The Many-Worlds Interpretation (MWI) of quantum mechanics is a theoretical framework that suggests every quantum event results in the branching of the universe into multiple, parallel worlds or realities. This interpretation was formulated by physicist Hugh Everett III in 1957. In classical quantum mechanics, when a measurement is made, the wave function—an equation describing the quantum state of a system—collapses into a single outcome.
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One single universal wavefunction, and every possible outcomes happens in some alternate universe. Does feel a bit sad and superfluous, but also does give some sense to perceived "wave function collapse".