"Suggest to a subject while he is sound asleep that in eight weeks he will mail you a letter with a blank piece of note paper inside, and during the intervening period you may yourself forget the occurrence, but in exactly eight weeks he will carry out the suggestion. Hypnotic suggestions of this nature are always carried out, especially when the suggestion is to take effect on some certain day or date named. Suggest to a subject that in ninety days from a given date he will come to your house with his coat on inside out, and he will most certainly do so."
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