Re: [lojban] tautologies

["Jorge Llambias" <jjllambias@hotmail.com>]

la pycyn cusku di'e

> The are now almost syntactically parallel, but the relation between {ju} 
> and
> {je da'auku} is not encoded as is the relation between {jenai} and {je 
> naku}.
> {ju} is not related to {je} in any regular way. Notice, you might just 
> as
> well have related {ju} to {janai da'auku} or {da'auku naja} or {jo 
> da'auku}.

Yes, of course. All of those are also equivalent.

> These all have the same truth values, but are otherwise only incidentally
> related to one another.

But are the connectives about anything else other than truth
values? What is this additional relationship that exists between
{je naku} and {jenai} but is absent in other combinations that
provide the same truth table? Is the equivalence between
{najo} and {jonai} of the interesting type, or just the same
truth value type?

> It seems to me that there is a difference between changing the referent of 
> a
> word and changing the whole proposition involved, even though changing a 
> word
> does change the proposition involved. In one case, you have a differnt 
> thing
> satisfying the sense of what is said, in the other you have a different 
> sense
> altogether.

Yes, I agree that there are differences, although I'm not too
clear on what exactly they are or what follows from them.

> It is when you say things like the above that I feel justified
> in thinking that you still are drawn to the notion that the answer to a
> question is just what fills the gap, rather than the whole sentence that
> answers it.

I was never drawn to that notion, so I will protest the "still".

> Put another way, {ta} is not {le ladru}, though it may happen to refer to 
> le
> ladru, to a particular bit of milk. But {ta se jdima makau} really is {ta 
> se
> jdima - 50 cents} or whatever the case may be -- even if you don't know 
> what
> proposition you are committing to, but you do know it is true.

I don't understand why {ta} is not {le ladru}. Isn't
{ta du le ladru} true? Of course the word "ta" is not the milk
it refers to, but then neither are the words "ta se jdima makau"
the proposition they refer to.

mu'o mi'e xorxes



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