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Path: ...!weretis.net!feeder9.news.weretis.net!news.nk.ca!rocksolid2!i2pn2.org!.POSTED!not-for-mail From: joes <noreply@example.org> Newsgroups: comp.theory Subject: Re: Defining a correct halt decider Date: Wed, 4 Sep 2024 08:10:33 -0000 (UTC) Organization: i2pn2 (i2pn.org) Message-ID: <0ba58a910e75f101ed4c37d975cf89a5fe1b85d0@i2pn2.org> References: <vb4npj$1kg8k$1@dont-email.me> <vb6i8p$39fhi$1@dont-email.me> <vb72a4$3b4ub$6@dont-email.me> <bcef318ec77a8792164a6626ba6d8a05007311da@i2pn2.org> <vb7pig$3evto$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Wed, 4 Sep 2024 08:10:33 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="801060"; mail-complaints-to="usenet@i2pn2.org"; posting-account="nS1KMHaUuWOnF/ukOJzx6Ssd8y16q9UPs1GZ+I3D0CM"; User-Agent: Pan/0.145 (Duplicitous mercenary valetism; d7e168a git.gnome.org/pan2) X-Spam-Checker-Version: SpamAssassin 4.0.0 Bytes: 4620 Lines: 80 Am Tue, 03 Sep 2024 14:54:56 -0500 schrieb olcott: > On 9/3/2024 1:53 PM, joes wrote: >> Am Tue, 03 Sep 2024 08:17:56 -0500 schrieb olcott: >>> On 9/3/2024 3:44 AM, Mikko wrote: >>>> On 2024-09-02 16:06:11 +0000, olcott said: >>>> >>>> Your "definition" fails to specify "encoding". There is no standard >>>> encoding of Turing machines and tape contents. >>> That is why I made the isomorphic x86utm system. >>> By failing to have such a concrete system all kinds of false >>> assumptions cannot be refuted. >> What would those assumptions be? >>> The behavior of DDD emulated by HHH** <is> different than the behavior >>> of the directly executed DDD** **according to the semantics of the x86 >>> language >> How can the same code have different semantics? > The pathological relationship between DDD and HHH really cannot be > simply ignored as if it does not exist. How is it ignored? >>> HHH is required to report on the behavior tat its finite string input >>> specifies even when this requires HHH to emulate itself emulating DDD. >> The input specifies an aborting HHH - which you don’t simulate. > void DDD() > { > HHH(DDD); > OutputString("This code is unreachable by DDD emulated by HHH"); > } I thought HHH returned „DDD doesn’t halt, so I aborted it”? >>> DDD never halts unless it reaches its own final halt state. The fact >>> that the executed HHH halts has nothing to do with this. >> Other than that DDD calls HHH? >>> HHH is not allowed to report on the computation that itself is >>> contained within. >> Then it is only partial, and doesn’t even solve the case it was built >> for. > sum(3,4) is not allowed to report on the sum of 5 + 6 for the same > reason. HHH(DDD) cannot report on behavior that it cannot see. It has complete information, so it must do something wrong. > HHH cannot correctly report on the AFTER-THE-FACT behavior that it has > aborted its simulation BEFORE-THE-FACT. Can you expand on this? >>> Except for the case of pathological self-reference the behavior of the >>> directly executed machine M is always the same as the correctly >>> simulated finite string ⟨M⟩. >> That sure sounds like a mistake to me. > I initially took disagreeing with this as despicable lying bastards > playing sadistic head games. > I called Ben this and that is why he is mad at me. Understandable. Have you tried apologising? >>> That no one has noticed that they can differ does not create an axiom >>> where they are not allowed to differ. >> They were never allowed, that was the definition. > When you make a definition that halt deciders compute the mapping from > their inputs to the behavior that these inputs specify > and textbooks say things that seem to disagree with definition then > gullible sheep will agree with the textbooks. I’d rather believe the textbooks than your definition. >>> No one noticed that they differ only because everyone rejected the >>> idea of a simulating halt decider out-of-hand without review. >> I think after 3 years that excuse has grown a bit stale. > For three freaking years the gullible sheep on this forum continue to > believe that the pathological relationship of the decider to its input > does not change the behavior of this input The input exists independently of its simulation. > *EVEN WHEN IT IS CONCLUSIVELY PROVED THAT IT DOES CHANGE THIS BEHAVIOR* Empirical evidence can be flawed. -- Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math: It is not guaranteed that n+1 exists for every n.