Opus 5.5 repeats the exact spoon-manufacturing mistake it was warned about

ivan_bezdomny · x · 2026-10-04

A user had Opus 5.5 design a spoon manufacturing process; it made obvious mistakes. Restarting a fresh instance and explicitly warning it to avoid those exact errors, the model produced essentially the same flawed output again — only with a different 'snazzy' UI. Author bets a third run would repeat the same error, illustrating weak real error correction in long procedural tasks.

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