Klein says that the second condition is what makes the belief subjectively immune to doubt, presumably because it is the beliefs and experiences that constitute S’s subjective perspective that render her warranted in denying all propositions that would reduce the warrant for p. However, S’s belief system might contain false beliefs that could warrant her in denying every g relevant to p—even, in some cases, where the g in question is itself true—and so her belief that p might meet condition (2)