“A conclusion is the place where you got tired of thinking.” - Arthur Bloch People often make second-rate decisions when they assume there is a correlation, or connection, between something that has happened and what they believe is the cause. A correlation can show that two things have moved together, but it does not tell us why or whether one caused the other. Causality, on the other hand, means proving that one thing directly affects another, after ruling out other possible reasons.