Maybe that's what they've bonded over, he thinks, the whole world ending thing. It's not something he can exactly relate to but he thinks he's come pretty close. If it weren't for his actions (and also probably, definitely because of some of them) Nate's world would probably have gone much the same way. More than once he's found himself trying to avert an apocalypse of some kind, which he thinks is totally unfair and he deserves a pay rise. If he were getting paid, that is.

"That sounds so boring," Nate says, unable to stop himself before he says it. But a train that just goes around and around in an arctic wasteland for eternity? Fuck that. "When you said lived on a train I didn't think you mean like, lived on a train, jesus."

There's a risk now that Curtis is a really dull guy. Nate hopes he's not, for Beth's sake, but how interesting could a guy who's spent his entire life on a train be? What is there to do, besides stare at your own hands and dream about not being on a goddamn train? "Does he have like... hobbies?" Nate asks, cringing.