On 14 May 2013, at 11:01, Telmo Menezes wrote:
> On Tue, May 14, 2013 at 9:39 AM, Bruno Marchal <
mar...@ulb.ac.be>
> Yes, I agree with this.
>
> The distinction is useful to simply qualify something as being the
> product of human engineering (as in "Artificial Intelligence"). The
> search for ETs, interestingly, forces the distinction into an
> uncomfortable territory, because it's now "the product of some
> intelligence's engineering". We have no way of knowing the full
> spectrum of possibilities for alternative biologies, so we can never
> be sure if, for example, a signal we receive from outer space is
> "natural" or "artificial". Or can we?
The Belgian police got that message from the star (according to a test
they made to recruit policemen, 40 years ago!):
I send it to FOAR so that Liz can train her brain for the slow but
sure return to math :)
A, B, C, D, ... are conventional names for recognizable physical
signals in the message we got. Can you decode it? It is the inverse of
cryptography. The idea is that such a message can be understood by any
patient enough (Löbian) entity having a small amount of inference
ability.
Here is the message:
ABACAADABAACAAADAABAAACAAAAADAAAABACAAAAADAABAACAAAADAAABAACAAAAADAABACAAAD
AAAAABAAAAACAAAAAAAAAADEBACADAAAABECAAAADEBECEDAFAAACAAADAAFAAACAAAAAAD
Etc.
The original text was much longer. What do you think we should think
if ever we receive such a message from the sky?
It is not regular nor periodic, and it is highly redundant. From this
you can bet it is an interesting message, but it could still be
"natural", like the DNA code which is also non periodic and contains
redundancy. So you can bet already that it is the result of a deep
program (natural or artificial, alien?). Can you see the meaning of A,
B, C, D, E, F.
Can you find a natural sequel to that string? I get that message when
doing my first year on math study. Most student were able to decipher
it, and to prolongate it into a message capable of explaining the
location of the star from which the aliens have sent it in our galaxy,
and much more (I will not say as to not give the answer).
A hint: a student did not succeed, but admits it was rather simple,
when his little 10 years old brother decoded it. It is a problem whose
difficulty relies in its simplicity, for some people.
What would we reasonably conclude if we were really getting a message
like that?
We can argue if such a message defines a universal language or not.
Can such a message be "natural"? Here by "natural" I mean "not done by
a self-aware creature".
Bruno
>
> Telmo.
>
>> Bruno
>>
>>
>>
>>
>>
>>
>>>
>>> Evgenii
>>>
>>>> Telmo.
>>>>
>>>>> It might be this is a good chance to look from another perspective
>>>>> on an ASCII string that has no meaning for John Clark. Could we
>>>>> find the difference between natural and artificial if we say
>>>>> that a
>>>>> term "free will" is meaningless?
>>>>>
>>>>> Evgenii --
>>>>>
http://blog.rudnyi.ru/2013/03/natural-vs-artificial.html
>>>>>
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