CONCEPT
Signs (Peirce's Semeiotic)
Peirce's general theory of signs — the triadic relation among sign, object, and interpretant — that Peirce considered the comprehensive framework for analyzing all thought and communication.
Peirce's semeiotic is not a branch of his philosophy but its circulatory system. Every other element of his architecture depends on it. Inference is a sign-process. Thought is a sign-process. The community of inquiry communicates through signs, fixes beliefs through signs, corrects errors through signs. The fundamental unit of the theory is the triadic sign-relation: the irreducible relationship among a sign (the vehicle of representation), an object (what the sign represents), and an interpretant (the cognitive effect produced by the encounter). The triad is irreducible — it cannot be decomposed into pairs without losing the essential character of signification. A sign without an interpretant is not a sign; an interpretant without a sign has no representational content. Meaning exists only in the full triadic relation.
In The You On AI Field Guide
The triadic structure distinguishes Peirce's semiotic from the dyadic semiology of Saussure that dominated twentieth-century continental theory. Saussure analyzed signs as pairs: signifier and signified. Peirce insisted on the third term — the interpretant