The last half of Eco’s book, A Theory of Semiotics, looks at the theory of sign production, which is concerned with all the types of labor needed to produce and interpret signs, messages or texts. Also the type of labor used in the physical and psychological effort in manipulating signals; the labor of time needed, degree of social acceptance or refusal and the labor of the pressure exerted by the sender on the addressee and so on. (p152)
Eco uses a series of interconnecting arrows in a table of the labor presupposed in sign production to try and correct the oversimplification of the bi-dimensional format of the diagram. There are eleven types of labor he identifies in the sign production process.
- The physical labor needed to produce signals.
- Labor used to articulate expression-units.
- The labor of code making.
- Labor when both sender and addressee emit or interpret messages observing the rules of a given code.
- Labor performed when changing the codes of a given society.
- Labor performed by many rhetorical discourses.
- Labor performed in order to interpret a text by means of a complex inferential process.
- Labor performed by both sender and addressee to articulate and interpret sentences whose content must be correctly established.
- The labor performed in order to check whether an expression refer to the actual properties of things one is speaking of.
- The labor of inference.
- The labor the sender performs in order to focus the attention of the addressee on his attitudes and intentions and in order to elicit behaviourial responses in other people.
[SS Gosh it sounds like a lot of hard work]