Root-causing and responding to a rise in YouTube shares

Someone tells you that YouTube shares have gone up. Explain how you would work out what is behind the change and what, if anything, you would do about it. ```hint Trust the number before explaining it Confirm what is being counted and that the increase is real, then break the total into parts that would each point to a different cause. ``` ### Clarifying Questions - Does "shares" mean viewers sharing videos, or a stock price, given that YouTube is not traded separately from its parent company? - How big is the increase, over what period, and against which baseline? - Is the figure a raw count of shares, or a rate such as shares per view or per viewer? - What is my role here: the product manager who owns sharing, or someone looking at YouTube as a whole? ### What a Strong Answer Covers - Agreement on what the metric means, and a check that the rise is real, before any explanation - A structured breakdown of the change, by its components and by segments, to find where it is concentrated - Internal and external hypotheses, each paired with the evidence that would confirm or rule it out, checked in a sensible order - A judgment on whether the rise is actually good for viewers, creators and YouTube, not just larger - An action for each likely outcome and what to monitor afterwards ### Follow-up Questions - Shares rose, but visits from shared links stayed flat. What does that tell you? - How would your answer change if the interviewer meant a stock price? - If the rise traces back to a feature your team launched, how would you decide whether to keep it?