"Sorry. I promise I'm not trying to create conspiracy theories or anything."

He does realise, at least - if a little late - that maybe he should be making an effort to not unnerve the child. But that would require thinking about the words he's saying before they make it out of his mouth, and with this Doctor, that's probably a lost cause.

"I'm sure it's a... lovely ship, with perfectly good reasons for everything, but you know how it is. One minute you're on a space cruise on a lovely ship, and then before you know it, there's a bunch of homicidal angels and an angry cyborg ruining everyone's holiday." Pause. "I'm sure that won't happen here either. For one thing, this ship doesn't even have Host."

...that was reassuring. Yep.