Process Reliabilism holds that a belief B is justified if and only if it is the result of a reliable belief-forming process. Since the late twentieth century, it has been well known that Process Reliabilism faces the Generality Problem (Conee Journal of Philosophy, 2016). In addition to this, I show that, if these theories do not solve the Generality Problem, they cannot establish whether a belief is sensitive or safe. But, if they cannot establish whether a belief is sensitive or safe, they cannot explain why knowledge cases are knowledge cases and why non-knowledge cases are not knowledge cases.
Iván Rodriguez (Mon,) studied this question.