Le 07-août-06, à 01:44, W. C. a écrit :

>> From: Bruno Marchal
>> ...
>> But it is easy to explain that this is already a "simple" consequence 
>>  of
>> comp. Any piece of "matter" is the result of a sum on an infinity of
>> interfering computations: there is no reason to expect this to be
>> "clonable" without cloning the whole UD, but this would not change any
>> internal measures (by Church thesis and machine independence).
>> ...
> I remember you said "comp can be tested experimentally due to others
> consequences (like the observable interference among many computations,
> etc.)".
> Can you provide more details on how to do the experiment to see 
> "matter" is
> the result of a sum on an infinity of  interfering computations???

Comp says that there is a level of description of yourself such that 
you survive through an emulation done at that level. But the UD will 
simulate not only that level but all level belows. So comp makes the 
following prediction: if you look at yourself or at you neighborhood 
sufficiently close enough, you can in principle detect, indirectly, (by 
computing the relative comp histories) the presence of all the sublevel 
So it is enough to observe closely your neighborhood. But of course 
experimental physicists does exactly that, and the fact that they infer 
Many-Worlds (many Histories/many computations) from their observations 
can be seen retrospectively as a confirmation of comp.
(This explains that up to now, only people with a good grasp of the 
conceptual difficulties of the quantum theory can swallow the 
consequences of comp, more or less).
To be sure "negative interferences" remains quite astonishing (after 
such an informal reasoning), but then if you take into account the 
results in computer science and mathematical logic, there are evidence 
that "negative interference" appears as related to some variant of the 
incompleteness phenomena. This is somehow counter-intuitive and hard to 
justify in "french". More in a summary which should come asap. I hope 
this already helps.



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