Gwen: There’s one thing I always meant to ask Jack, back in the old days. I wanted to know about that Doctor of his. The man who appears out of nowhere and saves the world except sometimes he doesn’t. All those times in history when there was no sign of him, I wanted to know why not. But I don’t need to ask anymore, I know the answer now. Sometimes, the Doctor must look at this planet, and turn away in shame. I’m recording this in case anyone ever finds it, so you can see… you can see how the world ended.