Using A Middle Clause To Illustrate Agency

Martin (1992: 488):

The way in which modal responsibility is mapped onto agency may well be a life and death matter, as text [6:53] shows.  Superintendent Harding is explaining why an innocent Aboriginal man has been shot to death during a commando style police raid (in connection with a search for a suspect who has wounded two policemen).  In contrast to the paper's headline, the Superintendent textures the gun as responsible for the killing.

‘Uptight’ police kill man in raid
[6: 53]	(Superintendent Harding)
	a	A struggle took place
	b	and the officer was reacting
	c	to keep the peace
	d	and stop himself or others being hurt.
	e	The gun then discharged.

Blogger Comments:

[1] The clause in question is middle, not effective; there is no agency:

the gun	then	discharged
Medium Actor		Process: material

[2] In terms of "experiential responsibility", the gun was not construed as an Agent by the speaker.  In terms of modal responsibility, as Subject, the gun is the element that the speaker makes responsible for the validity of what he is saying.

the gun	then	discharged
Subject	(conjunctive Adjunct)	Finite	Predicator

Note that according to Martin's misinterpretation of modal responsibility, it is the gun that is the "participant at risk".

[3] In SFL theory, 'texture', the property of being a text, is created by the textual metafunction.  Here it is misapplied to the ideational and interpersonal metafunctions — agency and modal responsibility, respectively.