On 31 Jan 2014, at 22:58, Craig Weinberg wrote:
On Friday, January 31, 2014 4:16:12 PM UTC-5, Liz R wrote:
On 1 February 2014 09:39, Craig Weinberg <[email protected]> wrote:
> Is there any instance in which a computation is employed in which no
> program or data is input and from which no data is expected as
output?
The UD.
Isn't everything output from the UD?
No, as I understand it, only the appearance of everything. (Comp
answers the question "why is there something rather than nothing" by
"it depends what you mean by something...")
Ok, so then everything is output from the UD plus output from
whatever computater you are saying generates everything that is not
an appearance.
It is misleading to say that the UD output anything, as it is a non
stopping program. It has no output in the common computer science
meaning.
Think about a dreaming brain. Your partner in bed is sleepy and make a
dream. there are no input output, but there is still an experience
which can be related to the brain activity. In that dreams, some
entities can have inputs and outputs.
Input and outputs are relative notions. Then a machine without inoput
and output can imitate machines having them.
How does the program itself get to be a program without being input?
See genetic algorithms for one example. See genetics for another. A
"blind watchmaker" can make a computer programme, although we can
normally write one a lot more efficiently.
Genetics are absorbing all kinds of inputs and producing outputs.
The blind watchmaker is a theory about evolution, not an example of
a real computation which is known to be without input or output.
It seems to me though, and this is why I posted this thread, that i/
o is taken for granted and has no real explanation of what it is in
mathematical terms.
No mathematical explanation for what input and output are?! They
both come down to binary digits, how mathematical do you want it to
be?
What are the binary digits which define "input"?
Look up any assembly language.
Bruno
The rest of your post seems a lot more sensible and I will leave
those questions for Bruno to agree or disagree, I would also like to
know how numbers can make an effort (as would Xenocrates! If John
will forgive the reference...)
Cool.
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