DOCTOR: Time travel is like visiting Paris. You can't just read the guidebook. You've got to throw yourself in! Eat the food, use the wrong verbs, get charged double and end up kissing complete strangers! Or is that just me?

ROSE: So all the people on Earth are like, slaves.

EDITOR: Well, now, there’s an interesting point. Is a slave a slave if he doesn’t know he’s enslaved?

DOCTOR: Yes.

EDITOR: Oh. I was hoping for a philosophical debate. Is that all I’m going to get? Yes?

DOCTOR: Yes.

EDITOR: You’re no fun.