Suggestion 6: Look for errors in distinguishing between correlation and causation. As you now know, it is dangerous to presume that one thing caused another just because they are correlated. In spite of this, you will see many claims based on questionable correlations. Here’s an example of mistaking correlation for causation: Jeanne Dixon, a well-known astrol-oger, once answered a group of prominent scientists—who had declared that there is no scientific foundation for astrology—by say-ing, “They would do well to check the records at their local police stations, where they will learn that the rate of violent crime rises and falls with lunar cycles.” Dixon, of course, believes that the moon affects human behavior.