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Subject: Re: I plan to settle this.

Author: Robert Hyatt

Date: 11:13:28 06/13/01

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On June 13, 2001 at 11:49:04, Mark Young wrote:

>On June 13, 2001 at 06:30:04, José Carlos wrote:
>
>>On June 13, 2001 at 03:42:41, Bruce Moreland wrote:
>>
>>>On June 12, 2001 at 23:56:26, Terry McCracken wrote:
>>>
>>>>Many IM's and GM's have felt the teeth of these and many other programs like
>>>>Fritz, Junior, Tiger etc.
>>>>
>>>>However, it's true they lose to much lower rated players, even to me
>>>>sometimes!;)
>>>
>>>Humans have a hard time coping with this.
>>>
>>>A human who plays chess is an apple.  A computer that plays chess is not an
>>>orange, but it's not quite an apple, either.  You can compare them, but not
>>>perfectly.
>>>
>>>A ludicrous example:  Compare an unarmed human with a tank.  A tank can blow up
>>>a house at a range of over a kilometer, and can survive machine gun fire,
>>>whereas an unarmed human cannot blow up a house at a range of even one meter,
>>>and would fare badly against machine gun bullets.
>>>
>>>On the other hand, there are ditches that a tank cannot get out of, while a
>>>human might have an easy time with these ditches.
>>>
>>>You can't deny the tank its strengths just because there's a ditch a human can
>>>handle better.
>>>
>>>End of ludicrous example.  Computers are getting better at being uniformly
>>>strong, but they are not now, and will probably never be, perfect human analogs.
>>> There will always be the possibility that a weak human player can say "duh" to
>>>one of these machines -- sometimes.
>>>
>>>bruce
>>
>>  Everytime this kind of argument arises, I have the same impression: There's a
>>problem of definition. What do we call 'GM strength'?
>>
>>  A. If we speak of 'quality' of chess (whatever this can mean), most chess
>>players will probably agree to one of these possibilities:
>>     A.1. Computers are not GM strength because they show lack of understanding
>>too many times to be considered GM's.
>>     A.2. Computers and humans do not compare (like the soldier and the tank).
>>
>>  B. If we speak of 'quantities' (namely ELO rating), we can certainly compare
>>humans and programs, and say _with numbers_ if programs perform like GM's or
>>not.
>>
>>  So, as long as we don't specify the definition of 'GM strengh', there will be
>>discussions comparing apples with oranges.
>
>There can be no other definition then ELO.
>
>We don?t consider GM Kasparov or GM Fischer the strongest grandmaster because of
>the beautiful games they produced, even though they produced many, but so has
>many other grandmasters. We consider them the best because of the Elo ratings
>they generated, meaning wins, losses, and draws.
>
>There is on other measure in chess. You don?t get points for beauty, only for
>wins and draws.
>
>

I disagree there.  I don't pay a lot of attention to Elo at all.  I recall
Fischer's _games_ and tournament victories... not his rating at the time he
was playing.  He was the best of the 1970's because he won the WC title, not
because he had a big Elo.  He could have been rated 2500 and he would have
_still_ been the 1972 WC...

Elo ratings do _not_ tell you exactly who is the strongest player around, until
we see the time where _everybody_ plays everybody an equal number of times.
Human vs human chess is not a transitive relationship.  Elo is just a
statistical approximation based on expected game outcome between two opponents
in a rating pool. It does not guarantee a winner.  Comparing a 1972 Elo to a
1992 (or 2002) Elo is pointless.  The rating pools change.

Too many take this as an absolutely perfect statement of fact.  It is just a
way of predicting heads or tails more accurately since there are more than two
opponents anyone can play.



>>
>>  José C.



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