Sujet : Ben thinks processor Sipser is wrong
De : polcott333 (at) *nospam* gmail.com (olcott)
Groupes : comp.theory sci.logicDate : 04. Jul 2024, 19:02:22
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v66o3e$2rv8q$2@dont-email.me>
References : 1 2
User-Agent : Mozilla Thunderbird
<MIT Professor Sipser agreed to ONLY these verbatim words 10/13/2022>
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 can abort its simulation of D and correctly report that D
specifies a non-halting sequence of configurations.
</MIT Professor Sipser agreed to ONLY these verbatim words 10/13/2022>
On 10/14/2022 7:44 PM, Ben Bacarisse wrote:
I don't think that is the shell game. PO really /has/ an H (it's
trivial to do for this one case) that correctly determines that P(P)
*would* never stop running *unless* aborted.
...
But H determines (correctly) that D would not halt if it were not
halted. That much is a truism.
Ben clearly agrees that the above criteria have been met,
yet feels that professor Sipser was tricked into agreeing
that this means that:
H can abort its simulation of D and correctly report that D
specifies a non-halting sequence of configurations.
I spent two years deriving those words that Professor Sipser
agreed with. It seems to me that every software engineer would
agree that the second part is logically entailed by the first part.
-- Copyright 2024 Olcott "Talent hits a target no one else can hit; Geniushits a target no one else can see." Arthur Schopenhauer