William: There's a prep sheet for the trip, and I tried one of the extra credits. (pulls out the sheet from his backpack] Would you take a look at it?
Oliver: Yeah, of course.
William: I meant... Felicity.
Oliver: I'm sure you did, yep.
William: I'm sorry. It's a math problem from the hyperbolic geography in marine organisms, like coral.
Oliver: I do know what coral is, but that's okay.
Felicity: This is a high dimension math problem most people don't get until they're in... 12th grade AP. And it's perfect.