Re: "Upside Down" sci fi romance film (May 2011) with Jim Strugess
^ I don't see how it would be possible to regularly cross over from one world to another unless they were both flat.
I mean, you take two spherical planets and place them next to each other, you may end up with a very tiny area where you can move between them, but nothing more than that.
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.