Conditional probabilities and probabilities given knowledge of a condition

Philosophy of Science 50 (1):82-95 (1983)
Authors
Paul Weirich
University of Missouri, Columbia
Abstract
The conditional probability of h given e is commonly claimed to be equal to the probability that h would have if e were learned. Here I contend that this general claim about conditional probabilities is false. I present a counter-example that involves probabilities of probabilities, a second that involves probabilities of possible future actions, and a third that involves probabilities of indicative conditionals. In addition, I briefly defend these counter-examples against charges that the probabilities they involve are illegitimate
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DOI 10.1086/289091
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