"We are," Book confirms, lightly. He has been learning to try to keep the explanation as casual as possible, try not to make too big a deal of what is happening to them. He looks around the room, and, of course, they're in one of the few places without windows, so he can't show this man the same thing that finally drove home the entire point of their situation for him.

"We are currently on board a space station, I've been told the local year is somewhere in the 3500's," Book can never quite remember the right number. "There are about two dozen of us on board, all coming from different times and places, different worlds."

Book smiles in an attempt at reassurance. This man doesn't seem like Book's typical idea of a space traveler. "I know it might seem a little hard to believe, space and time travel, but we've found plenty of evidence to help prove it."