Misunderstanding Realisation

Ngo, Hood, Martin, Painter, Smith & Zappavigna (2022: 93):

Entities are the ideational discourse semantic units construing items in a field of experience. The primary types of entity are thing entities (a person, place, or object), activity entities (an activity or sequence of activities) and semiotic entities (verbiage or ideas).

In the Chatty Vlog, the ‘National Night Out’, ‘Hair Dye’, ‘Caring for Children (A)’, ‘Dermatology’ and ‘Parking Lot’ episodes tend to realise concrete thing entities from the fields of domestic/daily life and medicine (e.g. people, neighbours, kids, feet, syringe). 

By way of contrast, the ‘Social Media’ phase at the end of the vlog, where the vlogger reflects on her own social media posting practices and goals, tends to realise fewer thing entities and more semiotic entities relating to her social media text production (e.g. vlog, text message, clips, videos, comments). 

Activity entities are not common (one example being vacation in the Intro) in the vlog. Examples from other studies include entities that realise activity sequences such as method, pipette calibration, study and experiment (in scientific discourse; Hao, 2015, 2020b; Hao and Hood, 2019).

Blogger Comments:

[1] To be clear, in the discourse semantics of Martin (1992: 326), the only experiential unit proposed is the message part, which in the lexicogrammar 'is realised congruently as a lexical item'. The discourse semantic unit, entity, presented here, on the other hand, is that of Martin's former student, Hao, which, as will be seen, involves inconsistencies deriving from misunderstandings of the ideational semantics of Halliday & Matthiessen (1999).

[2] To be clear, this seriously misunderstands the notion of realisation in SFL Theory, since it presents a episode/phase of discourse realising a discourse semantic unit, entity. These are at the same level of symbolic abstraction, whereas realisation is the relation between different levels of symbolic abstraction.

[3] Again, this seriously misunderstands the notion of realisation in SFL Theory, though in a more convoluted way. In Martin (1992) activity sequences are misunderstood as context rather than semantics (evidence here). So here the authors use 'realise' in a way that consistent with the misunderstandings in Martin (1992), since a semantic entity is a lower level of symbolic abstraction than a contextual activity sequence. 

However, this consistency with the misunderstandings in Martin (1992) is inconsistent with Martin's later work, Martin & Rose (2007: 100ff) where 'activity sequence' is relocated to the discourse semantic stratum in the experiential system of IDEATION. That is, in terms of Martin's more recent work, there is no realisation relation between entity and activity sequence because both are positioned at the same level of symbolic abstraction.