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Aristotle's Treatment of Probability and Signs

Published online by Cambridge University Press:  14 March 2022

Edward H. Madden*
Affiliation:
University of Connecticut

Extract

Probability and Frequency. Aristotle frequently used the concept of probability, but apparently he did not make any persistent effort to clarify or analyze it. His description of a fortiori argument in The Topics (115a, 6–14), e.g., depends upon “the more or less likely or probable,” but he does not explore this notion. In The Rhetoric, where he applies himself to a puzzle about probability which the Sophists had advanced (1402a, 5–30), he comes closer to an analysis of probability. Aristotle quotes Agathon,

One might perchance say this was probable—

That things improbable oft will hap to men,

and elaborates thusly: “For what is improbable does happen [often], and therefore it is probable that improbable things will happen. Granted this, one might argue that ‘what is improbable is probable.’ “(1402a, 10–15.) Aristotle believes that one can avoid this imposture by distinguishing between “general” and “specific” probability, and apparently intends by the former the statistical sense of frequent occurrence; but he does not establish what he might mean by the probability of an individual event and so leaves the notion of “specific probability” unclear.

Type
Research Article
Copyright
Copyright © 1957, The Williams & Wilkins Company

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Footnotes

1

I have dealt with these topics previously in my article “The Enthymeme: Crossroads of Logic, Rhetoric, and Metaphysics,” The Philosophical Review, Vol. LXI, 1952, pp. 368–76. I am indebted for several points in this paper to the late Professor Ralph M. Blake.

References

1. Grote, George. Aristotle. Edited by Alexander Bain and G. Croom Robertson. London: J. Murray, 1872.Google Scholar
2. The Works of Aristotle Translated into English, 11 vols. Edited by W. D. Ross. Oxford: Oxford University Press, 1908-1931.Google Scholar