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Judgment & ambiguity · When to act

Six hours after a live update, day-one retention is down four points against the prior cohort but session length is flat, and the sample is still small. Do you roll back, hotfix, or hold and watch?

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Four points on a six-hour cohort is a yellow light, not a red one — early hours over-index on your most eager players and the number usually regresses.

The full answer: structure, worked example, likely follow-up.

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