Hades. Valhalla. Olympus. Hell. Islamic notions of paradise. The domain of the Hindu gods. The domain in which the Immaterial toilet goblins exist. The domain in which the fifty two and a half pixies that set the universe in motion dwell. The Immaterial Pink Unicorn domain, the Ethereal Yellow Squirrel domain, The Christian heaven, Mookoo's domain, Wagwah's domain, the domain in which the immaterial green turtle wades through the invisible aether with the universe on its back held in place by the incorporeal god chewed bubble-gum, Santa Claus's magic domain, The Easter Bunny's intangible chocolate domain, your deity's domain, the tooth fairy's domain, the garage dragon's domain.............etc. etc. etc.etc. ad-infinitum.
What if these are all "branes"?
What if there really is a multiverse, containing all imaginable worlds. These "domains", being imaginary, are by definition imaginable aren't they? So what if they really exist?
The fact that some claim we are imagining and creating them while others claim they imagine and create us is relevant here. It has the sort of symmetry we have learned to expect from a TOE. The question of how such alternative realities could affect us is also very revealing. All the information we have indicates such cross-universe effects would be very subtle and difficult to detect. This corresponds to our experience when we try find evidence for higher realities and divine manifestations and such.
Let's consider the possibility that thoughts, like gravity, are composed of joined loops that wander freely from brane to brane. This would explain why we so often forget or lose track of our intentions, direction or hmm, you know, could someone remind me where I was going with this?
Oh! I remember now! What if believing stuff in this world really could make it true in the next one? Then by carefully choosing what to believe about them, we could shape them into the sort of beings who would believe the sort of stuff about us that we would like to trickle back over and eventually become true in our own world.
No wait, that wasn't it at all. Oh well, it will come back to me.