Can someone explain the different views of time? If someone were to time travel and make the mistake of doing a google search like that, then after they are caught, couldn't they go back and tell themselves not to do the search?
Philosophically, but something vaguely based on physics, there's the Many Worlds Interpretation of quantum mechanics. But as far as I know the "physical meaning" has no bearing on science. There's a good sci-fi novel about a universe where the MWI is true -- Anathem by Neal Stephenson.