'A' and 'B' realms, this has to do with Clairvoyance, most people believe that clairvoyance allows you to see into an afterlife, but that is not quite it. Clairvoyance allows you to see into the 'b' realm. which is really just a coexisting realm that is inversely related to our 'a' realm. while people cannot interact with 'b' realm matter, that is why people don't just trip randmly, because if we could interact with it but not be able to see it, that would be chaos. Many people say demons come from the 'b' realm who just find a way to come to the 'a' realm. Clairvoyant people are good at studying demons, because they can observe, without being seen. I guess we can call 'a' realm the Earth and 'b' realm...Demonica (i cant think of anything, but i like it).