Is there any particular reason you have Spock Prime emerging into the same timeline that Nero created? (Other than the fact that this is what we see in the film, of course.) In other words, why does Nero create a new timeline but Spock does not? Well, no, not from OUR perspective. I'm talking about "in-universe". I was concerned that all this talk of "retroactive" changes to the timeline meant that, IN-universe, nothing from the Prime timeline ever happened. I assume that was not, in fact, the intent?