A Priori
A priori ('from the earlier') and a posteriori ('from the later') are Latin phrases used in philosophy and linguistics to distinguish types of knowledge, justification, or argument by their reliance on experience. A priori knowledge is independent of any experience. Examples include mathematics, tautologies and deduction from pure reason. A posteriori knowledge depends on empirical evidence. Examples include most fields of science and aspects of personal knowledge.
The terms originate from the analytic methods found in Organon, a collection of works by Aristotle. Prior analytics (a priori) is about deductive logic, which comes from definitions and first principles. Posterior analytics (a posteriori) is about inductive logic, which comes from observational evidence.
Both terms appear in Euclid's Elements and were popularized by Immanuel Kant's Critique of Pure Reason, an influential work in the history of philosophy. Both terms are primarily used as modifiers to the noun "knowledge" (e.g., "a priori knowledge"). A priori can be used to modify other nouns such as "truth". Philosophers may use apriority, apriorist and aprioricity as nouns referring to the quality of being a priori.
Damn The Past
- 1988-01-01T00:00:00.000000Z
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