I had an interviewer once interrupt me and say there was no way I would have studied gray codes in college. I still don't know if that was some bias that I went

I had an interviewer once interrupt me and say there was no way I would have studied gray codes in college. I still don't know if that was some bias that I went to a "provincial school" in their mind or that they hadn't noticed my Master's degree or that my degree program also involved a lot of hardware and electronics work or just that they didn't study it in college and were secretly telling me how useless their fancy "West Coast Ivy" degree program was for them. I made the mistake of letting that company bring me back for a second "less technical" round of interviews, but I shouldn't have.