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"Correlation Proves Causation"

This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.

State

Two factors varying together does not establish that either causes the other, because a third factor may drive both, or the causal arrow may point the other way.

Show

Ice cream sales and drownings rise together; heat raises both, and neither causes the other.

Watch for

This is the commonest misreading of social data, and the most confidently made.