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A priori ('from the earlier') and a posteriori ('from the later') are Latin phrases used in philosophy to distinguish types of knowledge, justification, or argument by their reliance on experience. A priori knowledge is independent from any experience. Examples include mathematics, [i] tautologies and deduction from pure reason.
Infallibilism – Knowledge is incompatible with the possibility of being wrong. Fallibilism – Claims can be accepted even though they cannot be conclusively proven or justified. Non-justificationism – Knowledge is produced by attacking claims and refuting them instead of justifying them.
Essentially, the same knowledge thought to be a priori by Leibniz is, according to Locke, the result of empirical knowledge, which has a lost origin [been forgotten] in respect to the inquirer. However, the inquirer is not cognizant of this fact; thus, he experiences what he believes to be a priori knowledge.
A priori and a posteriori knowledge – these terms are used with respect to reasoning (epistemology) to distinguish necessary conclusions from first premises.. A priori knowledge or justification – knowledge that is independent of experience, as with mathematics, tautologies ("All bachelors are unmarried"), and deduction from pure reason (e.g., ontological proofs).
(a) P is a priori iff P is necessary. (b) P is a posteriori iff P is contingent. Hilary Putnam comments on the significance of Kripke's counter-examples: "Since Kant there has been a big split between philosophers who thought that all necessary truths were analytic and philosophers who thought that some necessary truths were synthetic a priori.
A posteriori knowledge arises from, or is caused by, experience. A priori knowledge may come temporally after experience, but its certainty is not derivable from the experience itself. Saul Kripke was the first major thinker to propose that there are analytic a posteriori knowledge claims.
A priori knowledge, on the other hand, is seen either as innate or as justified by rational intuition and therefore as not dependent on empirical evidence. Rationalism fully accepts that there is knowledge a priori , which is either outright rejected by empiricism or accepted only in a restricted way as knowledge of relations between our ...
Genetic epistemology or 'developmental theory of knowledge' is a study of the origins (genesis) of knowledge (epistemology) established by Swiss psychologist Jean Piaget. This theory opposes traditional epistemology and unites constructivism and structuralism. Piaget took epistemology as the starting point and adopted the method of genetics ...