Having been programming a while, when confronted with "Well, it got the answer 4.7, and we figured out 2, and we can't figure what the other 2.7 are", I wouldn'

Having been programming a while, when confronted with "Well, it got the answer 4.7, and we figured out 2, and we can't figure what the other 2.7 are", I wouldn't leap to "Wow, the AI has found a whole new physics". I'd go with "bug", until I can very concretely describe otherwise.