On Mon, Jul 2, 2018 at 11:31 AM, Bruno Marchal <[email protected]> wrote:


> ​>​
> *The demonstration is given in those books. It is long and technical.*
>

​Nobody has ever seen a demonstration of a non-physical calculation in a
book and nobody ever will.

​>​
> *The book explains that computation is a purely arithmetical notion*


A explanation is not a demonstration, and they don't even explain what is
unique about their particular way of  manipulating numbers, but physics
can. Out of the infinite number of ways of manipulating numbers only one of
them is compatible with the laws of physics, and that way is called a
"calculation", all the other infinite ways of doing it is called a
"incorrect calculation".


> ​>​
> They do not mention physics at all.


​And that is why a book can not make a calculation and neither can pure
numbers.

​>>​
>> The fundamental problem is that in mathematical heaven incorrect
>> calculations are, not astronomically but INFINITELY, more common than
>> correct ones, and the ghost of Plato has no way of telling one from the
>> other, so its a good thing that matter can.
>
>
> *​>​Matter cannot do that either, or if it can, ask for the patent*
>

 I would except that Charles Babbage beat me to the patent office, by about
150 years.
​

  John K Clark​








> (and abandon computationalism).
>
>
>
>  John K Clark
>
>
>
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