Law of contradiction:
Also called the law (or principle) of non-contradiction. One of the traditional three laws of thought (the other two being the laws of identity and of excluded middle).
Variously formulated as saying that no proposition can be both true and not true; or that nothing can be – without qualification – the case and not the case at the same time; or that nothing can -without qualification – both have and lack a given property at the same time.
The law cannot be logically proved without begging the question, though arguments of a different kind (among those called transcendental arguments) have been offered in its defence since Aristotle (384-322 BC) in his Metaphysics (book 4, chapter 4).
However, recently a notion of dialetheism has been defended which allows breaches of the law in certain cases.
Also see: paraconsistency
Source:
G Priest, ‘Contradiction, Belief and Rationality’, Proceedings of the Aristotelian Society (1985-86)
Table of Contents
- 1 Videos
- 2 Related Products
- 2.1 The Line Through the Heart: Natural Law as Fact, Theory, and Sign of Contradiction
- 2.2 R E G I C I D E (Laws of Contradiction)
- 2.3 The Law of Non-Contradiction
- 2.4 The Book of Non-Contradiction: Harmonizing the Scriptures
- 2.5 Making Law: The State, the Law, and Structural Contradictions (A Midland Book)
- 2.6 Gattaca
- 2.7 The Time Machine
- 2.8 Trouble I've Seen: Changing the Way the Church Views Racism
- 2.9 Police in Contradiction: The Evolution of the Police Function in Society (Contributions in Criminology and Penology)
- 2.10 Internal Affairs
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