A model upgrade improves one customer segment and hurts another. How would you decide what to do?

Instruction: Explain how you would handle a change that creates slice-level winners and losers.

Context: Tests how the candidate diagnoses the problem, chooses the safest next step, and reasons through recovery. Explain how you would handle a change that creates slice-level winners and losers.

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I would not average the segments together and call it progress. If one important segment got worse, the question is whether that segment matters enough to block release, require routing, or justify a segmented deployment.

I would compare the magnitude of the gain and loss, but also the strategic importance and...

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