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Old Evidence and New Explanation

Carl G. Wagner
Philosophy of Science
Vol. 64, No. 4 (Dec., 1997), pp. 677-691
Stable URL: http://www.jstor.org/stable/188567
Page Count: 15
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Old Evidence and New Explanation
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Abstract

Jeffrey has devised a probability revision method that increases the probability of hypothesis H when it is discovered that H implies previously known evidence E. A natural extension of Jeffrey's method likewise increases the probability of H when E has been established with sufficiently high probability and it is then discovered, quite apart from this, that H confers sufficiently higher probability on E than does its logical negation H̄.

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