//"Good morning. Today we're going to talk about augmenting data structures. And this is a -- Normally, rather than designing data structures from scratch, you tend to take existing data structures and build your functionality into them. And that is a process we call data-structure augmentation. And this also today marks sort of the start of the design phase of the class. We spent a lot of time doing analysis up to this point. And now we're still going to learn some new analytical techniques"//