Continuity mistake: When the "ghost" is first seen, it is mostly obscured by a curtain; only its right shoulder is visible. In the next shot, however, it is right in the middle of the window, and nearly the entire cutout is exposed.
Rebecca: Jack has a baby?
Peter Mitchell: I realise such a concept tends to negate our belief in a benevolent God, but yes.
Peter Mitchell: I'm an architect for Christ sake, I build 50 story skyscrapers, I assemble cities of the future, I can certainly put together a goddamn diaper.