Placebo and expectation effects are examples of self-fulfilling prophecies-the concept that a certain idea produces behaviors that make the idea, even if originally false, become true.

安慰剂效应和预期效应都是自我实现预言的例证。这个概念是指某些想法引发的行为让想法成为现实，即便想法是假的。

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This above of all: to thine own self be true and it must follow, as the night the day, thou canst not thou be false to any man .

最为重要的，你必须忠实你自己，就像黑夜忠于白昼，对自己忠实就不会欺诈别人。

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By sending an email that repels all but the most gullible the scammer gets the most promising marks to self-select, and tilts the true to false positive ratio in his favor.

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