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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: olcott <polcott333@gmail.com> Newsgroups: sci.logic Subject: Re: How a True(X) predicate can be defined for the set of analytic knowledge Date: Wed, 2 Apr 2025 21:57:59 -0500 Organization: A noiseless patient Spider Lines: 62 Message-ID: <vsktfo$378kj$15@dont-email.me> References: <vrfvbd$256og$2@dont-email.me> <vrjn82$1ilbe$2@dont-email.me> <vrmpc1$bnp3$1@dont-email.me> <vrmteo$cvat$6@dont-email.me> <vru000$33rof$1@dont-email.me> <vrug71$3gia2$6@dont-email.me> <0306c3c2d4a6d05a8bb7441c0b23d325aeac3d7b@i2pn2.org> <vrvnvv$ke3p$1@dont-email.me> <vs0egm$1cl6q$1@dont-email.me> <vs1f7j$296sp$2@dont-email.me> <vs3ad6$2o1a$1@dont-email.me> <vs4sjd$1c1ja$8@dont-email.me> <vs63o2$2nal3$1@dont-email.me> <vs6v2l$39556$17@dont-email.me> <vs8hia$13iam$1@dont-email.me> <vs8uoq$1fccq$2@dont-email.me> <vsb4in$14lqk$1@dont-email.me> <vsb9d5$19ka5$1@dont-email.me> <04aa9edbe77f4e701297d873264511f820d85526@i2pn2.org> <vsbu9j$1vihj$1@dont-email.me> <vsdlso$3shbn$2@dont-email.me> <vsen5l$th5g$5@dont-email.me> <vsg1b2$2ed9k$1@dont-email.me> <vsh9c9$3mdkb$2@dont-email.me> <vsj073$1g8q1$1@dont-email.me> <vsjn4k$26s7s$3@dont-email.me> <80b5a3b38362ba5fd57348f78fbdc0d3b5f1c167@i2pn2.org> <vskoh1$378kj$5@dont-email.me> <27033d4449296dac8c675e73ba2811bdd14385c7@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Thu, 03 Apr 2025 04:58:00 +0200 (CEST) Injection-Info: dont-email.me; posting-host="3670ccff229fdc0c136848dacf82765a"; logging-data="3383955"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+fDq//BcwsGriY3aQs3t2y" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:55GsGf1EW8QH7rcTfgrCDXpV6/U= X-Antivirus: Norton (VPS 250402-4, 4/2/2025), Outbound message In-Reply-To: <27033d4449296dac8c675e73ba2811bdd14385c7@i2pn2.org> X-Antivirus-Status: Clean Content-Language: en-US Bytes: 4311 On 4/2/2025 8:58 PM, Richard Damon wrote: > On 4/2/25 9:33 PM, olcott wrote: >> On 4/2/2025 5:07 PM, Richard Damon wrote: >>> On 4/2/25 12:03 PM, olcott wrote: >>>> On 4/2/2025 4:32 AM, Mikko wrote: >>>>> On 2025-04-01 17:56:25 +0000, olcott said: >>>>> >>>>>> On 4/1/2025 1:33 AM, Mikko wrote: >>>>>>> On 2025-03-31 18:33:26 +0000, olcott said: >>>>>>> >>>>>>>> >>>>>>>> Anything the contradicts basic facts or expressions >>>>>>>> semantically entailed from these basic facts is proven >>>>>>>> false. >>>>>>> >>>>>>> Anything that follows from true sentences by a truth preserving >>>>>>> transformations is true. If you can prove that a true sentence >>>>>>> is false your system is unsound. >>>>>> >>>>>> Ah so we finally agree on something. >>>>>> What about the "proof" that detecting inconsistent >>>>>> axioms is impossible? (I thought that I remebered this). >>>>> >>>>> A method that can always determine whether a set of axioms is >>>>> inconsistent >>>>> does not exist. However, there are methods that can correctly >>>>> determine >>>>> about some axiom systems that they are inconsistent and fail on >>>>> others. >>>>> >>>>> The proof is just another proof that some function is not Turing >>>>> computable. >>>>> >>>> >>>> A finite set of axioms would seem to always be verifiable >>>> as consistent or inconsistent. This may be the same for >>>> a finite list of axiom schemas. >>>> >>> >>> Think of how many statements can be constructed from a finite >>> alphabet of letters. >>> >>> Can you "test" every statement to see if it is consistant? >>> >> >> Is "LKNSDFKLWRLKLKNKUKQWEEYIYWQFGFGH" consistent or inconsistent? >> Try to come up with a better counter-example. > > It depends on what each of those letters mean. > So say what they mean to form your counter-example showing that consistency across a finite set of axioms is undecidable. PUT UP OR SHUT UP. > You should know better than that, but you don't, because you really are > too stupid. > -- Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer