Time Travel

I am starting to think that we should prepare ourselves for the presence of some form of time travel, or at least its consequences, within the plot of the film. As astronomers, we all know that simply by viewing a star in the sky at night a form of time travel-by-perspective takes place, as it takes light so long to reach our eyes. I don't think the presence of such a plot element would automatically ruin the film. It would depend upon the treatment it is given. As long as they do their research and it stays within the realm of quantum physics, I'm cool with it.