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> we need to be careful of how we might apply superficial correlations like these

Well, for one, correlation != causation. Period.




Well, that's fine, but insurance companies are only interested in correlation. It's rather obvious that Hotmail addresses don't cause car accidents.


Yes, it is obvious, hence my comment. Using correlation as a stand-in for causation is stupid.


Why should an insurance company care about causation?


I never said insurance companies should care about it. Obviously some folks do care about it else this article would not be on the front page of HN, since the entire premise is "correlation may not be a good way to discriminate!!"


But does that mean that causation is a good way to discriminate or that the article is claiming anything like that?




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