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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Richard Heathfield <rjh@cpax.org.uk> Newsgroups: comp.theory Subject: Re: Formal systems that cannot possibly be incomplete except for unknowns and unknowable Date: Wed, 7 May 2025 22:52:47 +0100 Organization: Fix this later Lines: 24 Message-ID: <vvgknf$18i5r$1@dont-email.me> References: <vv97ft$3fg66$1@dont-email.me> <b47c9e70d415c1e5e469aaab846f0bd05e4bcc51@i2pn2.org> <vvall0$o6v5$1@dont-email.me> <vvc33h$25atc$1@dont-email.me> <vvcgja$1voc$1@news.muc.de> <vvd6pf$34l9k$1@dont-email.me> <vvdads$13pc$1@news.muc.de> <vvdcld$3arjo$1@dont-email.me> <vvg6r9$15e69$1@dont-email.me> <vvg7uu$158tp$4@dont-email.me> <vvg8tk$15e69$4@dont-email.me> <vvgai8$158tp$6@dont-email.me> <vvgcme$15e69$9@dont-email.me> <vvgjdo$18i6e$2@dont-email.me> <vvgkao$18q46$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 23:52:47 +0200 (CEST) Injection-Info: dont-email.me; posting-host="1de3d45e2783553e22f3c2216cb20b34"; logging-data="1329339"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+wgs0LaSFU2X2watzigTy1V09GXo1cGrGscDPX6CrESQ==" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:0iAQ+wDpD+QiIp7dq692R+K9uUw= In-Reply-To: <vvgkao$18q46$1@dont-email.me> Content-Language: en-GB Bytes: 2184 On 07/05/2025 22:46, olcott wrote: > On 5/7/2025 4:30 PM, Richard Heathfield wrote: <snip> >> If the simulation can't reach code that the directly executed >> program reaches, then it's not a faithful simulation. >> > > If is was true that it is not a faithful simulation > then you would be able to show exactly what sequence > of instructions would be a faithful simulation. If it were false, you'd be able to chop out the unreachable code without any adverse effects. Can you? <snip> -- Richard Heathfield Email: rjh at cpax dot org dot uk "Usenet is a strange place" - dmr 29 July 1999 Sig line 4 vacant - apply within