I am curious as to others' beliefs/opinions on how time travel and/vs. multiverse theory correlate. Theory/Question 1. If you could go back in time and try to alter an event, could it turn out that you can't change it and are actually only helping history along it's course? Theory/Question 2. Or could you go back in time and actually change the event, effectively creating a parallel universe, an alternate reality where events will now play out differently? Scenario: Your family is killed. You go back in time and save them. What happens then if you succeed in your endeavor and travel forward in the timeline you just altered to when you last left only to find yourself trapped in a branch of the timeline where you are out of place? You could potentially find yourself living alongside yourself since the alternate version of you would then have no motivation to travel through time, thus leaving the time traveling version of you displaced. To return to your place of origin, you would then need to find new means to travel through alternate time dimensions. If traveling through your own timeline is like traveling in a straight line, then you would have to find a way to travel across parallel lines to return to the point where there isn't another you. Would this then not defeat the whole purpose of having traveled through time in the first place? I myself like to fall back on Occam's Razor for this one.