John's about to ask where someone who's from a time of boats and telescopes for travel would get that kind of technology. He'd said he crashed, though. Not from Earth. Alien?

The fact that he's trying to work this out when he's fairly certain he's going to wake up in a moment is a little mind-boggling. But while he's in the dream, he might as well indulge. "No, no. It's fine. It sounds like they're sort of the same. Where are you from, though, if it's not here, and it's not where you crashed?"