Published online by Cambridge University Press: 01 April 2022
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.
Research supported by the National Science Foundation (SBR-9528893).
To Keith Lehrer on the Occasion of his Sixtieth Birthday