David Deutsch: Proofs Are No Longer a Useful Proxy for Mathematical Progress

francoisfleuret · x · 2026-10-15

Physicist David Deutsch, responding to 3Blue1Brown's video on "the last IMO problem AI couldn't solve," agrees that while proving things has served as a useful proxy for mathematical progress for millennia, it no longer does. He goes further, arguing there can never be a formalisable criterion for mathematical progress itself — a notable philosophical take on AI reaching the frontiers of mathematics.

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