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On 8/17/24 3:12 PM, olcott wrote:Not that. I am taking the hypothetical extreme positionOn 8/17/2024 1:45 PM, Richard Damon wrote:No, it isn't an "opinion", it is a set of definitions, and the logic system that comes out of them.On 8/17/24 2:19 PM, olcott wrote:>On 8/17/2024 1:10 PM, Richard Damon wrote:>On 8/17/24 2:04 PM, olcott wrote:>On 8/17/2024 12:51 PM, Richard Damon wrote:>>>
In other words, you are just admitting you don't understand how logic works.
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If you CHANGE an existing axiom, everything that depended on that axiom needs to be re-verified.
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If you ADD a new axiom, it doesn't affect ANY argument that doesn't try to use it, and thus doesn't affect Russel's Paradox.
OK.
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I add the definition for the True(L, x) predicate
and every instance of the notion of True changes
in every formal mathematical logic system.
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But either that changes what that instance means,
When I stipulate what True(L,x) means then that is done.
It does not go on and in any circle endlessly redefining itself.
Nope. You can say for YOUR usage, what you mean by True(L,x). You can't force others to use that,
Likewise ZFC is a mere opinion that most everyone chooses to ignore.
People are of course allowed to choose which ever set theory they want to use, but if they choose to use Naive Set Theory, they have the problem that it is known to be inconsistant, and thus any "proof" they build is suspect.
They can also shoose some other Set theory Theory, maybe even just ZF, or to one of the derived theorys like Morse-Kelly, or to something different like one of the New Foundations Systems. The key is you tend to need to specify if you differ from ZFC which is generally considered the default.
You seem to be having trouble with the words you are using.
Logic is currently defined to work contrary to the way that>Nope. You are just proving by the meaning of the words that you are totally ignorant of how logic works.or reinterprete what others have said or proven based on you stipulation, in fact, by stipulating that definition, anythig that uses any other definition of it becomes out of bounds for your argument.>
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Everything in logic the depended on some notion of True is
changed. Any logic operations that were not truth preserving
are discarded. The notion of valid inference is also changed
because it was not truth preserving.
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And needs to be reproved to see if it is still true.
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>When a conclusion is not a necessary consequence of all of its>
premises then the argument is invalid.
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Right, so YOUR argument here is invalid.
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It is proven totally true entirely on the basis of the
meaning of its words. Math conventions to the contrary
simply ignore this.
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Sorry, but that is the facts.
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