Asking brain teasers and CS "fundamental" questions is fine as long as there is a good answer to those two question Asking brain teasers is fine as long as tha

Asking brain teasers and CS "fundamental" questions is fine as long as there is a good answer to those two question Asking brain teasers is fine as long as that's what your technical people actually do all day -- sit around and ask each other wacky logic problems they half-remember reading about on the internet somewhere, continually trying to one-up another (and if you don't answer with 90 seconds or so, you get fired, on the spot). But for most software engineering roles, not so much.