Path: ...!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: dbush Newsgroups: comp.theory Subject: Re: Computable Functions --- finite string transformation rules Date: Sat, 26 Apr 2025 16:45:10 -0400 Organization: A noiseless patient Spider Lines: 119 Message-ID: References: <6d9ae3ac08bbbe4407fc3612441fc2032f949a3d@i2pn2.org> <7ac75991b443ba53d52960ddb1932524dea8e03f@i2pn2.org> <40b048f71fe2ed2a8ef11d2d587c765c8fcbc977@i2pn2.org> <99367baaadfd647c1d75f4236345a3243a439a0b@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sat, 26 Apr 2025 22:45:10 +0200 (CEST) Injection-Info: dont-email.me; posting-host="0137d90e990b2d35ee9d34fffa59920d"; logging-data="3236553"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18DwqzReVv4B++s1+HVpoYA" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:RBOmLJnfzsX2gBHCdM/wAHICKls= Content-Language: en-US In-Reply-To: Bytes: 7135 On 4/26/2025 4:41 PM, olcott wrote: > On 4/26/2025 3:23 PM, joes wrote: >> Am Sat, 26 Apr 2025 14:46:12 -0500 schrieb olcott: >>> On 4/26/2025 1:22 PM, Fred. Zwarts wrote: >>>> Op 26.apr.2025 om 19:28 schreef olcott: >>>>> On 4/26/2025 3:58 AM, Fred. Zwarts wrote: >>>>>> Op 25.apr.2025 om 23:21 schreef olcott: >>>>>>> On 4/25/2025 8:56 AM, joes wrote: >>>>>>>> Am Thu, 24 Apr 2025 19:03:34 -0500 schrieb olcott: >> >>>>>>>> The program EE(){ HHH(EE); } also halts and cannot be simulated by >>>>>>>> HHH. >>>>>>>> >>>>>>> HHH cannot possibly do this without violating the rules of the x86 >>>>>>> language. >>>>>> HHH already violates the rules of the x86 language by prematurely >>>>>> aborting the halting program. >>>>> >>>>> Everyone claims that HHH violates the rules of the x86 language yet no >>>>> one can point out which rules are violated >>>> >>>> It has been pointed out many times. It is against the rules of the x86 >>>> language to abort a halting function. >>> >>> You remains stupidly wrong about this because you refuse to show what >>> step of DD is not emulated by HHH according to the finite string >>> transformation rules specified by the x86 language. > >> All instructions after the abort are not emulated. >> > > Still stupidly wrong. > > *The best selling author of theory of computation textbooks* > > >     If simulating halt decider H correctly simulates its input D > >     until H correctly determines that its simulated D would never >     stop running unless aborted then > >     H can abort its simulation of D and correctly report that D >     specifies a non-halting sequence of configurations. > > But not to what you think he agreed to: On Monday, March 6, 2023 at 2:41:27 PM UTC-5, Ben Bacarisse wrote: > Fritz Feldhase writes: > > > On Monday, March 6, 2023 at 3:56:52 AM UTC+1, olcott wrote: > >> On 3/5/2023 8:33 PM, Fritz Feldhase wrote: > >> > On Monday, March 6, 2023 at 3:30:38 AM UTC+1, olcott wrote: > >> > > > >> > > I needed Sipser for people [bla] > >> > > > >> > Does Sipser support your view/claim that you have refuted the halting theorem? > >> > > >> > Does he write/teach that the halting theorem is invalid? > >> > > >> > Tell us, oh genius! > >> > > >> Professor Sipser only agreed that [...] > > > > So the answer is no. Noted. > > > >> Because he has >250 students he did not have time to examine anything > >> else. [...] > > > > Oh, a CS professor does not have the time to check a refutation of the > > halting theorem. *lol* > I exchanged emails with him about this. He does not agree with anything > substantive that PO has written. I won't quote him, as I don't have > permission, but he was, let's say... forthright, in his reply to me. > On 8/23/2024 5:07 PM, Ben Bacarisse wrote: > joes writes: > >> Am Wed, 21 Aug 2024 20:55:52 -0500 schrieb olcott: > >>> Professor Sipser clearly agreed that an H that does a finite simulation >>> of D is to predict the behavior of an unlimited simulation of D. >> >> If the simulator *itself* would not abort. The H called by D is, >> by construction, the same and *does* abort. > > We don't really know what context Sipser was given. I got in touch at > the time so do I know he had enough context to know that PO's ideas were > "wacky" and that had agreed to what he considered a "minor remark". > > Since PO considers his words finely crafted and key to his so-called > work I think it's clear that Sipser did not take the "minor remark" he > agreed to to mean what PO takes it to mean! My own take if that he > (Sipser) read it as a general remark about how to determine some cases, > i.e. that D names an input that H can partially simulate to determine > it's halting or otherwise. We all know or could construct some such > cases. > > I suspect he was tricked because PO used H and D as the names without > making it clear that D was constructed from H in the usual way (Sipser > uses H and D in at least one of his proofs). Of course, he is clued in > enough know that, if D is indeed constructed from H like that, the > "minor remark" becomes true by being a hypothetical: if the moon is made > of cheese, the Martians can look forward to a fine fondue. But, > personally, I think the professor is more straight talking than that, > and he simply took as a method that can work for some inputs. That's > the only way is could be seen as a "minor remark" with being accused of > being disingenuous. On 8/23/2024 9:10 PM, Mike Terry wrote: > So that PO will have no cause to quote me as supporting his case: what > Sipser understood he was agreeing to was NOT what PO interprets it as > meaning. Sipser would not agree that the conclusion applies in PO's > HHH(DDD) scenario, where DDD halts.