The philosophy of, and faith in, multiple worlds and alternate universes
Image from Steve Bowers
"It could make sense to suppose that our own Universe is the only one that can exist or does exist, because it is the only one we live in and directly experience. Once, however, evidence arises that there is a second Universe as well, the one we call the para-Universe, then it becomes absolutely ridiculous to suppose that there are two and only two Universes. If a second Universe can exist, then an infinite number can. Between one and the infinite in cases such as these, there are no sensible numbers. Not only two, but any finite number, is ridiculous and can't exist."
"Everything not forbidden is compulsory."Theories and beliefs about the possibility of a Multiverse are very diverse and very ancient. The fundamental idea of a multiverse is that there are additional worlds outside the Known Universe, which may or may not have any causal or physical connection with the universe that we are familiar with. Many ancient religions describe 'other realms' or domains that might be accessible through ritual or belief; ancient Norse mythology described a system of nine worlds, while many Buddhist and Hindu traditions describe a multitude of worlds and states of being. The Abrahamic religions have a diverse range of beliefs concerning other realms, often involving a heavenly afterlife and other, less desirable locations or spiritual states.
Image from Keith Wigdor and Midjourney AI