Board Thread:The Panopticon/@comment-7302713-20130404114052/@comment-7302713-20130404125341

Also, River seems to think that after a certain point, she and the Doctor are moving opposite each other in time. Which seems to be mostly correct, though that part still makes no sense to me. Why on earth would they happen to meet in precisely the opposite order? But she seems to think that it's true and we've seen her afraid of this. We've seen her slowly saying goodbye to the Doctor, to the pieces of him that are slowly disappearing, over several episodes. That's not as concrete as measuring time by faces, but it's important.