I'll need to mull this over a lot more. Plus, again, I wish you'd watched Angel. (Buffy is about growing up, but Angel is about family. And there's the most gorgeous fic that's pure metaphor, all about forests and string and a Pool of Truth that so relevant...)

The universe ENDED because the Doctor had sex in the future.
("And, in all fairness, the universe *did* blow up...") Whatever the case, then I love time-wime-y storytelling.

OK, I need to make my head FUNCTION before I comment any further. See you later.