“Third, this allowed us to propose what we called the cosmological interpretation of quantum mechanics. Here we interpret the wavefunction for an object as describing not some funky imaginary ensemble of possibilities for what the object might be doing, but rather the actual spatial collection of identical copies of the object that exist in our infinite space. Moreover, quantum uncertainty that you experience simply reflects your inability to self-locate in the Level I multiverse, i. e., to know which of your infinitely many copies throughout space is the one having your subjective perceptions.”

Our Mathematical Universe: My Quest for the Ultimate Nature of Reality (2014)

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Max Tegmark 24
Swedish-American cosmologist 1967

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