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From: dbush <dbush.mobile@gmail.com>
Newsgroups: comp.theory
Subject: Re: DDD specifies recursive emulation to HHH and halting to HHH1
Date: Thu, 27 Mar 2025 21:09:10 -0400
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On 3/27/2025 9:07 PM, olcott wrote:
> On 3/27/2025 7:38 PM, dbush wrote:
>> On 3/27/2025 8:34 PM, olcott wrote:
>>> On 3/27/2025 7:12 PM, dbush wrote:
>>>> On 3/27/2025 8:11 PM, olcott wrote:
>>>>> On 3/27/2025 7:02 PM, dbush wrote:
>>>>>> On 3/27/2025 7:36 PM, olcott wrote:
>>>>>>> On 3/27/2025 1:27 PM, dbush wrote:
>>>>>>>> On 3/27/2025 1:50 PM, olcott wrote:
>>>>>>>>> On 3/27/2025 2:18 AM, Fred. Zwarts wrote:
>>>>>>>>>> Op 27.mrt.2025 om 04:09 schreef olcott:
>>>>>>>>>>> On 3/26/2025 8:22 PM, Richard Damon wrote:
>>>>>>>>>>>
>>>>>>>>>>> _DDD()
>>>>>>>>>>> [00002172] 55         push ebp      ; housekeeping
>>>>>>>>>>> [00002173] 8bec       mov  ebp,esp  ; housekeeping
>>>>>>>>>>> [00002175] 6872210000 push 00002172 ; push DDD
>>>>>>>>>>> [0000217a] e853f4ffff call 000015d2 ; call HHH(DDD)
>>>>>>>>>>> [0000217f] 83c404     add  esp,+04
>>>>>>>>>>> [00002182] 5d         pop  ebp
>>>>>>>>>>> [00002183] c3         ret
>>>>>>>>>>> Size in bytes:(0018) [00002183]
>>>>>>>>>>>
>>>>>>>>>>>> Non-Halting is that the machine won't reach its final staste 
>>>>>>>>>>>> even if an unbounded number of steps are emulated. Since HHH 
>>>>>>>>>>>> doesn't do that, it isn't showing non-halting.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> DDD emulated by any HHH will never reach its final state
>>>>>>>>>>> in an unbounded number of steps.
>>>>>>>>>>>
>>>>>>>>>>> DDD emulated by HHH1 reaches its final state in a finite
>>>>>>>>>>> number of steps.
>>>>>>>>>>>
>>>>>>>>>> It is not very interesting to know whether a simulator reports 
>>>>>>>>>> that it is unable to reach the end of the simulation of a 
>>>>>>>>>> program that halts in direct execution.
>>>>>>>>>
>>>>>>>>> That IS NOT what HHH is reporting.
>>>>>>>>> HHH correctly rejects DDD because DDD correctly
>>>>>>>>> emulated by HHH cannot possibly reach its own
>>>>>>>>> final halt state.
>>>>>>>>
>>>>>>>> In other words, HHH is not a halt decider because it is not 
>>>>>>>> computing the required mapping:
>>>>>>>>
>>>>>>>
>>>>>>> Troll
>>>>>>>
>>>>>>
>>>>>> On Monday, March 6, 2023 at 3:19:42 PM UTC-5, olcott wrote:
>>>>>>  > In other words you could find any error in my post so you 
>>>>>> resort to the
>>>>>>  > lame tactic of ad hominem personal attack.
>>>>>>
>>>>>
>>>>> Troll
>>>>>
>>>>
>>>> On 7/22/2024 10:51 AM, olcott wrote:
>>>>  > *Ad Hominem attacks are the first resort of clueless wonders*
>>>>
>>>
>>> I corrected your error dozens of times and you
>>> ignore these corrections and mindlessly repeat
>>> your error like a bot 
>>
>> Which is what you've been doing for the last three years.
>>
>> Projection, as always.  I'll add the above to the list.
>>
> 
> TM's cannot possibly ever report on the behavior
> of the direct execution of another TM. 

False:

int H(uintptr_t *p)
{
     return 1;
}

This one correctly reports on the behavior of all TMs that halt when 
execute directly.