On Wed, Jun 3, 2015  Bruno Marchal <[email protected]> wrote:

>> You've got it backward, the algorithm imperfectly instantiates the
>> device; the device has something very important that the algorithm lacks,
>> matter that obeys the laws of physics.
>
>
> > You got it backward. It is the physical device which approximate the
> mathematical algorithm


A real physical device is much more complex, that is to say has many more
attributes, than any of our algorithms. So if you
have a simple thing and a complex thing you tell me which is making a
simplified approximation of which.

 John K Clark

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