Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: olcott Newsgroups: sci.logic Subject: Re: How a True(X) predicate can be defined for the set of analytic knowledge Date: Sat, 5 Apr 2025 22:11:32 -0500 Organization: A noiseless patient Spider Lines: 75 Message-ID: References: <7e0f966861ff1efd916d8d9c32cc9309fd92fe82@i2pn2.org> <3ab00594a6cdaa3ca8aa32da86b865f3a56d5159@i2pn2.org> <45167877871179050e15837d637c4c8a22e661fd@i2pn2.org> <4c1393a97bc073e455df99e0a2d3a47bfc71d940@i2pn2.org> <7286761fb720294d7a87d883fc82c8f8cf95a460@i2pn2.org> <6edcdf0fa4f6ec503240b27a5801f93c470ed7d6@i2pn2.org> <0d7e70842fd4f479836f288d42e65d9e583b3b2c@i2pn2.org> <3c2784ad9f46e46b3c90a02ead5985c68ba30db8@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Sun, 06 Apr 2025 05:11:33 +0200 (CEST) Injection-Info: dont-email.me; posting-host="793f083d72b4d17330ab83742da338c2"; logging-data="3989880"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19ibGGZxgpt1Dh7Fs8Uiuem" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:vVxZXNrCtXtYTJPLqA9jaELQgqQ= Content-Language: en-US X-Antivirus-Status: Clean X-Antivirus: Norton (VPS 250405-6, 4/5/2025), Outbound message In-Reply-To: <3c2784ad9f46e46b3c90a02ead5985c68ba30db8@i2pn2.org> Bytes: 4928 On 4/5/2025 5:22 PM, Richard Damon wrote: > On 4/5/25 5:01 PM, olcott wrote: >> On 4/5/2025 3:03 PM, Richard Damon wrote: >>> On 4/5/25 1:51 PM, olcott wrote: >>>> On 4/5/2025 2:30 AM, Mikko wrote: >>>>> On 2025-04-03 18:59:15 +0000, olcott said: >>>>> >>>>>> On 4/3/2025 2:03 AM, Mikko wrote: >>>>>>> On 2025-04-02 15:59:47 +0000, olcott said: >>>>>>> >>>>>>>> On 4/2/2025 4:20 AM, Mikko wrote: >>>>>>>>> On 2025-04-01 17:51:29 +0000, olcott said: >>>>>>>>> >>>>>>>>>> >>>>>>>>>> All we have to do is make a C program that does this >>>>>>>>>> with pairs of finite strings then it becomes self-evidently >>>>>>>>>> correct needing no proof. >>>>>>>>> >>>>>>>>> There already are programs that check proofs. But you can make >>>>>>>>> your own >>>>>>>>> if you think the logic used by the existing ones is not correct. >>>>>>>>> >>>>>>>>> If the your logic system is sufficiently weak there may also be >>>>>>>>> a way to >>>>>>>>> make a C program that can construct the proof or determine that >>>>>>>>> there is >>>>>>>>> none. >>>>>>>> >>>>>>>> When we define a system that cannot possibly be inconsistent >>>>>>>> then a proof of consistency not needed. >>>>>>> >>>>>>> But a proof of paraconsistency is required. >>>>>> >>>>>> When it is stipulated that {cats} {Animals} >>>>>> When it is stipulated that {Animals} {Living Things} >>>>>> Then the complete proof of those is their stipulation. >>>>>> AND {Cats} {Living Things} is semantically entailed. >>>>> >>>>> For that sort of system paraconsistency is possible, depending on >>>>> what else there is in the system. >>>>> >>>> >>>> https://en.wikipedia.org/wiki/Paraconsistent_logic >>>> Starting with a consistent set of basic facts (AKA axioms) >>>> while only allowing semantic logical entailment thus >>>> truth preserving operations does not seem to allow >>>> any contradictions, thus paraconsistency. >>>> Try to provide a concrete counter-example. >>>> >>> >>> Your problem is you are making the error of assuming the concluion. >>> >>> You can't tell that you axioms ARE consistant excpet by proving that >>> the system itself is consistant, >> >> Counter-factual. A system with a consistent set of basic >> facts can possibly have inference rules that derive >> inconsistency because these rules are less than perfectly >> truth preserving. >> > > How do you know your axioms are consistant? > > You don't seem to understand that basic problem, because you are just > too stupid. > > You can't stipulate that the axioms are consistent. > When tested against each other they have no contradictions. -- Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer