"Lacan goes wrong by relying (quite uncritically!) on Saussure's signifier-signified conception of language. It is understandable that Lacan, when he began to write in the 1930s, should learn Saussure's turn-of-the-century linguistics. But even at the end of his life he and now his followers write about signifiers and signifieds as though the Chomskyan revolution in linguistics had never happened. Contemporary literary theorists tirelessly quote Saussure. But why? Today's linguists no more use Saussure's model than today's physicists use the concept of phlogiston. ...My point is not that Chomsky is right but that Saussure and Lacan are wrong."
January 1, 1970
https://en.wikiquote.org/wiki/Phlogiston_theory