What do people mean when they say (as when cautioning against the validity of a

What do people mean when they say (as when cautioning against the validity of a

What do people mean when they say (as when cautioning against the validity of a scientific study, for example) that "correlation does not imply causation"? Isn't causation just perfect correlation? And if so, doesn't that mean that the caveat in question does not concern causal claims per se, but inductive claims more generally?

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