Turing Machines have an infinite tape -- I'm glad you set us straight on
that.

-Tom

On 1/24/07, Don Dailey <[EMAIL PROTECTED]> wrote:

On Wed, 2007-01-24 at 21:11 +0100, alain Baeckeroot wrote:
> With 10^170 legal position for 19x19 what would be the size of this
> table ?
> I m afraid we cannot build it with all the matter in visible
> universe.

I think the computer science greats should have consulted you before
writing their textbooks - I just looked at this crazy thing called a
"turing machine" in one of my textbooks.

A universal turing machine supposedly has an infinite tape attached to
it.   Maybe they are smart about  computers, but they don't know
anything
about physics.   I think all these textbooks need to be thrown out
because they are obviously of no practical value.

- Don


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