From a.rosta@lycos.co.uk Fri Sep 20 06:27:04 2002
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To: <lojban@yahoogroups.com>
Subject: RE: [lojban] tu'o usage
Date: Fri, 20 Sep 2002 14:28:43 +0100
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From: "And Rosta" <a.rosta@lycos.co.uk>
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pc:
> arosta@uclan.ac.uk writes:
> <<
> 
> 1. A single-member category is logically simpler than a many-member
> category. It is helpful to users to mark this absence of complexity
> (e.g. it says "Don't worry about quantifier scope"), but it is 
> counterintuitive to have to add extra coomplexity, in the form of an 
> extra word {pa} , in order to signal an absence of complexity!
> 
> >>
> I'm not sure what this means. Most one-member categories (I'm not 
> sure what that means either, so I will read it as "set") 

Read it as "intensionally-defined set".

> that we are 
> interested in are enormously more complex than the set of dogs, say. 

?

> But moreover, {pa} is simpler by any normal measurement than {tu'o} 
> (assuming that {tu'o} has any content at all).

I said that {tu'o} is simpler than {lo pa}, by the obvious criterion
of word count.

> <<
> 2. {lo pa broda} claims that there is only one broda. {tu'o broda}
> does not make such a claim; it is just that there is no other
> sensible interpretation for it, so it implies that there is only one
> broda. {lo'e broda} does not claim that there is exactly one broda,
> but is an instruction to conceptualize broda as a single-member
> category.
> >>
> If some claim is essential for some operation, it is always better to 
> make it than to imply it. 

Quite so. And conversely, to make an inessential claim is a distraction
from the essential claim.

> The interpretation of {lo'e} -- xorxes' 
> {lo'e} that is -- is contentious and, amazingly, even less clear than 
> xorxes original or modified claims. 

I haven't totally given up on making you able to understand it,
but past experience makes me pessimistic. On the whole, if Jorge
and I understand and agree with each other, I'm usually fairly
confident that we're onto the Right Idea.

--And.

