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From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: DD emulated by HHH cannot possibly terminate normally --- x86
 code
Date: Sat, 1 Mar 2025 18:01:47 -0600
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On 3/1/2025 5:52 PM, dbush wrote:
> On 3/1/2025 6:47 PM, olcott wrote:
>> On 3/1/2025 2:22 AM, Mikko wrote:
>>> On 2025-03-01 00:47:58 +0000, olcott said:
>>>
>>>> _DD()
>>>> [00002133] 55         push ebp      ; housekeeping
>>>> [00002134] 8bec       mov ebp,esp   ; housekeeping
>>>> [00002136] 51         push ecx      ; make space for local
>>>> [00002137] 6833210000 push 00002133 ; push DD
>>>> [0000213c] e882f4ffff call 000015c3 ; call HHH(DD)
>>>> [00002141] 83c404     add esp,+04
>>>> [00002144] 8945fc     mov [ebp-04],eax
>>>> [00002147] 837dfc00   cmp dword [ebp-04],+00
>>>> [0000214b] 7402       jz 0000214f
>>>> [0000214d] ebfe       jmp 0000214d
>>>> [0000214f] 8b45fc     mov eax,[ebp-04]
>>>> [00002152] 8be5       mov esp,ebp
>>>> [00002154] 5d         pop ebp
>>>> [00002155] c3         ret
>>>> Size in bytes:(0035) [00002155]
>>>>
>>>> When we hypothesize that the code at machine address
>>>> 0000213c is an x86 emulator then we know that DD
>>>> remains stuck in recursive emulation and cannot possibly
>>>> reach its own "ret" instruction and terminate normally.
>>>
>>> The emulator itself is stuck and cannot return normally but it doesn't
>>> know it cannot return normally. At some point it runs out of memory
>>> and terminates normally or abnormally.
>>>
>>
>> Yes you are correct about this sub-step of two steps.
>>
>>>> When we add the additional complexity that HHH also
>>>> aborts this sequence at some point then every level
>>>> of recursive emulation immediately stops. This does
>>>> not enable any DD to ever reach its "ret" instruction.
>>>
>>> When we add an additional complexity we must note that there are other
>>> additional complexities that could be added instead.
>>>
>>
>> Sure we could carefully examine every detail about the price
>> of tea in China.
>>
>> When we are answering the question that seems impossible for
>> anyone here to pay attention to even when repeated hundreds of times:
>>
>> Can the above DD correctly emulated by HHH possibly
>> reach its own "ret" instruction and terminate normally?
>>
>> The answer is dead obviously "no" for everyone that is:
>> (a) Technically competent
>>    and
>> (b) Not deliberately deceptive.
> 
> And by the same logic, no_numbers_greater_than_10 correctly emulated by 
> F cannot reach its own "ret" instruction, leading to the conclusion that 
> there are no natural numbers greater than 10, and you are on record as 
> admitting this is correct.
> 

By this exact same reasoning the following function

void dbush_is-a-stupid_fool()
{
   return;
}

Proves that dbush is a stupid fool.

-- 
Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer