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Subject: Re: IBM hired the wrong people because it won?

Author: KarinsDad

Date: 14:52:47 01/10/99

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On January 10, 1999 at 13:57:19, blass uri wrote:

[snip]

>
>I know that the loser is always losing by doing a mistake but the point is that
>kasparov did mistakes that he usually does not do.

How often does Kasparov make a mistake that nobody catches? Probably quite
often, but of very minor consequence. The reason is there are very few
individuals (and programs) that could analyze to the level that they would catch
something that Kasparov does not catch over the board.

Any minor mistake that Kasparov makes is fair game for a program as powerful as
Deep Blue to capitalize on. Even if only in an extremely minor manner.

>
>Resigning in a draw position is not a mistake that kasparov did in the past.

Except that Kasparov changed his tactics based on the fact that he was playing
Deep Blue. That worked in the first match, but failed in the second. Presumably,
the Deep Blue team learned something from the first match.

Humans make mistakes for different reasons than computers. Humans make mistakes
because they are tired, low blood sugar, emotional considerations,
mis-calculations, and not truly understanding the position. Computers only make
mistakes because their algoritms did not truly understand the position and all
of it's implications.

Kasparov lost because he thought he was lost and could not swindle the computer.
If he had been in that same position against another human, his thought
processes may have been different and he may have thought that he could have
played on. His mistake was not just in not seeing the draw, but rather also in
assuming that if he himself could not make a mistake in his analysis and that
the computer would not miss the win. He made a typical mistake that humans make
against computers. He thought that within a given position, the computer would
be infallible in winning.

>
>Going to a line that he was not ready to go to is not a mistake that humans
>usually do.

Humans do this all of the time, the instant they get out of their own book (or
at the GM level, when their opponent plays a theoretical novelty). If not at
move 5, at move 10, or at move 15, or whereever.

>
>I saw the games and I was not impressed by the level of deeper blue.
>I expected them to play better with their hardware.

Deep Blue did not have to play brilliantly. It did not have to come up with deep
complications or sacrifices. It just had to play solid chess and wait for
Kasparov to make a mistake. No matter how poorly you thought Deep Blue played,
it played well enough to win the match and I guess that's all that matters.

>
>Uri



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