idontremembermylogin wrote:Alright time to use this thread now.
I've been thinking about series 5 - great series, first one I watched live on TV, loved it when it came out and still love it today - but, I've suddenly thought properly about the finale.
To restart the Universe, the Doctor had to wipe himself from history and the only way he could get back was to implant that "Something Borrowed" rhyme in young Amelia's mind so that he could be remembered back into existance. If the Doctor didin't exist, then the events of Series 5 couldn't have happened because Amy wouldn't have gone anywhere the night before the wedding - but hang on, if Series 5 didn't happen, then none of the entire 47 year history (at that point) of the show would have happened and if the Doctor didn't exist, he didn't save the Earth all those times to even allow the wedding to take place, the Earth would be long dead thanks to an invasion in the 1960s or 70s at that point.
Once the Doctor was wished back into existance, I can accept that everything he had done before that moment could have happened again, but before that moment - did Series 5 even exist?
Isn’t it established that when someone is erased by the crack, their effect on the universe isn’t removed, they’re just forgotten by everyone. Like for example, when Rory was erased, the engagement ring remained in the TARDIS, despite the fact that as far as Amy was aware, he didn’t exist. So everything the Doctor had done up until the point he was erased still happened. he was just forgotten by everyone.