something an awful lot like this happens with interdimensional travel in Pratchett and Baxter’s ‘The Long Earth’. The basic plot driver is humans discovering a way to travel to the different timelines predicted by the many worlds interpretation of quantum mechanics, and every once in a while as you’re bopping across dimensions from Earth to Earth you end up in a dimension or even a series of dimensions where, due to some sort of historical happenstance, Earthn’t.
something an awful lot like this happens with interdimensional travel in Pratchett and Baxter’s ‘The Long Earth’. The basic plot driver is humans discovering a way to travel to the different timelines predicted by the many worlds interpretation of quantum mechanics, and every once in a while as you’re bopping across dimensions from Earth to Earth you end up in a dimension or even a series of dimensions where, due to some sort of historical happenstance, Earthn’t.