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| Home > Publications database > From Boole to Leggett-Garg: Epistemology of Bell-Type Inequalities |
| Home > Publications database > From Boole to Leggett-Garg: Epistemology of Bell-Type Inequalities |
| Journal Article | FZJ-2016-04501 |
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2016
Hindawi Publ. Corp.
New York, NY [u.a.]
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Please use a persistent id in citations: http://hdl.handle.net/2128/12241 doi:10.1155/2016/4623040
Abstract: In 1862, George Boole derived an inequality for variables that represents a demarcation line between possible and impossible experience. This inequality forms an important milestone in the epistemology of probability theory and probability measures. In 1985 Leggett and Garg derived a physics related inequality, mathematically identical to Boole’s, that according to them represents a demarcation between macroscopic realism and quantum mechanics. We show that a wide gulf separates the “sense impressions” and corresponding data, as well as the postulates of macroscopic realism, from the mathematical abstractions that are used to derive the inequality of Leggett and Garg. If the gulf can be bridged, one may indeed derive the said inequality, which is then clearly a demarcation between possible and impossible experience: it cannot be violated and is not violated by quantum theory. This implies that the Leggett-Garg inequality does not mean that the SQUID flux is not there when nobody looks, as Leggett and Garg suggest, but instead that the probability measures may not be what Leggett and Garg have assumed them to be, when no data can be secured that directly relate to them. We show that similar considerations apply to other quantum interpretation-puzzles such as two-slit experiments.
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