On Wed, Feb 6, 2013 at 5:01 PM, Bruno Marchal <[email protected]> wrote:

>
> On 06 Feb 2013, at 12:19, Telmo Menezes wrote:
>
>
>
>
> On Tue, Feb 5, 2013 at 6:17 PM, Bruno Marchal <[email protected]> wrote:
>
>>
>> On 05 Feb 2013, at 14:14, Roger Clough wrote:
>>
>>  Hi Bruno,
>>
>> The definitons of simulation and emulation I can find both use the word
>> "imitation".
>> Can you explain what you mean as being the difference between the two ?
>>
>>
>> A computer can simulate a storm. It can also simulate another computer.
>> In this case, when we simulate digital events by a digital machine, we can
>> define a notion of totally faithful simulation. This what is called an
>> emulation. Some mac, for example,  emulate some PC.
>> In fact any universal machine can emulate all possible digital machinery.
>> This is why they are said universal.
>>
>
> I would argue that "totally faithful simulation" is not enough. Simulation
> implies a simulated environment, while emulation has to work in the
> emulated thing's environment. This is trivial for a mac emulating a PC. It
> already has a keyboard, a display and a mouse. If you want to emulate fire,
> it actually has to be able to burn you. Or emulating a complete human being
> would require a robot.
>
>
> This is not the standard definition in computer science. It has nothing to
> so with emulating the environment (the data) or not.
>

Bruno,

For what it's worth, wikipedia agrees with me:

"In computing <http://en.wikipedia.org/wiki/Computing>, an *emulator* is
hardware or software or both that duplicates (or *emulates*) the functions
of a first computer system (the *guest*) in a different second computer
system (the *host*), so that the emulated behavior closely resembles the
behavior of the real system. This focus on exact reproduction of behavior
is in contrast to some other forms of computer
simulation<http://en.wikipedia.org/wiki/Computer_simulation>,
in which an abstract model of a system is being simulated. For example, a
computer simulation of a hurricane or a chemical reaction is not emulation."

http://en.wikipedia.org/wiki/Emulator



> It just means that there is an exact simulation. The intensional Church
> thesis (which is a simple consequence of the usual Church's thesis) makes
> all programs emulable by all universal programs. With a mac, you can
> emiulate a PC, but you can also emulate a complete PC with the keyboard,
> and if comp is correct you can emulate the PC, its keyboard, and the user.
> You can emulate fire on a MAC, and it can burn anyone emulated on that mac
> and interacting with the emulated fire (again assuming comp). The correct
> level of comp is defined by the one which make yourself being emulated by
> the artificial brain or body, or local universe.
>

Ok, I agree with what you say here. You can turn a very good simulation
into an emulation (for me) iff you emulate my mind inside the simulation.


>
> Bruno
>
>
>
>
>
>
>
>>
>> Bruno
>>
>>
>>
>>
>>
>>  *Simulation* - *Definition* and More from the Free Merriam-Webster 
>> *...*<http://www.merriam-webster.com/dictionary/simulation>
>> www.merriam-webster.com/dictionary/*simulation*
>> a : the *imitative *representation of the functioning of one system or
>> process by means of the functioning of another <a computer *simulation*of an 
>> industrial process>
>> *...*
>> **
>>  Definition of *EMULATION*
>>  1
>> *obsolete* *:* ambitious or envious rivalry
>>  2
>> *:* ambition or endeavor to equal or excel others (as in achievement)
>>  3
>> *a* *:* *imitation* <http://www.merriam-webster.com/dictionary/imitation>
>> *b* *:* the use of or technique of using an 
>> emulator<http://www.merriam-webster.com/dictionary/emulator>
>> — *em·u·la·tive* *adjective*
>> — *em·u·la·tive·ly* *adverb*
>>
>>
>>
>>  ----- Receiving the following content -----
>> *From:* Telmo Menezes <[email protected]>
>> *Receiver:* everything-list <[email protected]>
>>  *Time:* 2013-02-04, 17:07:32
>> *Subject:* Re: context, comp, and multiverses
>>
>>
>>
>>
>> On Mon, Feb 4, 2013 at 6:05 PM, Craig Weinberg <[email protected]>wrote:
>>
>>>
>>>
>>> On Monday, February 4, 2013 9:59:09 AM UTC-5, telmo_menezes wrote:
>>>
>>>>
>>>>
>>>>
>>>> On Mon, Feb 4, 2013 at 2:31 PM, Craig Weinberg <[email protected]>wrote:
>>>>
>>>>>
>>>>>
>>>>> On Sunday, February 3, 2013 12:11:17 PM UTC-5, Bruno Marchal wrote:
>>>>>>
>>>>>>
>>>>>>  On 01 Feb 2013, at 16:42, Roger Clough wrote:
>>>>>>
>>>>>>  Hi Bruno Marchal
>>>>>> �
>>>>>> I would think that each universe provides its own distinctive
>>>>>> context to any燾alculation, including comp.
>>>>>>
>>>>>>
>>>>>> Comp is the assumption that we are Turing emulable.
>>>>>> That notion is made very solid by Church's thesis.
>>>>>>
>>>>>>
>>>>> I don't think that we can assume that a Turing emulation of us is
>>>>> actually "us". To the contrary, a Turing emulation of geometry is not
>>>>> geometry. A Turing emulation of water can be the same as a Turing 
>>>>> emulation
>>>>> of water in another Turing emulated virtual world, but no emulated drop of
>>>>> Turing water can ever be a genuine drop of water within the world that we
>>>>> actually live in. It doesn't matter that 17 is still prime when you are
>>>>> dying of dehydration.
>>>>>
>>>>
>>>> Hi Craig,
>>>>
>>>> Still trying to understand your theory better. What's your position on
>>>> the following statements:
>>>>
>>>> - The human brain can be Turing emulated.
>>>>
>>>
>>> I see emulation is a figure of speech rather than a physical reality.
>>> Can fire be Turing emulated? Maybe, but you can only use it to emulate the
>>> cooking of emulated food. I can make a single emulation of fire which will
>>> work for any number of virtual worlds, but none of them can actualize fire
>>> on the level of the machine itself.
>>>
>>
>> Aren't you confusing emulation with simulation? If we emulate a brain in
>> a computer, we can connect its input and outputs to sensors and actuators
>> in the real world.
>> �
>>
>>>
>>> So can publicly detectable brain activity be Turing emulated? Sure, but
>>> it is a sculpture.
>>>
>>
>> I see what you mean, but more on that later.
>> �
>>
>>>
>>>
>>>> - There is some (possibly mysterious) link between the physical human
>>>> brain and consciousness.
>>>>
>>>>
>>> The human brain is the public facing spatial presentation of human
>>> quality awareness. It's not a link between them because they are actually
>>> the same thing, only expressed publicly rather than privately.
>>>
>>
>> Ok. I'm ok with that. I would still call it a link, but no nitpicking is
>> necessary.
>> �
>>
>>>
>>> It's a bit confusing since private awareness is longitudinal through all
>>> time whereas public structures are orthogonal - latitudinal across all
>>> space but constrained to as single instant of time.
>>>
>>> See if my post from last night makes it clearer:
>>> http://multisenserealism.com/2013/02/04/chalmeroff-scale-revisited/
>>>
>>
>> Interesting post.
>>
>> You say:�
>> "In other words, an experience is ineffable when the subject derives
>> meaning from generated information which supervenes on an extensive
>> personal history."
>> �
>> So my question is, why can't the generated information supervene on an
>> emulation of my brain?
>>
>>
>>>
>>> Craig
>>>
>>>>
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