10/14/2020
We are progressing under the conceptual construct that one cannot alter past events. The paradox being that any person would necessarily alter a timeline, even with the most stringent efforts to remain a passive observer. To account for this paradox, it is our operational belief that one creates an alternate timeline with each and every alteration to "your history". Because an event is locked in our own history, no changes will manifest in our own experiential timeline. When one returns to their "point of departure", they, by definition, return to their own timeline.
Think of it in terms of the classic thought experiment of "what happens if you kill your own grandfather."? You would be able to kill him, but his death would manifest only in an alternate timeline. Upon return to your own point of departure, your grandfather will have existed as he always had. In the alternative timeline he would be dead, murdered, and you would cease to exist in that timeline; you will remain on your own native timeline, shifting, seemingly instantaneously, with no memory of the events involving your grandfather nor experience any of the attendant repercussions.