Bob5 comments on Decoherence is Falsifiable and Testable - Less Wrong

20 Post author: Eliezer_Yudkowsky 07 May 2008 07:54AM

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Comment author: Bob5 07 May 2008 06:33:03PM 0 points [-]

Does the reality of the wavefunction imply MWI? The wavefunction is a function over every possible configuration of the universe. We may still believe that the universe comprises a single point in configuration space, corresponding to a single value of the wavefunction, along with the value of the wavefunction for every other (counterfactual) point in the configuration space. The reality is the particular configuration space point along with the shape of the wavefunction. This does not imply that the wavefunction is a delta-function in configuration space. Other counterfactual configurations may have similar probability amplitudes depending on their "degree of possibility" compared to the existing configuration.