Thread:CirUmeUela/@comment-27496405-20180307074410/@comment-2112031-20180520003541

Really liked the episode. Kind of odd that the whole timeline thing got resolved without any real explanation as to why it happened that way.

As for the timeline in general, I would say that the monolith sent them to an alternate future, in which that timeline's version of Fitz traveled back with them. Since the timeline has now been changed, they can remove present Fitz from cryo-sleep without really having to worry about paradoxes, since he would otherwise arrive in a future where the Earth wasn't shattered and the white monolith had been destroyed, preventing him from returning back to his own time. It's a bit unfortunate that present Fitz won't remember anything his counterpart did, thus requiring him to be brought up to speed and possibly remarry Jemma.

The general rule within the marvel universe is that time travel, for all intents and purposes, doesn't actually work. When you travel back in time, you essentially arrive in a world that was identical to the past until you arrived. The only exceptions are predestination paradoxes, in which the time travel had "always happened" that way.