Oh - Ohh, right. The lighthouse. Martin supposes she has a point, it's probably not a great time to be talking about this, but if he's not him - if he's not the right him, he'd much rather know about it now than later.

"Oh. Uh. Yeah. I mean, not - not in any great detail, but yeah. I've heard about the concept?" He's not sure that's any more comforting than believing she is someone that he knew before and simply, for one reason or another, has forgotten. That would still be horribly awkward, of course, but still a bit easier to take than the potential for being just one of an infinite number of Martins from an infinite number of universes, or something.

"That's - that's actually a real thing, huh? Are - are you sure?"