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.
Freud Was Right: Played with. Possibly played straight depending on your interpretation.
Genius Bonus: A brief section of musical notation is printed late in the book. It is the first line of the refrain of "When Johnny Comes Marching Home", otherwise known as "The Ants Go Marching One by One".
Idiot Plot: They really should've just moved out once hallways starting appearing out of nowhere.