brevdravis
Really Really Experienced
Wow, that's some really high level thinking. I balk after third dimension.
Well, think of it like this...
Look at the story map as a two dimensional example of three dimensional space. Assuming that each linear path is one dimensional, or a single path in time, and that branch points are points at which the timeline splits.
Both events happen, independent of each other and completely unaffected by each other. Effectively creating a two dimensional object in story space/time, that exists separately from the other path, but does not cease to exist because of the ignorance of other paths of its existence.
A three dimensional traveler would be able to jump from one linear path to another, with the story map effectively functioning as a time machine. Yes, they can go back and change the past, but doing so destroys what already happened, and potentially could lead to the destruction of the knowledge of three dimensional travel, creating a paradox and shattering disbelief. (An arbitrary value I assign to the audience. )
Far better to create a bifurcation/choice and at that point direct the timeline down an alternate path. It takes nothing away from the other paths, but a three dimensional traveler would be able to explore and enjoy those other paths, without changing the fundamental reality of the two dimensional space time objects that had already existed.
If you get that... extrapolate time as the fourth dimension, but also other possibilities.
And if you don't get that... You need some of what I'm smoking man... it's GOOD shit.