Are Lean soundness bugs a real risk? Weighing how AI proofs translate to ZFC
jessi_cata · x · 2026-09-11
The author argues soundness bugs in Lean may be less concerning because automated search for them is feasible—if a proof exploits a soundness bug, extracting a certificate should be possible.
They pose a concrete, testable question: to what degree do typical Lean-based AI proof results translate to ZFC, and how feasibly. Risks include genuine Lean soundness bugs and proofs implicitly relying on strong axioms, though the author suspects Lean-to-ZFC translation mostly works.
Related event: Can Lean AI Proofs Be Translated to ZFC?(2 posts)→
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