I love to tell a story about Milton Erickson. He once attended a hypnotic stage-show where the hypnotist was abusive to the subject, she refused to come out of her trance, to defy his instruction. Milton was asked to intervein. He went on-stage and whispered in her ear, turned away and returned to his seat and sat down. After another few minutes, she miraculsly got up and walked off the stage, ignoring the hypnotist near her on-stage. Milton was later asked what he whispered in her ear. He simply asked her "when did you last use the toilet?" How powerful is the simple offer of a suggestion?