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|    sci.logic    |    Logic -- math, philosophy & computationa    |    262,912 messages    |
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|    Message 261,279 of 262,912    |
|    Mikko to All    |
|    Re: New formal foundation for correct re    |
|    26 Nov 25 10:50:05    |
      From: mikko.levanto@iki.fi              dart200 kirjoitti 26.11.2025 klo 4.38:       > On 11/25/25 5:19 PM, Python wrote:       >> Le 26/11/2025 à 02:09, dart200 a écrit :       >>> On 11/25/25 4:31 PM, Python wrote:       >>>> Le 26/11/2025 à 01:29, dart200 a écrit :       >> ..       >>>> Encoding Gödel’s proof inside Gödel numbers doesn’t defeat the       >>>> theorem —       >>>> that is the theorem.       >>>       >>> sorry, i mean if u encode literally godel's paper into godel's       >>> numbers...       >>>       >>> doesn't that produce a proof within the system, for the statement       >>> that has no proof within the system? ? ?       >>       >> No — encoding Gödel’s paper as Gödel numbers does not produce a proof       >> inside the system, and it cannot possibly do so.       >>       >> you get just a big natural number, representing these syntactic strings.       >>       >> But the theory (PA, ZFC, whatever formal system) does not       >> automatically recognize that number as a proof.       >>       >> Because for a number to count as a proof inside the system, it must be:       >>       >> ✔ A well-formed derivation       >> ✔ From axioms, using inference rules       >> ✔ Such that each step is checkable arithmetically       >>       >> Gödel proves (in meta-math) that the system cannot prove G if it is       >> consistent.       >> Nothing in the system can know why Gödel outside the system can see that.       >>       >> Encoding Gödel’s meta-reasoning into a massive integer doesn’t       >> activate the meta-reasoning inside the system.       >>       >> The formal system looks at the number and sees:       >>       >> just a number, with no significance unless it matches the definition       >> of a proof.       >>       >> It does not read the argument.       >> It does not interpret his English/German sentences.       >> It does not adopt his epistemic insight.       >>       >> Meta-reasoning ≠ internal derivation.       >>       >> Gödel numbering is like ZIP-compressing a PDF.       >> Feeding it into PA doesn't make PA understand the PDF.       >>       >> Gödel’s construction is self-referential, but the system remains blind       >> to the meta-narrative explaining that construction. The blind spot is       >> exactly why incompleteness holds.       >       > what if we could put a hard limit to the degree of incompeletness found       > within a formal system?              There are infinitely many undecidable sentences in Peano arithmetic.       The set of all sentences is countable.              --       Mikko              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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