Any text in spoken English is organized into what may be called 'information units'. (...) this is not determined (...) by constituent structure. Rat… - Michael Halliday

… language has evolved in the service of particular human needs … what is really significant is that this functional principle is carried over and built into the grammar, so that the internal organization of the grammar system is also functional in character.

I see it as part of the development of the field. I would always emphasize how much I share with other linguists: I've never either felt particularly distinct or wanted to be distinct. I never saw myself as a theorist; I only became interested in theory, in the first place, because, in the theoretical approaches that I had access to, I didn't find certain areas developed enough to enable me to explore the questions that I was interested in.

Saussure took the sign as the organizing concept for linguistic structure, using it to express the conventional nature of language in the phrase "l'arbitraire du signe". This has the effect of highlighting what is, in fact, the one point of arbitrariness in the system, namely the phonological shape of words, and hence allows the non-arbitrariness of the rest to emerge with greater clarity. An example of something that is distinctly non-arbitrary is the way different kinds of meaning in language are expressed by different kinds of grammatical structure, as appears when linguistic structure is interpreted in functional terms.