Thesis Memory preserves knowledge but never produces it: the Indian schools were right to exclude it
Where it stands
For forty years of reading Śaṅkara I have accepted, almost without noticing, a rule that most of the classical Indian schools share: memory is not a pramāṇa, not a means of valid knowledge in its own right.
The Nyāya divide cognition into remembering and experiencing, and only experience can be knowledge in the full sense. The Mīmāṃsakas and the Advaitins add a novelty condition: a valid cognition must be of something not already known. Memory fails it by definition. It gives you back what you had; it never gives you anything you did not have. Nobody says memory is useless or usually false. It is simply not a source.
I recently learned that analytic epistemologists have the same argument under different names. "Preservationists" say memory only transmits justification from the original experience. "Generativists" say memory can sometimes produce justification the belief never had.
My thesis: the preservationists are right, and the Indian schools saw why. Whatever you gain in remembering, you gain from some other source working on what memory hands back. Memory is the treasury, not the mint.
I'll defend this against all comers, but I'd especially like to hear the generativist case put at its strongest.