I think we can use it to go back to a place. It is the same as going further just that now we “just” need to shrink the space. Of course all is so far just an

I think we can use it to go back to a place. It is the same as going further just that now we “just” need to shrink the space. Of course all is so far just an exercise of our imagination. You can take a look at the curvature or more concrete to the density of the Universe. It is possible to be positive and in this case at one point in the future the Universe will collapse back on itself. Nothing will stop it to do this apparently FTL.