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Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: olcott <polcott333@gmail.com> Newsgroups: comp.theory Subject: Re: Halting Problem: What Constitutes Pathological Input Date: Wed, 7 May 2025 10:48:15 -0500 Organization: A noiseless patient Spider Lines: 47 Message-ID: <vvfvbv$130t3$8@dont-email.me> References: <GE4SP.47558$VBab.42930@fx08.ams4> <vvat0g$vtiu$1@dont-email.me> <vvatf3$o4v0$3@dont-email.me> <vvaut0$vtiu$4@dont-email.me> <vvav6o$o4v0$4@dont-email.me> <vvb329$15u5b$1@dont-email.me> <vvb37g$1451r$1@dont-email.me> <vvb43f$15u5b$4@dont-email.me> <vvb4ok$o4v0$9@dont-email.me> <vvb52g$15u5b$6@dont-email.me> <vvb5ca$o4v0$10@dont-email.me> <vvb5vp$15u5b$7@dont-email.me> <vvb675$o4v0$11@dont-email.me> <vvb9d7$1av94$3@dont-email.me> <vvbani$1b6l1$1@dont-email.me> <vvbb6s$1av94$4@dont-email.me> <vvbcb3$1b6l1$2@dont-email.me> <vvbe0j$1av94$8@dont-email.me> <vvbecc$1b6l1$6@dont-email.me> <vvbhk0$1ijna$1@dont-email.me> <vvbjjg$1kegb$1@dont-email.me> <vvbk93$1l4cf$1@dont-email.me> <vvbkft$1kegb$4@dont-email.me> <vvbl71$1ljaj$1@dont-email.me> <vvbma3$1kegb$5@dont-email.me> <vvbmp0$1ljaj$2@dont-email.me> <vvbqd5$1tr5o$1@dont-email.me> <vvbrha$1us1f$1@dont-email.me> <b5dffdb99fdbfe0cd74914de4d51abe0aa439e7d@i2pn2.org> <vvdj0r$3cbpq$9@dont-email.me> <vvf73c$tv4n$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Wed, 07 May 2025 17:48:15 +0200 (CEST) Injection-Info: dont-email.me; posting-host="ee5137430f56269cd3e6381ddf24cf46"; logging-data="1147811"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/hMs5vWBKMo75YnR3XAG6O" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:XKVvrq4F2Njvw09azKiawXc7WvQ= X-Antivirus: Norton (VPS 250507-2, 5/7/2025), Outbound message X-Antivirus-Status: Clean In-Reply-To: <vvf73c$tv4n$1@dont-email.me> Content-Language: en-US On 5/7/2025 3:54 AM, Mikko wrote: > On 2025-05-06 18:05:15 +0000, olcott said: > >> That everyone here thinks that HHH can simply ignore >> the rules of the x86 language and jump over the "call" >> instruction to the "ret" instruction seems quite stupid >> to me. > > The halting problem does not prohibit such skip so in that sense > it is OK. > > However, in order to correctly determine whether DD halts > it may need to know whether the called HHH returns and what it > returns if it does. > The call from DD emulated by HHH cannot possibly return. The recursive emulation just keep getting deeper until HHH correctly recognizes that DD would never stop running in the hypothetical case that this HHH never aborted. > When discussing the situation we need not consider what happens > during the execution of HHH. We do know that HHH returns if it > really is a halt decider or any other decider. The fully operational code has shown 100% of all of the details of this for three years. The call from DD correctly emulated by HHH to HHH(DD) cannot possibly return. This makes the self-contradictory part of DD unreachable. > We also know that > if it returns it either returns zero or someting else. The code > of DD shows that it halts if HHH(DD) returns zero and does not > halt fi HHH(DD) returns non-zero or does not return at all. > DD cannot possibly *do the opposite of whatever value that HHH returns* because this code is unreachable from DD correctly emulated by HHH. -- Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer