In science fiction and phantasy, authors often play with the idea of telekinesis, the ability of the mind to move objects at a distance. This reflects the idea that the mind is the most powerful part of the body. In one sense, this is true. In the long run intelligence always prevails over brute force. [...]
Over the centuries, it became obvious to those who tried to use some medication that if the patient believed strongly enough that the treatment would be effective, there was often an improvement. The mind is a powerful health resource when it comes to producing effective treatments. At the rise of mankind, shamen and witch doctors [...]

