premise: There were a couple instances where friends of mine had tried to check on the status of the books in the library but were not permitted to go in at that time. So I am only assuming that those books are there now because I am being told that they are. But as for myself walking into a library and seeing them there, I did not.
hypothesis: The agent hasn't viewed the books in question
reason: The agens states- But as for myself walking into a library and seeing them there, I did not.