And its silly for a person who uses an avatar of Dr WHO to have such a flawed knowledge of how all versions of time travel works.
There is Predestination Paradox, like in Time's Arrow... Where you were supposed to go back and do what you did.
There is Causality interference which happened in City on the edge of forever and indeed needed intervention to keep history going on the "correct" path in the universe. (See the show Voyagers, Quantum Leap, Time Tunnel)
Then there is Alternate Timelines or Parrallel Universe theory. None of these being used excludes the other from being used in any universe and I think that's where the problem people have wrapping their heads around all this. Each can happen in any universe as long as the temporal conditions are met.
*Sigh*...tsk tsk tsk Qonos...If you were smart enough to have read what Orci had said then you'd know what everyone has been really discussing all this time. Orci says that the QM Theory is replacing all time travel Theories that came before because it's the most scientifically accurate. He said that in each time travel instance a new and alternate timeline is created. That is the debate here if you'd like to keep up with the rest of us.
From what I read and I can read and comprehend he said Old trek isn't going away and that this is an alternate reality he never said any of the other stories were invalidated. Atleast that's the gist I got, of course I'm not one of these fans who second guesses everything because they've been out Raping Childhoods. We're following a different version of Kirk, and Spock because we've switched tracks. So please don't talk down to me. I've got a pretty good grasp on Time Travel and PUT as Time Travel stories are some things I really get into. And what most of the people in this debate are doing are taking what he said and letting it fit there argument. He never said it was replacing all other time travel theories. He said that this is the one they've chosen to use for this movie... Maybe you need to keep up with me, Sweetcheeks.
And if you had read the point of my post instead of being sarcastic and insulting, you would have realised that the point I am making is that this QM theory is silly in that it is obviously an attempt to explain away continuity irregularities in the story that the current production team couldn't be bothered to fix.
Orci's comments are a straw man to get the fan base talking about something else other than the fact that this movie ignores previously established Trek history for the sake of a quick buck.
And don't go around insulting people just for the sake of doing so, please.