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An AI-Written Code Comment Saying 'the Usual Case' Invents a Property of Your System That Never Existed
Entropic Thoughts dissects two plausible-looking generated code comments. The first says a cached flag count means the walk can be skipped "(the usual case)", a parenthetical that would be genuinely valuable information if it were true, except the model has no idea what counts as usual in that domain, so it tricks every future reader, human and model, into believing a property that does not exist. The second defends keeping connection pooling so "large domestic orders stay fast"; from a human that implies someone thought it through, from a model it reads as defensibly preserving code it had no business ruling on. The argument lands on comment provenance as a practical review problem, not a style one.
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