Let's say sufficient instances for the student to prove his/her point - the student used "all" in the AI prompt, but really meant as many as possible from which they could pick and choose. Is it ethical or should it be viewed as cheating?
What is the general take on the ethics of using AI as a much more powerful search engine? For example, "Find all occurences in the text where Odysseus' will is overridden by the Gods." The question is not something that would be directly set by an instructor, but might be required to substantiate an interpretation that a student is aiming for.
Finding something like this is difficult and requires reading the text closely. But with AI, you could get away by reading around the passages returned by AI.
If we were to accept and enforce this rule, billions of followers of some major religions would not be eligible to be part of a free and open society.