Sorry, I didn’t read that book, but textbooks aren’t ‘the say all, end all’. Obviously everybody employs different interviewing styles and everywhere you go theres going to be a different cast of characters. The ability of being able to read people and plan your game based on how they might react to your answers is key.
I never implied that he ‘should tell them’ he never screwed up or is perfect because nobody is. Your recovery from this question will show them how you would naturally handle a negative or unfortunate event. Remain calm, don’t ramble, it was only a suggestion. I was exemplifying a situation, not ridiculing your answer. gosh!