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Well, in some cases you can, in some cases you can’t,<ref>There are whole websites devoted to spurious correlations. Like, well, http://www.spuriouscorrelations.com.</ref> but — irony upcoming — without a sophisticated theory of ''causality'', it will be hard to tell them apart. That is to say, a bare [[correlation]] won’t tell you whether there is a causal arrow at all much less, if there is one, which way it flows. | Well, in some cases you can, in some cases you can’t,<ref>There are whole websites devoted to spurious correlations. Like, well, http://www.spuriouscorrelations.com.</ref> but — irony upcoming — without a sophisticated theory of ''causality'', it will be hard to tell them apart. That is to say, a bare [[correlation]] won’t tell you whether there is a causal arrow at all much less, if there is one, which way it flows. | ||
“Correlation” is a synonym for ”coincidence”, though in its more fashionable usages among big data freaks this tends to be get somewhat, well, buried. | “Correlation” is a synonym for ”coincidence”, though in its more fashionable usages among [[big data]] freaks this tends to be get somewhat, well, buried in the [[noise]]. There may be something profound, reflexive and ironic about this, but it's too early in the morning to figure out out. The more data you have the, the more noise to the [[signal]]. | ||
===[[Correlation]] and [[causation]]=== | ===[[Correlation]] and [[causation]]=== | ||