From: And Rosta <and.rosta@gmail.com>
To: lojban@googlegroups.com
Sent: Friday, August 31, 2012 2:39 PM
Subject: Re: [lojban] Revising mu'ei and CAhA once again. Possible worlds.
la gleki, On 31/08/2012 17:48:
> On Tuesday, August 14, 2012 10:34:20 PM UTC+4, And Rosta wrote:
>
> Gleki Arxokuna, On 14/08/2012 18:23:
> > I wish Robin started using {mu'ei} again but
> > it's really when usage decides. May be human brain just doesn't want
> > to deal with A-level at such level of precision. May be {ka'e/na
> > ka'e/ka'ei/bia'i} or even {bi'ai} is enough.
>
> The evidence of natural language is to the contrary. The could/probably/would contrast is the some/most/all contrast.
>
> > The use of {da'i} is interesting. For a logical language it's
> > completely deplorable, because there's a complete mismatch between
> > the lexicosyntactic form and the logical form, and no
explicit rule
> > about how to get from one to the other -- it works by mere stipulated
> > magic. But it caught on among those impatient to be actively using
> > the language, and nicely illustrated the fundamental incompatibility
> > between a loglang and a language governed by the principle of "let
> > usage decide".
> >
> > May be we can determine the most common usage of {da'i} and redefine
> > it from the point of view of A/M/F-level scheme? May be we should
> > perform analysis of Lojban corpus and tatoeba sentences?
>
> {da'i} is in UI, isn't it? So it doesn't have the right grammatical properties.
>
> It is in UI. If I "discovered" A and F levels why
not bind {da'i} to A-level i.e. make it a synonym of {ka'e} but without changing the grammar and selmaho
> and {da'inai} would be "equal" to {ca'a}.
Because {da'i} should be a marker of mood -- of hypothetical, unassertive mood; whereas, ka'e is a modal of possibility. Modals involve quantification over possible states of affairs of various sorts. Moods involve a relation between the speaker and the proposition -- the speaker asserts p to be true, the speaker wishes p were true, the speaker entertains the idea of p, the speaker asks whether p is true, and so forth.
(There's no harm in marking the protasis and/or apodosis of a conditional with da'i, but da'i doesn't generate conditional semantics.)
--And.
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