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...ation (BI). DeWitt and Graham [7] originally deduced the BI using the relative frequency theory of probability [13, 14], and this derivation is open to the standard objections to the frequency theory =-=[13,15]-=-. Deutsch instead derives the BI using the Principle of Indifference of the classical/a priori theory of probability [13, 14]. According to the Principle of Indifference, the probability of an event i...

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...rrangement. This is most easily seen using Deutsch's MWI derivation of the Born Interpretation (BI). DeWitt and Graham [7] originally deduced the BI using the relative frequency theory of probability =-=[13, 14]-=-, and this derivation is open to the standard objections to the frequency theory [13,15]. Deutsch instead derives the BI using the Principle of Indifference of the classical/a priori theory of probabi...

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... honest?); (2) why is it always legitimate to split a given set of possibilities into equipossible set (the classical theory has to use the probability calculus to construct an artificial set --- see =-=[17]-=- for a discussion), and (3) how do we obtain irrational probabilities from rational ones (see [13] and [14] for a discussion of this difficulty). These difficulties disappear in quantum mechanics: fir...

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...rrangement. This is most easily seen using Deutsch's MWI derivation of the Born Interpretation (BI). DeWitt and Graham [7] originally deduced the BI using the relative frequency theory of probability =-=[13, 14]-=-, and this derivation is open to the standard objections to the frequency theory [13,15]. Deutsch instead derives the BI using the Principle of Indifference of the classical/a priori theory of probabi...

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...ing away all observations except those in which the chosen directions happened to agree within a predetermined tolerance. But this would waste most of the data. The Aspect-Clauser-Freedman Experiment =-=[11]-=- is designed to use more of the data by testing Bell's Inequality for the expectation value of the product of the spins of the two electrons with the spin of one electron being measured in directionsn...

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....TIPLER@TULANE.EDU Nonlocality is the standard example of a quantum mechanical property not present in classical mechanics. A huge number of papers are published each year (in 1997, four in PRL alone =-=[1, 2, 3]) purporti-=-ng to clarify the meaning of "nonlocality". The phenomenon of nonlocality was first discussed in the EPR Experiment [4]. We have two spin 1/2 particles, and the two-particle system is in the...

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....TIPLER@TULANE.EDU Nonlocality is the standard example of a quantum mechanical property not present in classical mechanics. A huge number of papers are published each year (in 1997, four in PRL alone =-=[1, 2, 3]) purporti-=-ng to clarify the meaning of "nonlocality". The phenomenon of nonlocality was first discussed in the EPR Experiment [4]. We have two spin 1/2 particles, and the two-particle system is in the...

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... There is no mystery. There is no quantum nonlocality. Particle two doesn't know what has happened to particle one when its spin is measured. State transitions are nice and local in quantum mechanics =-=[5]-=-. All these statements are true because quantum mechanics tells us that the wave function does not collapse when the state of a system is measured. In particular, nonlocality disappears when the Many-...

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...babilities from rational ones (see [13] and [14] for a discussion of this difficulty). These difficulties disappear in quantum mechanics: first, systems in the same quantum state really are identical =-=[18]-=-, and this identity carries over to baeses like (1) and (2) where cos ` = 1; second, the consistency of the quantum Indifference Principle for all interpretation bases requires the split into equiposs...

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...ns on the Moon --- which would imply that the Moon was not made of quintessence, but rather was made up of the same sort of stuff as the Earth --- than to his claim that the Earth went around the Sun =-=[21]-=-. Accordingly, in the Dialogue on the Great World Systems, Galileo's spokesman Salviati made refuting this two-substance idea the very first order of business [21]. Just as 17th century philosophers h...