Matt Pocock at AI Engineer Paris: Opus 5 'got addicted to writing tests that just repeat the code back to itself'
X / X (Matt Pocock)·low signal
A widely shared Sep 25 post quotes Pocock's 22-minute talk at AI Engineer Paris (Station F, Sep 23-24) on stopping agents from writing tautological tests. Those are tests that re-assert a constant or implementation detail instead of behavior. It matches Pocock's own Sep 21 post, "No tautological tests," and his earlier advice to add a no-change-detector-tests rule. The talk video isn't indexed yet, so the exact quote rests on a third-party account.