1. The spirit who acts as a kind of manager through which other spirits communicate to the medium during a séance.
2. In science (and in the scientific investigation of the paranormal—parapsychology), experimental proceedures instituted to prevent extraneous factors from influencing the results of an experiment.
Josephine Ellershaw is well known for her approach to tarot. In Easy Tarot, she helped tens of thousands of beginners learn to read the cards. In Easy Tarot Reading, she helped readers of all levels up their game and give better readings. Now,...