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: olcott Newsgroups: comp.theory Subject: Re: DD correctly emulated by HHH --- Totally ignoring invalid rebuttals ---PSR--- Date: Sat, 8 Mar 2025 10:29:26 -0600 Organization: A noiseless patient Spider Lines: 32 Message-ID: References: <2002d599ebdfb7cd5a023881ab2faca9801b219d@i2pn2.org> <4426787ad065bfd0939e10b937f3b8b2798d0578@i2pn2.org> <920b573567d204a5c792425b09097d79ee098fa5@i2pn2.org> <4453bc0c1141c540852ea2223a7fedefc93f564c@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Sat, 08 Mar 2025 17:29:27 +0100 (CET) Injection-Info: dont-email.me; posting-host="ffa3f7c8a9c06536bf515dd54724b6f7"; logging-data="228780"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19oB5EJlxwdOjQbSWS0k/F+" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:L4qmbmZeoVLPmPQ7gTKcZOLuHwI= X-Antivirus: Norton (VPS 250308-2, 3/8/2025), Outbound message In-Reply-To: X-Antivirus-Status: Clean Content-Language: en-US Bytes: 3408 On 3/8/2025 9:00 AM, dbush wrote: > On 3/8/2025 9:03 AM, olcott wrote: >> On 3/8/2025 2:47 AM, Fred. Zwarts wrote: >>> >>> So, we agree that any simulator that tries to simulate *itself* >>> cannot possibly reach the end of its simulation. >> >> Apparently you don't understand that inputs to a >> simulating termination analyzer specifying infinite >> recursion or recursive emulation cannot possibly >> reach their own final state and terminate normally. > > Apparently you don't understand that inputs to a termination analyzer, > simulating or otherwise, are specified by the specification that is the > halting function: > > (,Y) maps to 1 if and only if X(Y) halts when executed directly > (,Y) maps to 0 if and only if X(Y) does not halt when executed > > And HHH(DD)==0 fails to meet the above specification Until you understand how and why this is necessary correct strongly held misconceptions will persist: DD correctly emulated by HHH cannot possibly reach its own "ret" instruction and terminate normally because DD calls HHH(DD) in recursive emulation. -- Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer