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Path: ...!npeer.as286.net!npeer-ng0.as286.net!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: olcott <polcott333@gmail.com> Newsgroups: comp.theory Subject: Re: Who knows that DDD correctly simulated by HHH cannot possibly reach its own return instruction final state? Date: Sun, 4 Aug 2024 08:53:34 -0500 Organization: A noiseless patient Spider Lines: 46 Message-ID: <v8o14v$30uf$1@dont-email.me> References: <v8jh7m$30k55$1@dont-email.me> <v8kou4$3b2ta$1@dont-email.me> <v8lcir$3f6vr$4@dont-email.me> <v8ldcs$3fcgg$2@dont-email.me> <v8lem0$3ftpo$2@dont-email.me> <735401a612caec3eedb531311fd1e09b3d94521d@i2pn2.org> <v8lkdb$3h16a$1@dont-email.me> <5ee8b34a57f12b0630509183ffbd7c07804634b3@i2pn2.org> <v8ll4v$3h8m2$1@dont-email.me> <cbde765b8f9e769930b6c8589556907a41d9c256@i2pn2.org> <v8lm80$3h8m2$3@dont-email.me> <v8n6mq$3tv07$3@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sun, 04 Aug 2024 15:53:35 +0200 (CEST) Injection-Info: dont-email.me; posting-host="903796c801119a1f2fd86200a8e93bf1"; logging-data="99279"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/bTOoRZjF69qTwfJzBpgoA" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:hUTP9CSyN7hqDvucWIYInaR+iGo= In-Reply-To: <v8n6mq$3tv07$3@dont-email.me> Content-Language: en-US Bytes: 2957 On 8/4/2024 1:22 AM, Fred. Zwarts wrote: > Op 03.aug.2024 om 18:35 schreef olcott: >>>> ∞ instructions of DDD correctly emulated by HHH[∞] never >> reach their own "return" instruction final state. >> >> So you are saying that the infinite one does? >> > > Dreaming again of HHH that does not abort? Dreams are no substitute for > facts. > The HHH that aborts and halts, halts. A tautology. void DDD() { HHH(DDD); return; } That is the right answer to the wrong question. I am asking whether or not DDD emulated by HHH reaches its "return" instruction. > The correct simulation of a halting program halts. A truism. > HHH cannot possibly simulate itself correctly. > So by correctly you must mean that HHH incorrectly skips the call from DDD to HHH(DDD). > I am happy that you were not a member of our team when we developed > simulators to check the design of big detector systems. Crash dummy simulators? Not x86 emulators. > We knew that a simulation is only correct if it matches the reality. But > you seem to think that it is correct that a simulator does not match the > reality. The reality is that DDD does call HHH(DDD) in recursive simulation. When you ignore this then you are out-of-touch with reality. -- Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer