> I think that seeing how someone reacts unprepared is a lot more valuable I share your unpopular opinion, because the truth is generally told between the line

> I think that seeing how someone reacts unprepared is a lot more valuable I share your unpopular opinion, because the truth is generally told between the lines. At my last job I was the only one excluded from interviewing new candidates, because I am silly enough to throw ad-hoc technical questions into the discussion. My colleges managed to hire really nice people lacking basic technical skills, e.g. data analyst with 17 years of experience not knowing how to make a left join or a sub-select or PHDs not knowing what python or even a "programming language" is. We had some "fun", I can tell. And this goes both ways. I remember as an "unprepared" candidate facing the ad-hoc question "how would you deal with time series data". Through well placed questions I figured out that they have - after removing the obvious seasonal effects - only 5 data point. After my answer "I wouldn't even fit a regression line on it" the interviewer said "no one here does time series analysis, not even I" and left the room with some made up excuse. Or when the interviewer was bragging about "valuing work-life balance and having a lower churn rate than the industry average" and I figured out he is with the company since 9 months. He was just smiling and left the room with some made up excuse. Basic rule for hiring: don't let fool yourself AND don't try to fool others.