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by TeMPOraL 2441 days ago
It's not that people think correlation implies causation, as much as in many practical models, it's correlations you care about, not causation.

If I'm running an insurance agency and not a public policy advocacy, and my data keeps showing that men have higher accident rate than women, I can just ignore causation and build my actuarial tables based on that. I don't need a casual model here, at least not until the point I'd want to optimize my models further still, but there are diminishing returns on that.

1 comments

This makes no sense to me. Everything depends on your causal model. You can't just not have one; if you don't have one, you are treating correlations as causative indiscriminately.

Suppose (just as a toy example) that being young causes accidents, and the population of men is younger, but being male does not cause accidents. You are going to charge mature men too much and lose that business to a competitor with a correct causal model.

This is quite separate from the correlational data.

The insight I get from the article is that the "correctness" of your causal model can incorporate social justice or political correctness, without being objectively mistaken, because causation is not defined by measured correlations.