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From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: The philosophy of computation reformulates existing ideas on a
 new basis ---x86 code is a liar?
Date: Fri, 8 Nov 2024 08:41:57 -0600
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On 11/8/2024 3:57 AM, joes wrote:
> Am Thu, 07 Nov 2024 15:56:31 -0600 schrieb olcott:
>> On 11/7/2024 3:24 PM, joes wrote:
>>> Am Thu, 07 Nov 2024 10:31:41 -0600 schrieb olcott:
>>>> On 11/7/2024 5:56 AM, Richard Damon wrote:
>>>>> On 11/6/24 11:39 PM, olcott wrote:
>>
>>>>>>>>>>>>>>>> That is not what the machine code of DDD that calls the
>>>>>>>>>>>>>>>> machine code of HHH says.
>>> The code by itself doesn’t say "do not return". That is a semantic
>>> property.
>> The code itself does say that within the semantics of the x86 language
>> as I have been saying all long hundreds of times.
> There is no "do not return" instruction.
> 
>>>>>>>>>>>>>>> Right, so that is part of the input, or it can't be
>>>>>>>>>>>>>>> emulated.
>>>>>>>>>>>>>>> The Machine code of HHH says that it will abort its
>>>>>>>>>>>>>>> emulation and return, so that is the only correct result
>>>>>>>>>>>>>>> per the x86 language.
>>>>>>>>>>>>>> Are you really so ignorant of these things that you think
>>>>>>>>>>>>>> that the fact that HHH returns to main() causes its emulated
>>>>>>>>>>>>>> DDD to reach its own final state?
>>> Yes, because DDD calls HHH.
>>>
>>>>>>>>>>>>> But the PROGRAM DDD, that it is emulating does. Just its own
>>>>>>>>>>>>> PARTIAL emulation of it is aborted before it gets there.
>>>>>>>>>>> Just repeating your errors, and not even trying to refute the
>>>>>>>>>>> errors pointed out, I guess that means you accept these as
>>>>>>>>>>> errors.
>>> There is only one program DDD, although it is invoked multiple times.
>>> We don’t care whether HHH actually simulates the return as long as it
>>> actually derives (not guesses) the right result.
>> DDD emulated by HHH does have different behavior than DDD emulated by
>> HHH1 or directly executed DDD.
>> DDD emulated by CANNOT POSSIBLY HALT no matter WTF HHH does: abort or
>> NEVER abort.
> When the instance of HHH that DDD calls aborts simulating, it returns
> to the simulated DDD, which then halts.
> 
>> There <is> a key distinguishing difference in the behavior of DDD
>> emulated by HHH and DDD emulated by HHH1 or directly executed. It is
>> ridiculously stupid to simply ignore this for three f-cking years.
> That difference is not due to DDD.
> 

The semantic property of the finite string pair: HHH/DDD
unequivocally entails that DDD never reaches its final halt state.

-- 
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer