I refuse to believe it.
I don't care that it fits perfectly into the timeline. I don't care about how it makes sense. You cannot turn my handsome boy from this...
...into this:
I don't care about five billion friggin' years of evolution, this is JACK HARKNESS.
AAAAAAAAAAARRRRRGGGGHHH!!!!!
(In case you couldn't tell, I was slightly upset by the end of this year's season finale.)