Gary Marcus: Math Progress Verified by Lean Doesn't Extrapolate to AGI
GaryMarcus · x · 2026-09-22
Gary Marcus argued that while using Lean—a symbolic tool—to verify formalizable math problems represents genuine progress, the real world mostly resists that level of formalization and current techniques fall short there. He contends many people are wrongly extrapolating from progress on a narrow class of math problems to progress on AGI and science in general, which he sees as far less clear.
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