Encountered such situation couple of times. Pokerface interviewers asking in-depth questions (e.g. domain knowledge, not necessarily data structures or algorith

Encountered such situation couple of times. Pokerface interviewers asking in-depth questions (e.g. domain knowledge, not necessarily data structures or algorithm smartassery), with minimal feedback. Learning basically. Quite cynical because it's good to talk basically, exchange knowledge and experience - I've always taken it as a common sense. Once I detect pokerface jokers I answer "no clue" for the simplest questions.