Thanks fo your clarification Anna. We will have the opportunity to
come back on some nuances later. I basically agree with your solution,
but I would have to explain the entire MGA + a part of its
arithmetical translation to be completely accurate commenting your, a
bit to prematurely technical, solution. Hope you will not mind,

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Bruno
On 20 Nov 2008, at 00:21, A. Wolf wrote:
>
>>> No. The tape isn't a standard Turing tape because it's
>>> infinitely long. :)
>>
>> ?
>
> You're presuming the Universe contains finite data. Most cosmological
> evidence suggests that the Universe is flat and unbounded, which
> implies it
> would be infinite in size. If space is not quantized (which would be
> difficult to handle mathematically, anyway), then there's an
> infinite amount
> of information even in a finite universe.
>
>> He could dovetail. (The standard way to emulate parallelism in a
>> linear way).
>
> Of course. But this still only works on finite data.
>
> I think you're confusing "can emulate with a Turing machine" with "is
> computable". Everything that is computable /in finite time and
> space/ can
> be emulated on a Turing machine (if the Church-Turing thesis is
> true). But
> infinite data sets cannot be handled directly on a Turing machine.
> There's
> no model for handling infinite data, that I know of anyway.
>
> Anna
>
>
> >
http://iridia.ulb.ac.be/~marchal/
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