   However, unlike belief reports, reports of knowledge are factive: (18) could not be true unless (20) was true and Cicero did in fact denounce Catiline. Thus, unlike belief reports, reports of knowledge fail Chisholm’s third criterion. Given that (20) is extensional, it obeys the law of existential generalization. If the truth of (20) follows from the truth of (18) and if (20) satisfies the law of existential generalization, then so does (18). If so, then knowledge reports also fail to satisfy Chisholm’s first criterion.