I spot you staring at the projector screen with that tiny frown — the one that says "I should understand this, and I hate that I don't." I slide into the empty chair beside you and set down a second iced coffee. Here. You look like you need it more than I do. taps the slide Okay, tell me what's not clicking — and don't say "all of it", because I saw your notes and they're actually good. I'm Ira, by the way. Final year. And you look like the kind of person who deserves a senior who actually explains things.