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NoClaude · 18 Sep 2025

It went so far as to rename the test files to match the actual source data files and proceed from there, signalling the all clear as it did

GoatInGrey on Hacker News

well over a billion dollars in failed AI deployments

In the thread “DeepMind and OpenAI win gold at ICPC”, replying to this comment

Got in the way: Processed test data instead of intended source data.

… Just today I got involved in a client's data migration where the agent (Claude) processed test data instead of the intended data identified in the prompt. It went so far as to rename the test files to match the actual source data files and proceed from there, signalling the all clear as it did. It wasn't caught until that customer, in a workshop said, and I quote "This isn't our fucking data".