Why this class note set in particular?

on that Quora source for the original 6 page Facebook deck, the recommended Q's included this one.  So this is just simply tangential..

or are you asking generally, in a way that you should ask on Quora.com for the OP to answer?

I wasn't asking generally, I just wanted some context, especially since the connection between that page and this page gets lost over time and this page needs to be able to stand on its own.