"Native slipstream thinking, which has been around for millennia, anticipated recent cutting-edge physics, ironically suggesting that Natives have had things right all along. The closest approximation in quantum mechanics is the concept of the "multiverse," which posits that reality consists of a number of simultaneously existing alternate worlds and/or parallel worlds. Interested readers will enjoy John Gribbin's In Search of the Multiverse: Parallel Worlds, Hidden Dimensions, and the Quest for the Frontiers of Reality (2010) and David Deutsch's seminal The Fabric of Reality: The Science of Parallel Universes and Its Implications (1998). Deutsch's approach describes reality as "an infinite library full of copies of books that all start out the same way on page one, but in which the story in each book deviates more and more from the versions in the other books the farther into the book you read." The further twist of Deutsch's theory is that it "allows universes to merge back together... as if two of the books in the library have the same happy ending arrived at by different routes.""
January 1, 1970
https://en.wikiquote.org/wiki/David_Deutsch