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Path: ...!news.mixmin.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: DDD correctly emulated by HHH is correctly rejected as non-halting. Date: Wed, 10 Jul 2024 13:58:14 -0500 Organization: A noiseless patient Spider Lines: 33 Message-ID: <v6mlk6$21d9q$1@dont-email.me> References: <v6m7si$1uq86$2@dont-email.me> <v6mhc7$20hbo$2@dont-email.me> <v6mito$bbr$1@news.muc.de> <v6mjlg$20sio$2@dont-email.me> <v6mlfj$bbr$2@news.muc.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Wed, 10 Jul 2024 20:58:15 +0200 (CEST) Injection-Info: dont-email.me; posting-host="1ca7ba779153ded89a6e04f3275941c5"; logging-data="2143546"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19ayarOTMl9cv9O3t1CO7oo" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:1WUabpa9XMjsJM2Vwm/O4jPhqUE= Content-Language: en-US In-Reply-To: <v6mlfj$bbr$2@news.muc.de> Bytes: 2237 On 7/10/2024 1:55 PM, Alan Mackenzie wrote: > Fred. Zwarts <F.Zwarts@hetnet.nl> wrote: >> Op 10.jul.2024 om 20:12 schreef Alan Mackenzie: >>> [ Followup-To: set ] > >>> In comp.theory Fred. Zwarts <F.Zwarts@hetnet.nl> wrote: > >>> [ .... ] > >>>> Proving that the simulation is incorrect. Because a correct simulation >>>> would not abort a halting program halfway its simulation. > >>> Just for clarity, a correct simulation wouldn't abort a non-halting >>> program either, would it? Or have I misunderstood this correctness? > >>> [ .... ] > > >> A non-halting program cannot be simulated correctly in a finite time. >> So, it depends whether we can call it a correct simulation, when it does >> not abort. But, for some meaning of 'correct', indeed, a simulator >> should not abort a non-halting program either. > > OK, thanks! > In other words he is saying that when you do 1 step correctly you did 0 steps correctly. -- Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer