Why detector-style tools keep creating friction
A detector only sees the finished words. That means it has to infer origin from style patterns, statistical regularity, and other output-level clues. That is a weak foundation when careful human writing and polished AI-assisted writing can end up looking similar on the surface.
The result is predictable: false positives, inconsistent scores, and no clear way for an honest writer to defend their work. If the outcome matters, a probability estimate is not enough.