- From: Seth Russell <seth@robustai.net>
- Date: Mon, 9 Apr 2001 11:03:58 -0700
- To: "pat hayes" <phayes@ai.uwf.edu>
- Cc: <www-rdf-logic@w3.org>
From: "pat hayes" <phayes@ai.uwf.edu> > >From: "Graham Klyne" <GK@ninebynine.org> > > > > > Until this, I never got any sense that open world negation was > > > impossible. > > > >Maybe that's because open world Truth is impossible too. Rather Truth is > >relative to active processes. Perhaps the best we can hope for is a kind of > >propositional attitude that each agent calculates for it's self. > > What on earth are you guys talking about? Truth and falsity have got > nothing to do with the openness or closedness of the world, and > nothing much to do with activity or processes. Well I can't speak for Grahm, but I hope I know what I meant. Now I will be talking quite informally, so if i mis apply a precise term, I apologize in advance, and would ask for you to try to look behind my sloppyness, for whatever, if anything, may lie beneath. If someone creates a formal system in which all axioms, syntax, and operations are specified; then the statements of such a system can be considered True\False and we can operate on that state with negation. I would call such a system "closed". The opposite situation is where the axioms and operations are not all known - perhaps the only thing that is known is the syntax of the statements. I would call such a system "open". My thesis, of course, is that the real world, that world in which we human agents seem to live and also the world we inhabit when we surf the web, is open and that there does not seem to be any absolute or formal meaning to the description of statements as True\False or the negation of that description. In other words Truth in the real world and on the web is relative. How far afield am I here ? ... thanks in advance for helping with my education ... Seth
Received on Monday, 9 April 2001 14:07:14 UTC