Having read/watched a great many time travel stories, there is an alternative to the immutable timeline which has already happened and is set in stone, and that is that certain events can be changed by the time traveller, but these have absolutely no real consequences because "Fate" would dictate that the future will adjust and never significantly differ from a set path. I don't know if this idea has a name. I've called it "Fate".
Personally, I don't believe in "Fate." I'm with Han Solo: "Kid, I've flown from one side of this galaxy to the other. I've seen a lot of strange stuff, but I've never seen anything to make me believe there's one all-powerful force controlling everything. There's no mystical energy field that controls my destiny."
Personally, I don't believe in "Fate." I'm with Han Solo: "Kid, I've flown from one side of this galaxy to the other. I've seen a lot of strange stuff, but I've never seen anything to make me believe there's one all-powerful force controlling everything. There's no mystical energy field that controls my destiny."