Design a switchback test for a real-time dispatch change
Test selectionHardProblem. You want to test a change to the real-time dispatcher (how orders are assigned to shoppers). Why a switchback, and how do you design it to avoid bias?
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.