Do I Really Need to Read This?

I've been stuck on page 524 of Knapp's Contract casebook for nearly the past hour. It's a Notes and Questions page. It has me seriously reevaluating the worth of reading the Notes and Questions section of each casebook.

Here's the thing, some professors refer to some of the material in them, others refer to them rarely if at all. Sometimes they help clarify a point being made in the principal case other times they do nothing but muddle everything up. Sometimes they add a substantive point or two that isn't found in the principal case; as in an exception or differences between jurisdictions. The one constant is that I always seem to spend way too much time on the Notes and Questions.

I guess I could skip the Notes and Questions entirely unless I'm in need of clarification and if the professor refers to a note or question, I can always go back and read it afterwards.