These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Genius Bonus: How about multiple allusions of varying degrees of audience accessibility on every single page? Stoppard says, "You end up with two plays" in regard to how an audience's reference pool affects the perception of the play. (Gussow interview Feb 1995)