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Re: [engelang] Xorban: Semantics of "l-" (and "s-" and "r-")



Oh, don't leave it, keep pushing.  This is as near to coherent story about myopic singulars and the like as I can remember.  I said that & and was getting political, but it seems to be really metaphysical.  Logic tends to be very SAE and Aristotelian, characterless thing and properties.  It seems that when & talks about purely formal grammar he means that we want to separate the grammar from any considerations of the underlying worldview ( all very anti-Whorfian). So, appealing to objects or even L-sets does carry any weight, since he wants a grammar will work as well, if the underlying worlds are composed of properties and realizations -- in a indefinite descending chain to infima species or if they consist of archetypes who perform all the acts that we attribute to individuals or ... and we could go on through a philosophy one textbook, or at least Cliff Notes on the possibilities, from atoms and the Void (or vibrating strings) to Shiva (or HaShem) a doer and viewer of all.  I am not perfectly clear where that unique R comes in, but I think it has to do with some versions of the One Rabbit that does all the rabbitting.

Sent from my iPad

On Sep 11, 2012, at 5:38 PM, Martin Bays <mbays@hidden.email> wrote:

> * Tuesday, 2012-09-11 at 11:15 +0100 - And Rosta <and.rosta@hidden.email>:
> 
>> Martin Bays, On 11/09/2012 03:13:
>>> I'd just like to briefly surface to say that I'd also be very interested
>>> to see an account of this "andoxorxesian" l-.
>>> 
>>> In an attempt to prompt one, here's the impression I've got from my
>>> half-following of this thread:
>>>     you have la Ra Pa doing two things:
>>>    (a) creating a presupposition that the current situation
>>>        contains a unique individual satisfying R;
>> 
>> Yes, where the individual is the only individual thatsatisfies R.
>> 
>>>    (b) binding a to that unique individual.
>>> 
>>> Is that roughly right?
>> 
>> Yes. And the important thing to grasp is that that's where the rules
>> of the language end. The rules of the language don't tell you how to
>> interpret sentences; they don't tell you what to do when you encounter
>> "la Ra" yet you believe it is true that there are many R. I know how
>> *I* as a user would interpret them, but that's different from the
>> formal rules of the grammar. The formal rules of the grammar just give
>> the presupposition and leave it at that.
> 
> I'm not sure how to take this. How can I understand the presupposition
> "exists unique a such that Ra" without knowing how to interpret Ra?
> 
> Do you mean that you envision the rule as being a purely syntactic one,
> which converts "la Ra Pa" to an expression in a new formal language
> which (somewhere, I'm not sure where) includes an expression like
> "E! a. Ra", and that although you have in mind some way to interpret this
> new language (including interpreting this expression as
> a presupposition), you don't want to discuss how to interpret the new
> language?
> 
> If that's right, could you explain the reasoning behind this position?
> 
> In any case, I'm going to assume that what you actually have in mind is
> something like the following: confronted with "la Ra Pa", the will
> listener to try to guess the situation the speaker could be talking
> about, based on context and the information that this situation contains
> a unique individual a satisfying R, and then to interpret the speaker as
> claiming the truth of Pa in this situation. But see below for why I'm
> not really happy with this use of situations.
> 
>> You are welcome to develop a dialect that does have rules specifying
>> how to interpret sentences.
>> 
>>> If so, how does (a) work exactly? What's the
>>> scope of the presupposition, and what does "current situation" mean? Am
>>> I right to bring in situations, which I mean in the sense of
>>> http://plato.stanford.edu/entries/situations-semantics/, here?
>> 
>> The current situation is the one the truth-conditions of the l-
>> formula is evaluated against. I think distinguishing situations from
>> UoD is a helpful move.
> 
> Maybe. But in situational semantics (disclaimer: I don't actually know
> anything about situational semantics), claims are still meant to be
> evaluated against whole worlds.
> 
> One could try to turn the presupposition into an actual claim about
> subsituations:
>    w |= "la Ra Pa" iff
>    exists s<=w s.t. (
>        s |= exists unique a. R(a)
>        /\ s |= exists a. (R(a) /\ P(a)) )
> 
> , but sadly this doesn't fit the rule
>    "na la Ra Pa <=> la Ra na Pa"
> - just because there's a situation with a unique cat which isn't black
> doesn't mean there's no situation with a unique cat which is black.
> 
> I think it would help alot, actually, if you could clarify what you mean
> by this rule. In what sense is that equivalence to be read? If we
> interpret both sentences within the same situation, and that situation
> satisfies the presupposition, then of course they get the same truth
> value. Is that all that's meant? Or do you mean something stronger, that
> when speaking I can substitute one for the other and expect to convey
> the same information? I don't see how to get the latter.
> 
>> Then we can say that the scope of the presupposition is the l-
>> formula, which describes a situation, but that the 'referents' of
>> l-bound variables enter the general UoD. For example, in one formula
>> it might be presupposed that there is only one Martin, but in another
>> it might be allowed that there are many, and the UoD is populated both
>> by "the one-and-only Martin" and by sundry "one-of-many Martins".
>> 
>>> Furthermore, it seems that the intention is that this construction
>>> should work in concert with some ontological assumption that there are
>>> things called "myopic singulars". Is it possible to communicate with you
>>> in the language without understanding what those are? If, as I suspect,
>>> not, could you explain what they are?
>> 
>> A user could be of any of these three sorts:
>> 
>> A. The user construes things as types that have subtypes, using l to
>>  point to the type, and s & r to quantify over subtypes. Every subtype
>>  has its own subtypes so there are uncountably infinitely many types.
>> B. The user takes it that the world against which truthconditions are
>>  evaluated contains individuals and categories, these are different
>>  things, and it is clear which is which. The user uses l- to point to
>>  individuals and s- and r- to quantify over members of categories.
>> C. The user takes it that the world against which truthconditions are
>>  evaluated contains individuals and categories, these are different
>>  things, but it is not clear which is which -- is an apparent
>>  individual in fact different similar-looking individuals? Are
>>  apparently different individuals in fact the same individual? This
>>  user would avoid referring to individuals, instead so as to be on the
>>  safe side always quantifying over members of (possibly singleton)
>>  categories with -s and r- and avoiding l-.
> 
> I'll leave this here for now. I don't understand it yet, but I'm hoping
> to after some of the issues above are cleared up. One thing which might
> help, though: could you confirm my suspicion (based on vague
> recollection of what you've said in the context of lojban) that in all
> cases, you would have e.g. types of cats of various levels and
> (in B and C) individual cats all satisfying mlt_?
> 
>> I won't comment on the extent to which users of the different sorts
>> can communicate with each other. I think it's not a linguistic issue,
>> unless you were to give the language overt A- B- C- modes.
> 
> OK. The dictionary entry of 'mlt', however, is a linguistic issue
> (though not a grammatical issue).
> 
>> Myopic singulars are where you merely assume that any apparently
>> different instances of X are actually the same instance of X.
> 
> I'll leave this too.
> 
> Martin