Much has been made about the alternate reality/time line as presented in Star trek 2009. I wish to submit that the events depicted both before and after Nero's journey into the past were never part of the original Star Trek universe as depicted in the original series and movies. The biggest support for this is Spock prime himself.The Spock we know from the original series would never have just accepted the Nero created alternate time line as an alternate universe.In the classic episode City on the Edge of Forever Spock was adamant about stopping McCoy so that millions would not die who did not die before. But isn't this exactly what happened in Star Trek 2009? History was altered and with the destruction of Vulcan millions died who did not die before. The Spock we know from the original series would have done anything and everything to restore history and the time line to its proper form. Bot this Spock does nothing of the sort. Who is this Spock? I submit that he came from and exists in a reality where the laws of temporal physics function differently than those presented in the original series. In Spock Prime's reality it is apparent that when history is altered by time travel into the past an alternate reality is created leaving the original reality unchanged. From Spock Prime's point of view their is no reason to undo Nero's act because the original reality was not destroyed and still exists and is totally unaffected. This is not the Spock from the original series. Original series Spock's reality was and is that if change the past you alter your own time line not create an alternate universe. The characters depicted in Star trek 2009 are not and never were the characters we know from the original series. The reality depicted in Star Trek 2009 was already an alternate reality from the one we know before Nero traveled into the past. All Nero did was create yet another alternate reality from that reality as a result of the alternate way that temporal physics function in that universe. The original series universe is as it always was and was never depicted in Star Trek 2009.