It might appear as a strange question, but after failing so many interviews with Goog, FB, Aws and few more similar companies - It's what I'm about to conclude. Now, I've a pool of interview questions. So, when I ask them those questions, they really don't have credible answers. So, not sure, how they are judging me.
I'm starting to believe - if as an interviewee, you come across as smarter, the interviewer might feel threatened and may fear that - if they select you - then you might progress faster than them. So, it's better for them to reject you.