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From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: comp.ai
Subject: Re: Abduction: Summary
Message-ID: <1991May6.205735.23807@athena.cs.uga.edu>
Date: 6 May 91 20:57:35 GMT
References: <1991May6.173412.11283@cs.ubc.ca>
Organization: University of Georgia, Athens
Lines: 21

In article <1991May6.173412.11283@cs.ubc.ca> kean@cs.ubc.ca (Alex Kean) writes:
>
>First, thank you for all the replies. The "explanations" are very
>helpful and appreciated. The origin of the word in Greek, as pointed
>out by Pierre Marquis, is from Aristotle [see also peirce32, pp 497].
>The name
>   \'\alpha \pi \alpha \gamma \omega \gamma \'\eta ==> (apagogy)
>means what Peirce called "abduction" and
>   \epsilon \pi \alpha \gamma \omega \gamma \'\eta ==> (epagogy)
>means "deduction". The \'\alpha ( a ) is like ( un- ) in English and
>thus (apagogy) is the opposite of (epagogy). I guess Paul Scott and

No; the prefix in "apagogy" is "apo-" ("from"),
not "a(n)-" ("not").

So apo+agoge = ab+ductio = abduction (a Greek-to-Latin literal translation).
-- 
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Michael A. Covington | Artificial Intelligence Programs
The University of Georgia  |  Athens, GA 30602   U.S.A.
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