Who is the narrator, can she or he read minds, and, more importantly, can we trust her or him?
Narrative Technique: First Person (Central)
One of the reasons we get to know Sam so well is because he tells us his story directly. You might have noticed how he uses I whenever he's talking—that's what we call a first person narrator. It's like he's giving us the details over coffee. In fact, Sam even talks directly to us. Check it out:
So you know everything. There's nothing more for me to say. I don't know whether you thought I was making up that stuff about the future, or whether you thought I'd lost it, but it doesn't really matter now, does it? (13.1)
When he says "you," he's addressing the readers (ahem, us) directly. That's one way of making sure we're still paying attention. He asks what we're thinking, and calls us out on it, too. Instead of pretending we aren't listening, Sam removes the barrier between us and invites us in.