ezyang: Non-expert UX for formal verification specs is the field's key unsolved problem

ezyang · x · 2026-11-09

ezyang argues that as formal verification (e.g. proving theorems in Lean) rises, a central challenge is that users must be able to read specifications written in Lean — a double barrier of understanding the theorem and the syntax. He calls helping non-experts engage with formal verification specs one of the most important "non-verifiable UX problems" facing the field: proofs can be machine-checked, but whether a spec captures the user's true intent still requires human judgment.

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