 93 lines spec, not 1000 lines AI code

Hacker News reports developer permute has built the first formally verified implementation of three-D mesh intersection. Rather than asking humans to read over a thousand lines of AI code, this project guarantees correctness using a ninety-three-line formal specification and the Lean type checker. The AI autonomously generated over sixty thousand lines of proofs, all verified at compile time. A web demo lets you try it in your browser.

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