On Martin's Use Of System Networks

Bateman (1998: 22):

An example of one of the more superficial presentational problems is the ready use made of system networks for a number of different purposes as well as for linguistic descriptions at all of the strata treated in the book — i.e., lexicogrammar, discourse semantic, register, and genre. It is as a consequence not always immediately clear at what level of description a particular system network is being presented—thus Figure 2.2 is for MOOD (i.e., from the lexicogrammar) while the figure following, Figure 2.3, is speech function (i.e., from the discourse semantics); similarly, Figure 5.10 is a discourse semantic network, whereas Figures 5.11 and 5.12 are drawn from the field component of register and Figures 5.3–5.9 from the lexicogrammar. Sometimes, it is not even clear if a network is part of the intended linguistic description at all; some networks are simply presenting overviews of the material introduced in the book: e.g., Figure 1.16’s overview of types of linguistic structure, or Figure 3.10’s summary of types of phoricity (although these latter can then always, of course, be considered as field-specific taxonomies defining the technical terms involved as set out in the chapter on IDEATION: they are not earmarked as such in the text however).

Blogger Comments:

[1] Bateman's confusion in this regard stems from the fact that Martin uses the system network schema both for genuine system networks and for simple classifying taxonomies (e.g. Figures 1.16, 3.10, 5.11, 5.12).  

[2] To be clear, Halliday's speech function is a genuine semantic system — one that can be realised congruently or metaphorically in a grammatical system of the same metafunction (mood) — rather than Martin's rebranding of textual grammatical systems (cohesion) as discourse semantic systems of various metafunctions.

[3] To be clear, Martin's Figure 5.10 presents relations between lexical items (lexicogrammar) as a discourse semantic system.

[4] To be clear, the fact that these latter taxonomies are not identified in the text by Martin as taxonomies specific to the field of discourse semantics demonstrates that Martin did not realise that they could be interpreted as such in terms of his own model.