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|    sci.logic    |    Logic -- math, philosophy & computationa    |    262,912 messages    |
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|    Message 262,632 of 262,912    |
|    olcott to Richard Damon    |
|    =?UTF-8?Q?Re=3A_G=C3=B6del=27s_G_has_nev    |
|    20 Jan 26 14:00:56    |
      XPost: sci.math, comp.theory, comp.ai.philosophy       From: polcott333@gmail.com              On 1/19/2026 11:29 PM, Richard Damon wrote:       > On 1/18/26 11:28 PM, olcott wrote:       >> On 1/18/2026 9:56 PM, Richard Damon wrote:       >>> On 1/18/26 10:19 PM, olcott wrote:       >>>> On 1/18/2026 7:24 PM, Python wrote:       >>>>> Le 19/01/2026 à 00:41, olcott a écrit :       >>>>> ..       >>>>>> I already just said that the proof and refutation of       >>>>>> Goldbach are outside the scope of PA axioms.       >>>>>>       >>>>>> Any proof or refutation of Goldbach would have to use       >>>>>> principles stronger than the axioms of PA, because PA       >>>>>> itself does not currently derive either direction.       >>>>>       >>>>> "currently" ? ? What kind of language is that? PA is what it is,       >>>>> it not changing with time !       >>>>>       >>>>> You could have said that about Fermat's theorem back in the day...       >>>>> It happens not to be the case.       >>>>>       >>>>> You are out of reason, Peter. Not only a liar, an hypocrite, but a       >>>>> fool.       >>>>>       >>>>       >>>> If its truth value cannot be determined in a finite       >>>> number of steps then it is not a truth bearer in PA,       >>>> otherwise it is a truth-bearer in PA with an unknown value.       >>>>       >>>       >>> So, you admit that you don't know how to classify it.       >>>       >>> Thus its truth-bearer status is unknown.       >>>       >>> Thus, your claim that it is outside of PA is just a LIE.       >>>       >>       >> No it was a mistake. Here is my correction:       >> If Goldbach's truth value cannot be determined in a       >> finite number of steps then it is not a truth bearer       >> in PA, otherwise it is a truth-bearer in PA with an       >> unknown truth value.       >       > But,       >       >>       >> This has no effect on my claim that I got rid of       >> Gödel Incompleteness.       >       > Sure it does, because it shows your system is not well founded.       >              Not at all. At you own repeated insistence the       domain of all of my systems is the set of knowledge       "true on the basis of meaning expressed in language"              >>       >> When we change the foundation of formal systems       >> to proof theoretic semantics and add my truth       >> predicates then Gödel's claim of applying to       >> every formal system that can do a little bit of       >> arithmetic becomes simply false.       >>       >       > But proof-theoretic semantics are not-well-founded when applied to       > systems like PA, as they need to use truth-conditional logic to       > determine their proof-theoretic fvalues.       >              “You’re assuming proof‑theoretic semantics must be grounded       in truth‑conditional semantics. That assumption is false.       In proof‑theoretic semantics, meaning is given by inferential       rules, not external truth‑conditions.              So the internal truth predicate for PA is perfectly well‑founded,       and Gödel’s semantic argument no longer applies.”              >> Every attempt at showing incompleteness |
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