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Single Idea 5862

[filed under theme 14. Science / A. Basis of Science / 6. Falsification ]

Full Idea

If we have a single counter-instance, the argument is refuted as not necessary, even if more cases are otherwise or more often otherwise.

Gist of Idea

A single counterexample is enough to prove that a truth is not necessary

Source

Aristotle (The Art of Rhetoric [c.350 BCE], 1403a07)

Book Ref

Aristotle: 'The Art of Rhetoric', ed/tr. Lawson-Tancred,H.C. [Penguin 1991], p.213

A Reaction

This is Aristotle (pioneering hero) pointing out what we now tend to think of as Karl Popper's falsification, the certain way to demonstrate the falseness of a supposed law of nature, by finding one anomaly from it.

The 17 ideas from 'The Art of Rhetoric'

5847 It is the role of dialectic to survey syllogisms [Aristotle]
5848 All good things can be misused, except virtue [Aristotle]
5849 Rhetoric is a political offshoot of dialectic and ethics [Aristotle]
5850 Happiness is composed of a catalogue of internal and external benefits [Aristotle]
5851 Pentathletes look the most beautiful, because they combine speed and strength [Aristotle]
5852 The four constitutions are democracy (freedom), oligarchy (wealth), aristocracy (custom), tyranny (security) [Aristotle]
5853 The best virtues are the most useful to others [Aristotle]
1660 It is noble to avenge oneself on one's enemies, and not come to terms with them [Aristotle]
23250 Desired responsible actions result either from rational or from irrational desire [Aristotle]
5854 Nobody fears a disease which nobody has yet caught [Aristotle]
5855 We all feel universal right and wrong, independent of any community or contracts [Aristotle]
5856 Self-interest is a relative good, but nobility an absolute good [Aristotle]
5857 The young feel pity from philanthropy, but the old from self-concern [Aristotle]
5858 Men are physically prime at thirty-five, and mentally prime at forty-nine [Aristotle]
5859 Rich people are mindlessly happy [Aristotle]
5861 People assume events cause what follows them [Aristotle]
5862 A single counterexample is enough to prove that a truth is not necessary [Aristotle]