<span lang="ar" dir="rtl">The</span> idea of language as a linguistic system appears in the linguistic theory of Ferdinand de Saussure, J.R. Firth, Benjamin Lee Whorf, Louis Hjelmslev, and Michael Halliday.
The paradigmatic principle - the idea that the process of using language involves choosing from a specifiable set of options - was established in semiotics by Saussure, whose concept of value (viz. âÂÂvaleurâÂÂ), and of signs as terms in a system, âÂÂshowed up paradigmatic organization as the most abstract dimension of meaningâÂÂ
âÂÂSystemâ is used in two related ways in systemic functional linguistics (SFL). SFL uses the idea of system to refer to language as a whole, (e.g. âÂÂthe system of languageâÂÂ). This usage derives from Hjelmslev. In this context, Jay Lemke describes language as an open, dynamic system.
There is also the notion of âÂÂsystemâ as used by J.R. Firth, where linguistic systems are considered to furnish the background for elements of structure. Halliday argues that, unlike system in the sense in which it was used by Firth was a conception only found in FirthâÂÂs linguistic theory.
In this use of the term âÂÂsystemâÂÂ, grammatical, or other features of language, are considered best understood when described as sets of options. Thus, âÂÂthe most abstract categories of the grammatical description are the systems together with their options (systemic features). A systemic grammar differs from other functional grammars (and from all formal grammars) in that it is paradigmatic: a system is paradigmatic set of alternative features, of which one must be chosen if the entry condition is satisfied.
In HallidayâÂÂs early work, âÂÂsystemâ was considered to be one of four fundamental categories for the theory of grammar, the others being unit, structure and class. The category of âÂÂsystemâ was invoked to account for âÂÂthe occurrency of one rather than another from among a number of like eventsâ At that time, Halliday defined grammar as âÂÂthat level of linguistic form at which operate closed systemsâÂÂ
In adopting a system perspective on language, systemic functional linguistics can be seen as part of a more general 20th and 21st century reaction against atomistic approaches to science, in which an essence is sought after within smaller and smaller components of the phenomenon under study. In systems thinking, any delineated object of study is defined by its relations to other units postulated by the theory. In systemic functional linguistics, this has been described as the trinocular perspective. Thus a descriptive category must be defended from three perspectives: from above (âÂÂwhat does it construe?â âÂÂwhat effect does it have in a context of use?âÂÂ), below (âÂÂhow is this function realized?âÂÂ) and round about (âÂÂwhat else is in the neighbourhood?â âÂÂwhat other things does this thing have to interact with?âÂÂ). This gives systemic functional linguistics an affinity with studies of complex systems.