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Induction

Inductive reasoning consists in establishing a relation between one extreme term and the middle term by means of the other extreme; for example, if B is the middle term of A and C, in proving by means of C that A applies to B; for this is how we effect inductions. (Aristotle, Prior Analytics, 2.23)

Abduction

The locus classicus for the study of abductive reasoning is found in Aristotle's Prior Analytics,

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