On Tue, Aug 14, 2012 at 1:29 PM, Quentin Anciaux <allco...@gmail.com> wrote:

> Hmmm... well the halting problem is that there is no *general* algorithm
> to decide wether or not a given program will stop


Yes.

> it doesn't state that there is no algorithm that can determine if a
> particular program will stop or not.
>

Obviously. It's easy to tell that some programs, like the program "add 1 to
the number 2  17 times then stop" will stop, but its not so easy for other
programs and the only way to know if the program will stop it to watch it
and see. And if the program never stops you can never know that because no
matter how many billions of years you've been watching it for all you know
it might stop in the next 5 seconds, or maybe the next 5 billion years, or
maybe never.

  John K Clark

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