LessLong Post Questions Lean4's Unproven Consistency

A LessWrong essay argues that Lean4's own consistency has never been proven, undermining blind trust in formalized proofs. Related posts cite foundational gaps and benchmark contamination as reasons Lean proofs should not be treated as a silver bullet.

2026-10-11 ~ 2026-10-12 · 2 related posts

• Lean4 proofs are not a silver bullet: consistency gaps, soundness bugs, and flawed benchmarks — elie · 2026-10-11
• A critical look at Lean4: why no one can prove the proof assistant is consistent — thomasahle · 2026-10-12