the.com/semiotics

The study of signs, proving a red light means stop only because everyone agreed to pretend.

means The study of how signs, symbols, and language produce meaning within systems of shared convention.

from From Greek 'sēmeiōtikos,' relating to signs, itself from 'sēmeion' meaning mark or sign — the same root that gives us 'semaphore.' The term has old roots in medicine, where physicians studied symptoms as signs of disease, but it was philosophers (notably Charles Sanders Peirce and Ferdinand de Saussure, working independently) who in the late 19th and early 20th centuries built it into a formal science of how signs mean anything at all.

founders
Saussure and Peirce invented it independently, barely agreeing on terms
core idea
meaning comes from difference, not from things themselves
everyday use
ad agencies weaponize it to make logos feel inevitable
dark joke
everything is a sign, including this definition of signs
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