Literary quotes and references, like The Catcher in the Rye thing, being an example - in Innocence, where this is most prevalent, all of the quotes have relevance and impart insight in the particular scene & the movie at large, sound like something the characters would plausibly think about (this aspect is admittedly a tad overdone/shaky), and are explained within the context of the scene without requiring of the audience prior knowledge of the work being referenced. Although this kind of thing is done incompetently by many more creators than Kamiyama, to be fair. Oh look, we have a cover to a book in our movie! Guess you better go read it to find out what it means! DEEP! Namedrop Sartre for bonus points! But this is the kind of thing folk will lazily accuse Oshii of when it's demonstrably untrue.