Aleister Crowley - famous occultist, magician, Tarotologist. A man with a sophisticated sense of humor. Some consider him a genius and mystic, others think that he's a quack. However, everyone accept his occult writings. He had a secret room where the visions came to him, discovered the secret knowledges and got answers to all questions.
It based on numerology. This magical teachings based on the relationship between words, things and numbers. So it is important to fortune-teller as precisely formulated the question and no mistakes in the question. The room can answer any Yes/No question.