When humans are trying to make contact with their dead they become vulnerable to exploitation. "Contact" cannot be proved but can be faked so clairvoyants can make money by offering something that people are so desperate to have that they will be unconsciously complicit in the deception. The need they feel reduces their critical engagement. Something similar happens with religion, people feel an urgent need to interact with God, to receive his approval and benefit from his blessing. To step between humanity and their creator and take a payment in the form of control, power, influence or actual cash under the pretence of being able to facilitate that relationship is a risk that could only be taken by a person who either does not believe in Gods existence or does not believe that He is actually what he claims to be, or what his worshippers believe Him to be. Religions that exploit their followers based on this contradictory dynamic cannot legitimately claim to represent the int...