Years back I even realized that I was far over-preparing for interviews because I like to be prepared. So I had a canned response to basically every question that was going to be asked. Not surprisingly, I didn't get any of those jobs.
Who would have guessed that hiring managers aren't looking to hire robots with zero personality and that an interview is not a trivia game show that the hiring manager is just adding up points from "correct" answers to see who wins and nothing else.