Re: [lojban] Re: New to Lojban and a question

[John E Clifford <clifford-j@sbcglobal.net>]

--- Robert LeChevalier <lojbab@lojban.org> wrote:

> 
> There is another sense of precise which may be
> captured in English with 
> the word "narrow" or "focused" or perhaps
> "exclusive". (Exclusion of 
> alternative meanings is what increased
> verbosity in Lojban provides, in 
> theory).  I am led again to think that we may
> need a gismu for the 
> "exclusive" sense of "only" that might apply
> here.  But far be it from 
> me to propose new gismu %^)
>
I have been trying for two days to figurte out
what "the 'exclusive' sense of 'only'" might be.
I think I may have it: the importing sense based
on "exclusive disjunction" as opposed to the
sense based on "inclusive disjunction" which
allows that only so and so's are such and suches
to be true when there are no such and suches. 
Right?
But the remark also raises the usual question:
Why not use -- in a logical language -- the
logical "only"?  Why, especially, have a *brival*
(let alone a gismu) for it?