Board Thread:The Panopticon/@comment-188432-20130129081336/@comment-1166667-20130402155731

It is apparent from the scene in which that quote takes place that the Doctor does not understand what is going on. We simply cannot take his word as fact as such. And if the Doctor's word is all you have to go on, then how can you possibly call it fact?

If all we have is the Doctor's befuddled hypothesis, then we cannot state that all Oswalds are the same woman. Death is not an opinion. There has been zero explanation for how she could survive death twice, and as such, we must assume that the deaths we have seen were final.