Many-worlds isn't mathematically simple if you demand world-splitting occurs locally. http://arxiv.org/abs/quant-ph/0103079 http://arxiv.org/abs/quant-ph/01030

Many-worlds isn't mathematically simple if you demand world-splitting occurs locally. http://arxiv.org/abs/quant-ph/0103079 http://arxiv.org/abs/quant-ph/0103079 Interpreting quantum mechanics is often like this: you can preserve locality or convenience, but usually not both. This is why I prefer the minimalist relational interpretation: http://en.wikipedia.org/wiki/Relational_quantum_mechanics http://en.wikipedia.org/wiki/Relational_quantum_mechanics However, I don't recommend this as a preferred interpretation because it does not motivate discoveries (the other interpretations all fail here too). So far, none of the interpretations has led to a new physical theory, and in particular none has really helped the study of quantum gravity, which if anything is the whole point of metaphysics: to aid in learning.