The Pristine Fallacy is a research hypothesis paper by Lee Sharks about chat data used in model training.
It argues that human-written text can still carry model-mediated distributional patterns. Proposed mechanisms include long-term user habituation, within-conversation convergence, and accommodation to a specific model.
The paper defines a four-dimensional contamination gradient and proposes tests and mitigation strategies.
Its central empirical predictions remain untested. It does not establish that any specific provider trains on private conversations or that all chat input is unsuitable.