The godfather of the repression, Freud, wisely gave up using hypnosis in therapy. Unfortunately, however, hypnosis continues to be used in a wide variety of contexts, not all of which are beneficial. Using hypnosis to help people quit smoking or stick to a diet may be useful, and even if it fails it is probably not harmful. Using hypnosis to help people remember license plate numbers of cars used in crimes may be useful, and even if it fails it is probably not harmful. Using hypnosis to help victims or witnesses of crimes remember what happened may be useful, but it can also be dangerous because of the ease with which the subject can be manipulated by suggestions from the hypnotist. Overzealous police hypnotists may put conviction of those they think are guilty above honest conviction by honest evidence presented to a jury. Hypnosis is also dangerous in the police setting, because of the tendency of too many police officers to believe in truth serums, lie detectors, and other magical and easy ways to get to the truth.
Using hypnosis to help people recover memories of sexual abuse by their closest relatives or by aliens in spaceships is dangerous, and in some cases, clearly immoral and degrading. For, in some cases, hypnosis is used to encourage patients to remember and then believe events which probably never happened. If these memories were not of such horrible and painful events, they would be of little concern. But by nurturing delusions of evil suffered, therapists often do irreparable harm to those who put their trust in them. And they do this in the name of healing and caring, as did the priests of old when they hunted witches and exorcised demons.
