It is said that there is a correlation between the number of storks’ nests found on Danish houses and the number of children born in those houses. Could the old story about babies being delivered by storks really be true? No. Correlation is not causation. Storks do not deliver children but larger houses have more room both for children and for storks.
丹麦流传着一种说法，一户人家屋檐上的鹳巢数量与这家人所生孩子的数量存在着相关性。婴儿是鹳鸟送来的古老传说是真的吗？当然不是。相关性跟因果关系不是一回事。鹳不会送来孩子，但大房子有更大的空间为孩子和鹳所用。
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