even more socially savvy than "don't feign surprise" is "don't ask questions that might lead to answers that might lead the asker to feign surprise". In any sit

even more socially savvy than "don't feign surprise" is "don't ask questions that might lead to answers that might lead the asker to feign surprise". In any situation where you're assuming the role of teacher, assume that the answer to any "do you know about ..." question is always no. It's much easier to preface a question with "forgive me if you already know this but ...", than to go through the feigned surprise song and dance.