Bueno, aquí va el esperado tercer capítulo. En él doy cuenta de forma sucinta de la primera de las ramas de la semiótica: la Gramática especulativa. La Gramática es la rama de la lógica que estudia las condiciones formales de los signos. El propio Peirce lo explica del siguiente modo:

"All thought being performed by means of signs, logic may be regarded as the science of the general laws of signs. It has three branches: (1) Speculative Grammar, or the general theory of the nature and meanings of signs, whether they be icons, indices, or symbols; (2) Critic, which classifies arguments and determines the validity and degree of force of each kind; (3) Methodeutic, which studies the methods that ought to be pursued in the investigation, in the exposition, and in the application of truth. Each division depends on that which precedes it." ('A Syllabus of Certain Topics of Logic', EP 2:260, 1903)

Increíble, ¿no?

Art. 3: Gramática especulativa (I).pdf