What a Plot Hole Actually Is
A plot hole is not an unanswered question or a loose narrative thread. It is a logical impossibility: a moment in the story where the cause-and-effect chain breaks in a way that cannot be explained by any reasonable reading. If a character appears in two places simultaneously without explanation, that is a plot hole. If a character acts on information they could not have had, that is a plot hole. If the timeline makes an event impossible, that is a plot hole. Ambiguity is not a plot hole. Surprise is not a plot hole. Only genuine logical impossibility qualifies, and the distinction matters because different problems require different solutions.