Wave length collapse in corrispondence to time travel (back in time)

I have always leaned towards the view of "wave function collapse" (reduction of the wave packet) opposed to the alternate dimensions ("multi-verse" or "many worlds") view. And I've always been under the common view that going "back" in time was impossible; although going into the future is theoretically possible, considering the necessary requirements (being able to go fast enough, having enough space, etc. etc.) But I never connected the ideas of multiple dimensions and the theoretical effects of going "back" in time until I saw the movie 'Donnie Darko' today on tv. The movie blew my mind, and you'll have to see it to understand the base line. Essentially, it made me realize that going back in time would inherently and immediately create alternate dimensions (multi-verses) because anything you did differently when you went back in time would create a different dimension and a chain of events that would follow in its respective dimension. After the movie sparked my thinking about these thoughts, it kind of sealed the deal for me and confirmed my view of "wave function collapse" (that we are not currently living in other dimensions or multi verses at the same time, but radther, the wave functions "collapse" when we make a decision. The other possible realities or possible repercussions no longer exist. I just thought I'd share my thoughts on this, and I'd be more than happy to hear other views/comments! Archived source: https://web.archive.org/web/20101204201004/http://www.spacetimeandtheuniverse.com/against-mainstream/4617-wave-length-collapse-corrispondence-time-travel-back-time.html