LizR wrote:
On 29 April 2015 at 05:35, John Clark <johnkcl...@gmail.com
<mailto:johnkcl...@gmail.com>> wrote:
On 28 Apr 2015, , Bruce Kellett wrote:
> I must admit that I do not know what a computation that
does not utilize a computing machine (physical) is. Show me
one, and indicate how it works.
On Tue, Apr 28, 2015 Bruno Marchal <marc...@ulb.ac.be
<mailto:marc...@ulb.ac.be>> wrote:
> This is explained in all textbook in computability theory.
Hmm, I don't totally understand how this works but apparently there
are so many examples of ways computations can be performed without
using physical processes that Bruno is unable to give even one of
those examples.
> It is the kind of "well known fact" that I have been asked to
not explain in my thesis, as it is known by undergraduate student
I confess I did not know that "well known fact" and neither did
anybody in Silicon Valley. What a shame companies like INTEL IBM
and Apple have wasted trillions of dollars in building hardware when
if they had just asked any undergraduate student they could have
told them how to make a computer without using any matter or energy
or momentum or spin or electrical charge or anything else that is
physical. Bruno you really need to start your own company, you'll be
able to sell Bruno brand computers far cheaper than your competition
that still makes them out of old fashioned matter and still make a
big profit. Unlike those other companies you don't have to build
your computers in China, in fact you don't have to build them at
all, so your manufacturing costs would be zero! And think of the
convenience of a smartphone that isn't just thin but takes up no
space at all in your pocket. I predict that just 6 months after your
new company's IPO you'll be the world's first trillionaire.
So because Bruno considers that 2+2=4 is true everywhere, at all times,
in all universes,
Given the definitions of '2', '4', '+', and '=', '2+2=4' is a tautology.
Everywhere and any time you define these things the same way, the same
result is obtained. So just where is the calculation?
you think Bruno is saying that someone could build a
physical calculator that doesn't use energy?
No. But he seems to think that he can have a non-physical calculator.
Bruce
Would you like to run that logic by me again, or are you being
deliberately obtuse for rhetorical effect?
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