Indeed, we do talk more about good contracts with the Turtle alphabet than we do about global state. But it's a small part of the conversation. The `World` (wh

Indeed, we do talk more about good contracts with the Turtle alphabet than we do about global state. But it's a small part of the conversation. The `World` (which is based on the concept from Racket's Universe library) does indeed get broken down into smaller objects. We talk about how to do that too. The idea is to lead this naturally into more OO stuff next semester, but we talk for a while about how we can use dictionaries to structure data at least.