How Steven Moffat Killed Doctor Who

The Doctor's been Dead Since The Big Bang.

Which seems like such a totally mad thing to say, doesn't it? That the Doctor is dead. Has been dead in fact since the dénouement of The Big Bang back in 2010. Just seems totally mad. 

Don't worry, it's supposed to. About the last thing you were supposed to have left The Big Bang with was any idea of what actually took place back then, story wise. That would have made the intervening time just a little bit redundant.
 
But it's not as if you weren't either told or shown what actually took place. You were simply left to fill in the blanks yourself. 

And that's exactly what you did.

Let me show you what really happened.

"I remember you Raggedy Man and you are late for my wedding!"

Memory is just what it is. The impression one person leaves upon another. It's not the actual person, it's simply you're memory of them. 

Memory can be altered.

And that is what The Silence do.