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|    sci.logic    |    Logic -- math, philosophy & computationa    |    262,912 messages    |
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|    Message 262,676 of 262,912    |
|    olcott to Richard Damon    |
|    =?UTF-8?Q?Re=3A_G=C3=B6del=27s_G_has_nev    |
|    22 Jan 26 18:33:12    |
      XPost: sci.math, comp.theory       From: polcott333@gmail.com              On 1/22/2026 6:17 PM, Richard Damon wrote:       > On 1/22/26 12:18 AM, olcott wrote:       >> On 1/21/2026 10:59 PM, Python wrote:       >>> Le 22/01/2026 à 04:54, olcott a écrit :       >>>> On 1/21/2026 9:37 PM, Richard Damon wrote:       >>>>> On 1/21/26 10:45 AM, olcott wrote:       >>>>>> On 1/21/2026 6:35 AM, Richard Damon wrote:       >>>>>>> On 1/20/26 11:54 PM, olcott wrote:       >>>>>>>> On 1/20/2026 10:04 PM, Richard Damon wrote:       >>>>>>>>> On 1/20/26 4:23 PM, olcott wrote:       >>>>>>>>>> On 1/19/2026 11:29 PM, Richard Damon wrote:       >>>>>>>>>>>> My system is not supposed to decide in advance whether       >>>>>>>>>>>> Goldbach is well‑founded. A formula becomes a truth‑bearer       >>>>>>>>>>>> only when PA can classify it in finitely many steps.       >>>>>>>>>>>> Goldbach may or may not be classifiable; that’s an open       >>>>>>>>>>>> computational fact, not a semantic requirement. This has       >>>>>>>>>>>> no effect on Gödel, because Gödel’s sentence is structurally       >>>>>>>>>>>> non‑truth‑bearing, not merely unclassified.       >>>>>>>>>>>       >>>>>>>>>>> Which shows that you don't understand what logic systems are.       >>>>>>>>>>>       >>>>>>>>>>> The don't "Decide" on truths, they DETERMINE what is true.       >>>>>>>>>>>       >>>>>>>>>>> Your problem is that either there is, or there isn't a finite       >>>>>>>>>>> length proof of the statement.       >>>>>>>>>>>       >>>>>>>>>>> Semantics can't change in a formal system, or they aren't       >>>>>>>>>>> really semantics.       >>>>>>>>>>>       >>>>>>>>>>> Your problem is you don't understand Godel statement, as it       >>>>>>>>>>> *IS* truth bearing as it is a simple statement with no middle       >>>>>>>>>>> ground, does a number exist that satisfies a given       >>>>>>>>>>> relationship. Either there is, or there isn't. No other       >>>>>>>>>>> possiblity.       >>>>>>>>>>>       >>>>>>>>>>> You confuse yourself by forgetting that words have actual       >>>>>>>>>>> meaning, and that meaning can depend on using the right context.       >>>>>>>>>>>       >>>>>>>>>>> Godel's G is a statement in the system PA.       >>>>>>>>>>>       >>>>>>>>>>> It is a statement about the non-existance of a natural number       >>>>>>>>>>> that satisfies a particular computable realtionship.       >>>>>>>>>>>       >>>>>>>>>>> It is a statement defined purely by mathematics and thus       >>>>>>>>>>> doesn't "depend" on other meaning.       >>>>>>>>>>>       >>>>>>>>>>> It is a mathematical FACT, that for this relationship, no       >>>>>>>>>>> matter what natural number we test, none will satisfy it, so       >>>>>>>>>>> its assertation that no number satisfies it makes it true.       >>>>>>>>>>       >>>>>>>>>> PA augmented with its own True(PA,x) and False(PA,x)       >>>>>>>>>> is a decider for Domain of every expression grounded       >>>>>>>>>> in the axioms of PA.       >>>>>>>>>       >>>>>>>>> No, it becomes inconsistant.       >>>>>>>>>       >>>>>>>>>>       >>>>>>>>>> A system at a higher level of inference than PA can       >>>>>>>>>> reject any expressions that define a cycle in the       >>>>>>>>>> directed graph of the evaluation sequence of PA       >>>>>>>>>> expressions. Then PA could test back chained inference       >>>>>>>>>> from expression x and ~x to the axioms of PA.       >>>>>>>>>>       >>>>>>>>>       >>>>>>>>> But there is no "cycle" in the statement of G. It is PURELY a       >>>>>>>>> statement of the non-existance of a number that satisfies a       >>>>>>>>> purely mathematic relationship (which has no meaning by itself       >>>>>>>>> in PA).       >>>>>>>>>       >>>>>>>>       >>>>>>>> Even the relationship cannot exist |
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