What I don't understand is, what did the candidate do with AI? Did they use the AI as a coach? Did they use it to suggest edits to the resume?
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I once interviewed a candidate who was given my questions in advance. (I should point out that it was quite time consuming for me to design an interview, so I couldn't just make up new questions for every candidate.)
When the candidate started taking the "schoolboy" tone of a well-rehearsed speech, I realized that they had practiced their answers, like practicing for an exam. I immediately threw in an unscripted question, got the "this wasn't supposed to be on the test" response, and ended the interview.