Do not make thoughtless statements that diminish what the company or interviewer does. A candidate I recently interviewed applied for an analyst position that required expertise using the Argus software. He told me that although he did not know Argus, the program was very easy and he could master it in a day or two. Given that it took me personally much longer than a day or two to develop a strong expertise using the software, the candidate should have simply told me that I was an idiot. Needless to say, this candidate did not get very far in the interview process.