Misrepresenting The Ergative Model As The Transitive Model

 Martin, Matthiessen & Painter (2010: 283):

With all this activity going on, it is worthwhile exploring who is doing what to whom. An ergative analysis of transitivity reveals 14 effective clauses with an Agent impacting on a Medium. Agency is shared between the waves and the Bondi Boys, both of whom affect people. The main participants, in other words, don't act on one another; this is not a struggle between man and nature. Rather nature savages people, and then other people rescue them. In effect we have two protagonists, not a direct showdown with nature (antagonist) overcome by Bondi Boys (protagonist).

Blogger Comments:

[1] This confuses transitivity with ergativity. The 'impact' model is that of transitivity — Actor on Goal — not ergativity. Halliday & Matthiessen (2014: 334):

… the transitive model is based on the configuration of Actor + Process. The Actor is construed as bringing about the unfolding of the Process through time; and this unfolding is either confined in its outcome to the Actor or extended to another participant, the Goal. The Goal is construed as being impacted by the Actor’s performance of the Process.

In the ergative model, on the other hand, a Process is actualised through a Medium, and there may be an additional participant functioning as an external cause: an Agent; see Halliday & Matthiessen (2014: 342). That, is an Agent does not impact on a Medium; an Agent is the external cause of a Process that is actualised through a Medium.

[2] To be clear, if nature affects/savages people, then nature (Actor) is acting on people (Goal). What is true is the vacuous observation that people don't 'act on' three enormous ocean waves and overcome them.