In a book by a British statistician, Theo learned, for instance, that there are statistics showing that the number of children born each year is much greater in towns where there are storks than in towns where there aren’t many storks. “What does this prove? That storks deliver babies!” the statistician wrote sarcastically. Of course that isn’t the case; there are more storks in towns with a lot of chimneys, because that’s where they build their nests. A lot of chimneys means a lot of houses, which means more people, which means more babies. So Richard Theo has a picture of a stork on the wall
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