- From: Seth Russell <seth@robustai.net>
- Date: Sat, 26 May 2001 08:47:37 -0700
- To: "Bill Andersen" <andersen@ontologyworks.com>, "pat hayes" <phayes@ai.uwf.edu>
- Cc: "RDF Logic" <www-rdf-logic@w3.org>
From: "Bill Andersen" <andersen@ontologyworks.com> > Hi all. I'm new to the list and usually I like to read for a while before > writing but ... I just can't help myself! Please forgive me. Apology not accepted ... you should have written sooner! > > Actually I think it is quite easy to define the truth-value 'Truth'. It's > > simply an attitude adopted by an agent towards a particular statement. Look > > ma, no metaphysics :) > > You don't have a metaphysics? Then what are "attitude", "agent", and > "statement"? Hmmmm ... nested cutely under your well framed question seems to me to be the assumption that to have a metaphysics, is to have an ontology. Well Fine :)) Where is it that I go, to start my ontology ? > If a planet explodes on the other side of the universe where there are no > "agents" is it in fact "seth-russel-true" that there is one less planet than > before the time of the explosion? Interesting question ... very uninteresting place you have imagined where there are no agents .... but no! .... it is in fact urn:robustai.net/attitudes/SethRussell#NonSense that there is one less planet there then before (what time of the explosion?). > Ok ... I'm an "agent" and I have the "seth-russel-true" "attitude" toward > the following "statement" (which we will call S): Then you are a liar, because you are not Seth Russell. > [1] "S is false" But since you asked, Seth Russell has calculate the attitude urn:robustai.net/attitudes/SethRussell#NonSense toward statement [1]. >Seems your theory of "truth" needs some work. How so? > > Yeah this is pretty much the way numbers are defined with set theory. But > > I still have a trouble with using this technique of defining a sequence. My > > thesis is that 'ordering' is a first principal, is prior, is axiomatic (at > > least to humans and the systems they tend to construct). > > Look out - words like "prior [to mathematics]" are getting awfully close to > metaphysics! I'm sure your right. I've been struggling with arriving at a good ontology to use to express this term "prior, axiomatic, innate, a first principal, atomic". Any suggestions are certainly very welcome. If 'Thing' be the name of the top class of our ontology, then a subclass of that might be named 'Pattern' with 'Sequence' being an obvious name of a subClass thereof. Yet any Thing isA Concept, least it not exist in our ontology, and a concept seems to me to be just a Pattern and we are not allowed to loop. ... so go figure .... > > It seems to me > > that to disprove this thesis you would need to be able to define an order > > without using anything that presupposes that order already. Your syntactic > > string (sequence of characters) above of course contains that > > presupposition. > > You are confused. I'm beginning to think that is a truism; sience it seems urn:robustai.net/attitudes/SethRussell#True in any case i examine :( >The sequence of characters is irrelevant. It is meant to > encode a representation of a set, which is not presupposed to have any such > ordering. You seem here to inform me of the state of affairs that I had affirmed already at [#here1]. Was that merely an oversight on your part, or had you wished to imply some additional information here ? >It is the properties of that set, interpreted via the axioms of > set theory (particularly equality), that make the representation conform to > our intuitions about orderings. I fail to see how any symmetric relationship (namely equality) could ever establish a sequence. >Note this makes no metaphysical appeal to > the notion of an order whatsoever -- it simply is one way (as Pat pointed > out, I think, there are many) to represent the notion of order. And do you have any refutation to my rather clumsy attempt [2] to deny that Pat and his predecessors whom I take to have hung out with Guiseppe Peano, have successfully represented order in a to-our-ontology valid method ? [2] http://robustai.net/mentography/order.gif > If you want to talk about metaphysical order, then you will have to invoke > an appropriate theory of states-of-affairs, which has nothing to do with > what Pat talked about. I didn't know that I would have been wanting to talk of a thing that could have been called 'metaphysical order'. All I wanted to do was to represent a sequence without calling upon a medium that already presupposed sequence. Or, iow, I would like to know how I could describe a sequence to an alien agent that had no experience with either space or time. [#here1] > > But let's forgive that trespass for a moment, because I > > know what this string means and have interpreted it in a graph [1] quite > > apart from the ASCII string you used. > > What topological properties does your graph have? Ahhh ... now there's the rub .... discussing that is why i asked my dumb questions originally. I claim that a labeled directed graph has intrinsic topological properties that need no explaining. Pat, and now you, seem not to be able to see them. I keep wondering whether this is Pat's (and now your) obtuscience or simply my stupidity. >Sounds like it "contains a presupposition". And what presupposition would that be ??????? >So you want to use the axioms of graph theory instead of > set theory, go ahead. You win a cookie. Ahhh ... a delicious cookie indeed ... when can i take the first bite ? I must admit that I have enjoyed answering your letter .... thanks for the dialogue ... Seth
Received on Saturday, 26 May 2001 12:28:22 UTC