I don't know if anyone has thought about this before, but I went and wrote a couple of paragraphs about this temporal paradox caused be the new timeline. I posted it as a note on FaceBook, and will copy/paste the note here. Thought you guys might have some interesting things to say.
As you should know, the we first meet the Borg in the TNG episode "Q Who?", when Q flings the Enterprise across the galaxy, where a Borg cube will soon show up. What might be slightly less known, however, is that the Federation first meets the Borg hundreds of years before that, in the Enterprise episode "Regeneration". In this episode, an Arctic research team on Earth discovers remnants of a Borg vessel, including drones. We learn that they are the survivors of the Borg attack on Earth, in First Contact. This is where it gets confusing. Before the crew of the Enterprise (as in, the first Enterprise in the Star Trek timeline, the one from the SHOW Enterprise) destroys these Borg, they send out a signal, which will be picked up be the Borg cube from Q Who, which sets a course towards Earth, and is intercepted by the Enterprise D in Q Who. So it's a big circle. The Enterprise D meets the Borg, eventually the Borg go on to try to go back in time to assimilate Earth and stop the first warp flight from occurring, they are defeated, their remnants then go on in one or two hundred years to send the signal that the cube picks up, which, on it's way to Earth meets the Enterprise D. But it gets worse.
So, Nero went back in time, and changed everything. All we thought was true has, now, never happened, except, maybe for the events from Enterprise, since it came before that. And here is the problem. As was described above, the original Enterprise meets Borg from the future, which were defeated by the Enterprise E in First Contact. But since, now, the Enterprise E may never exist, could the events from Regeneration even happen, despite the fact that it came before Nero came and screwed up the timeline? Will the Federation even meet the Borg before an Earth invasion, or will they have no time to prepare, without that first meeting?
Thanks for reading, if you actually got all the way through. I hope I was clear on these points, and the paradox in question. Please leave your comments below.
Thanks!
I'm eager to hear what the Sins community has to say.