Re: Contexts? (again)

Liar "paradoxes" are solved by considering the context of the statement.
Keith Devlin has a good discussion in his book "Logic and Information".
============ 
Dick McCullough 
knowledge := man do identify od existent done
knowledge haspart list of proposition

  ----- Original Message ----- 
  From: Miles Sabin 
  To: www-rdf-interest@w3.org 
  Sent: Thursday, November 21, 2002 5:35 AM
  Subject: Re: Contexts? (again)



  Sandro Hawke wrote,
  > My current suggested truth predicate is WellFormedAndTrue, where
  > being well-formed includes being able to be re-written in a
  > truth-preserving manner to a form without negated self-references;
  > this is (as far as I can tell) what KIF3 had, before they took it out
  > as being unnecessary for the intended apps.

  Doesn't this just give us another variant of the liar?

    This statement is not WellFormedAndTrue

  If it's false then it's both true and well-formed. If it's true then 
  it's either false or not well-formed. The only fixed point is "true but 
  not well-formed", and now you have to explain what _that_ means ... 
  seems a little fishy: true, but not rewritable in a truth preserving 
  way to a form without negated self-references?

  Cheers,


  Miles