Truth as Metafunctional Consistency
One aspect of what is conventionally called “truth”[1] is consistency in meaning-making. And since meaning-making operates along metafunctional dimensions, this entails metafunctional consistency: consistency across the experiential and logical (together forming the ideational), the interpersonal, and the textual.
To be ideationally consistent is to maintain coherence in the representation of experience and in the logical relations asserted between those representations.[2] This involves both internal consistency (e.g. maintaining consistent categorisations) and external consistency (e.g. aligning relations among representations with broader modelling frameworks).
To be interpersonally consistent is to adopt stances towards meanings — including attitudes, judgements, and value orientations — that are not erratic or self-contradictory across time and context. Here, consistency is not neutrality: it is the maintenance of a patterned evaluative orientation.
To be textually consistent is to attend selectively to ideational and interpersonal meanings in a way that is coherent and patterned: that is, to foreground and background meanings in ways that make sense within a perspective or model. This means attending to what is relevant, in a way that is itself relevant.
Modelling, then, is shaped not just by what is represented, but by how values are assigned and what is attended to. Diversity in modelling emerges not simply from different representations of experience, but from tensions between:
– experiential construals
– interpersonal valuations
– textual patterns of attention
These tensions — and the attempt to resolve or live within them — are what give modelling its creative range.
Footnotes
[1] The noun truth is derived from the adjective true, abstracting it into an object-like entity — a metaphoric construal. Congruently, true functions to describe a relation among things, rather than as a “thing” in itself.
[2] From the interpersonal and textual perspectives, ideational meanings are not primary but functional: they are the means by which what is valued and what is attended to are elaborated.
[3] The term real is often used to mean ideationally true, but it is also commonly extended to imply that the specific categorisations involved correspond to properties of the perceivable, independent of the modelling framework — an extrapolation that conflates modelling with ontology.