David Banks On 'Does'

After William Armour wrote to sys-func on 29 January at 13:19:

1) Is the function of the 'does' in

While this notion does make sense on the surface,

one of emphasis, or something else?

2) How does it compare to

While this notion makes sense on the surface,

? No emphasis?

David Banks replied on 11 February at 19:46:

I'm not sure that "emphasis" is the "mot juste". I think context is important: (1) seems to imply a context where the opposite (".. does not make sense ..") has at least been envisaged by the proponents in the discourse. (2) seems to be neutral in this respect.

Blogger Comments:

[1] To be clear, the difference between the wording of (1) and (2) is that the former distinguishes the Finite from the Predicator, whereas the latter conflates them:

While	this notion	does	make	sense	on the surface
	Subject	Finite	Predicator	Complement	comment Adjunct
	Mood		Residue

While	this notion	makes		sense	on the surface
	Subject	Finite	Predicator	Complement	comment Adjunct
	Mood		Residue

The separation in (1) makes it possible to single out the Finite does as the focus of New information ("emphasis"):

While	this notion	does	make	sense	on the surface
	Subject	Finite	Predicator	Complement	comment Adjunct
Given		New: contrastive	Given		New: contrastive

[2] To be clear, in (1), the "opposite context" is realised in language, on the one hand, by highlighting both the positive polarity of the Finite does and the qualified validity of the comment Adjunct on the surface as contrastive New information.

On the other hand, the "opposite context" is also realised in language by the choice of KEY.  The unmarked TONE feature for such a dependent clause is tone 4 (fall-rise), which, in the case of declarative MOOD, can realise 'reservation'.  In (1), 'reservation' is instantiated twice, with positive polarity and qualified validity the focus of each.

[3] To be clear, it is not that (2) is "neutral in this respect", but that 'reservation' is only instantiated once, with the qualified validity of the comment Adjunct as the only contrastive focus.

While	this notion	makes		sense	on the surface
	Subject	Finite	Predicator	Complement	comment Adjunct
Given					New: contrastive