"Oh, I'm from Earth," Jamie says easily enough. "It's just...aye, well, it might sound a bit daft to ye, but I'm from an earlier time than a lot of people on the ship. Most of them, actually, although I'd not say it'd work quite the same for the ones from different worlds."

Which doesn't really explain the robot part of things so much, he realizes, but it might help if she gets an idea of when he's from first. Because she might very well think he's completely mad if he doesn't. Well, she might think he's completely mad, anyway.

"I was born in seventeen hundred and twenty nine. That would be Earth years, mind ye."