Each new video in a format does worse. Fatigue, or regression to the mean?
Novelty & durationHardProblem. A format's first video hit 160M views. The next three in the format did 120M, 105M and 95M. A producer says the format is fatigued and should be retired. The channel's videos typically land around 90M. How do you tell real fatigue from regression to the mean?
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