It is argued that, although in the Many-Worlds Interpretation of quantum mechanics there is no “probability” for an outcome of a quantum experiment in the usual sense, we can understand why we have an illusion of probability. The explanation involves: (a) A “sleeping pill” gedanken experiment which makes correspondence between an illegitimate question: “What is the probability of an outcome of a quantum measurement?” with a legitimate question: “What is the probability that ‘I’ am in the world corresponding to that outcome?”; (b) A gedanken experiment which splits the world into several worlds which are identical according to some symmetry condition; and (c) Relativistic causality, which together with (b) explain the Born rule of standard quantum mechanics. The Quantum Sleeping Beauty controversy and “caring measure” replacing probability measure are discussed.
CITATION STYLE
Vaidman, L. (2012). Probability in the Many-Worlds Interpretation of Quantum Mechanics. In Frontiers Collection (Vol. Part F963, pp. 299–311). Springer VS. https://doi.org/10.1007/978-3-642-21329-8_18
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