The expert cryptanalyst and the Sunday-puzzle expert alike rely on the fact that letters have their own personalities. As David Kahn writes: "To the casual observer, they may look as alike as troops lined up for inspection, but just as the sergeant knows his men as 'the gold-brick,' 'the kid,' 'the reliable soldier,' so the cryptanalyst knows the letters of the alphabet."
Consider this simple cryptogram:
GJXXN GGOTZ NUCOT WMOHY JTKTA MTXOB YNFGO GINUG JFNZV QHYNG NEAJF HYOTW GOTHY...
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