Time spent is flat but Reels is growing — what's going on?
Diagnose a problemMediumProblem. Over the last quarter, Instagram's Reels watch time grew nicely, but overall time spent on Instagram is flat. Your PM asks: is that a problem? Diagnose it.
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.
Interview tips
Strong-answer signal: spotting cannibalization, converting flat minutes into a monetization-weighted revenue read, and framing it as a strategic trade with the gap sized. Common trap: declaring "flat time spent is fine" (or "is a disaster") without decomposing by surface and weighting by value.