When someone who only plays well some of the time plays well, her team fares better. Truly a fascinating insight.
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Besides that the basic rules of logic tell us that correlation does not imply causation.
As to your first point, it is especially fascinating when it is relevant to a player who is important to those of us who follow UConn women's basketball. But your counterpoint would be more persuasive if you found evidence that it was just any player on the Liberty who has such a strong correlation between their offensive output and the team's end result. You might even prove you are right.
As to your second point regarding the rules of logic, many sciences rely on correlation to give indications of what the truth of a matter is. Causation cannot always be proven. It is a fallacy to think that all good thinking must determine causation. In many investigations, correlation must suffice. If coaches were to base their decisions on nothing but what is proven beyond a shadow of a doubt, they wouldn't get much done. If fans were only to rely on what is proven beyond a shadow of a doubt, what fun would that be?