A change that nets to zero but helps some, hurts others
Heterogeneous effectsHardProblem. A delivery-experience change shows ~no average effect. Someone says "kill it." You suspect it helps some segments and hurts others. How do you investigate and decide?
Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.