Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: olcott Newsgroups: comp.theory Subject: Re: How the requirements that Professor Sipser agreed to are exactly met --- WDH Date: Wed, 14 May 2025 10:04:21 -0500 Organization: A noiseless patient Spider Lines: 55 Message-ID: <1002bdm$2i4bk$4@dont-email.me> References: <1000dlc$21dtc$5@dont-email.me> <56b6d1f535889a61c4b3ab9fbb49e40e921a461f@i2pn2.org> <1000eue$21dtc$7@dont-email.me> <1ef41beca220385304ac3499f8543dd65cc354fb@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Wed, 14 May 2025 17:04:22 +0200 (CEST) Injection-Info: dont-email.me; posting-host="1b4c815c0318038d25de37dcdc1ad225"; logging-data="2691444"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+i8AV2RpsdFmUVARpQygZ8" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:L18NaNMwBLV9yeqKCr0duPvGOiM= X-Antivirus-Status: Clean Content-Language: en-US In-Reply-To: <1ef41beca220385304ac3499f8543dd65cc354fb@i2pn2.org> X-Antivirus: Norton (VPS 250514-2, 5/14/2025), Outbound message On 5/14/2025 9:26 AM, joes wrote: > Am Tue, 13 May 2025 16:52:14 -0500 schrieb olcott: >> On 5/13/2025 4:39 PM, joes wrote: >>> Am Tue, 13 May 2025 16:30:20 -0500 schrieb olcott: >>>> On 5/13/2025 6:43 AM, Richard Damon wrote: >>>>> On 5/13/25 12:52 AM, olcott wrote: >>> >>>>>> It is truism that simulating termination analyzers must report on >>>>>> the behavior of their input as if they themselves never aborted this >>>>>> simulation: >>>>> >>>>> Right, of the input actually given to them, which must include all >>>>> their code, and that code is what is actually there, not created by >>>>> this imaginary operation. >>>>> >>>> In other words every single byte of HHH and DD are 100% totally >>>> identical except the hypothetical HHH has its abort code commented >>>> out. >>> ...the simulating HHH, but not the simulatED one. >>> >>>>> But you aren't simulating the same PROGRAM D that the original was >>>>> given. >>>>> >>>> It is not supposed to be the same program. *simulated D would never >>>> stop running* refers to a different HHH/DD pair >>> Uh yes it is supposed to be the same actual input. The *simulator* is >>> hypothetical. >>> >> HHH is supposed to report on the behavior that *would* happen if this >> HHH never aborted its input. > Right, if *this* simulator never aborted simulating *that* HHH that DDD > calls, which does abort. They are 100% completely different, except for > everything apart from the abort. HHH should report on what an UTM would > do with DDD calling the aborting HHH, namely halt. > 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 correctly simulates its input D* HHH simulates its input DDD according to the rules of the x86 language *until H correctly determines* This requires a partial simulation of non-terminating inputs. *its simulated D would never stop running unless aborted* DDD simulated by a hypothetical HHH that never aborts *would never stop running* -- Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer