The assertion “Every bird flies” is disproved by one flightless bird, such as an ostrich. When testing an inductive universal, search not only for supporting cases but also for a possible counterexample. This is a supplementary teaching example, not a quotation from the book.
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The force of a counterexample
Induction and Analogy — Istiqra and Tamthil
The assertion “Every bird flies” is disproved by one flightless bird, such as an ostrich. When testing an inductive universal, search not only for supporting cases but also for a possible counterexample. This is a supplementary teaching example, not a quotation from the book.