Talk:Moebius, Part 2/@comment-131168-20181001231557

From the Goofs section: "It could be argued that the entire two-part episode is one big time paradox. The Stargate series usually makes a very strict distinction between time travel and travel between alternate realities." and so on and so on.

I disagree. The main thing is that there were very few previous Stargate time travel episodes, so they didn't have much chance to define solid rules, therefore meaning it's hard to be clearly inconsistent. You could look at the events of this episode and say it's a paradox--but since nobody has seen time travel in action, we pretty much have to accept whatever rules a given fiction decides to go with, and the fictional way it works in this episode doesn't contradict some long-defined Stargate standard. In fact it's almost exactly the way time travel worked on Atlantis just several weeks before in Before I Sleep.

In Back to the Future circles there's sometimes similar talk about why in BTTF II we still see Marty from the first movie in 1955 even though the 1985 he comes from doesn't currently exist. I could get into theories about it, but it boils down to: Because That's The Way They Say It Works.