Board Thread:The Panopticon/@comment-188432-20130129081336/@comment-1166667-20130402160640

Let me put it this way:

We do not yet have proof that Oswin, Clara Oswin, and Clara are the same woman. We have possibilities and hypotheses, but no actual proof as of yet. Meanwhile, basic facts of humanity preclude her from dying in the 19th century, living in the 21st century, and dying in the far future. There are possibly workarounds to this, but they have yet to be presented or explained in-universe.

Is there a reason we cannot put, somewhere in the bio of each, that the Doctor believes them to be the same woman? It acknowledges that he thinks (at least at present) that they are the same, without committing to it being fact. Would that not satisfy his statement?