On 19 Sep 2013, at 19:31, John Clark wrote:

On Thu, Sep 19, 2013 at 10:18 AM, Bruno Marchal <marc...@ulb.ac.be> wrote:

>> A computation is a process.

> I can agree with this, unless you meant a "physical process", OK.

As Rolf Landauer said "Computation is physical",

Yes, Landauer is a major proponents of that idea. If that is true, then computationalism is false.




all computations must use energy and generate heat. And what's the difference between a physical process and a non-physical process anyway?

With comp, a physical process is the result of the first person (plural) indeterminacy beaing on all computations. It involves Qubit, and can exploit Fourier transform on infinities of result in alternate computations. A non physical process would be defined by number relations involving only finite and local informations.

Bruno




  John K Clark


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