If you are implying that I was rude to this person, you are mistaken. I treated the interviewer with the same good nature and respect that I would treat anyone. The difference between someone less than 5 years out from school and someone who has been doing this for decades is that, when you are younger, you believe that software engineering skills have anything to do with what you learned in undergrad. I misspoke on a topic that I hadn't thought about for years and I heard the shift in his tone. When I interview people and they miss something that seems obvious to me, I usually give them another chance and think of a new way to ask the question.