You Don't Know?

I can understand your asking what kind of books we are looking for. However, when I ask you what kind do you have you seem only to be able to answer in generalities. You are not the first person to do this nor will you be the last. Effectively it is as if your answer to the question of what kind of books do you have is "I have books". I just cannot understand why you cannot tell me or know what you own. I don't expect a complete or accurate list but some general inkling doesn't seem too much to ask for.