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Correlations don’t prove causation, but we can still learn from them

If you ever take a statistics course, one of the first things you will learn is that correlation does not imply causation. It is one of the main tenants of science and if you wonder why that is the case, just think through some examples like the perfect correlation between ice cream sales and shark attacks per month, or other great examples from the Spurious Correlations website. Simply put, just because two things coincide, doesn't mean that one caused the other and, even if there is a causal link, which direction it is heading.