Is the Signifier a Signifier?

In the seminar, sishur emphasizes something that he takes to be concrete for which there is like, a break that cannot be mediated within the system. He thought i was just saying, like he's developing his own theory of the signifier and theory of language. Ve seminar wrong to that idea really, does it te or you think it's wrong in i meangree that it's wrong? But t doesn't the seminar, in a certain way, feed that idea? Maybe, yes, i could see. Well, why go on, follow your thoughts.