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The first thing to be understood is that the mind is an indirect process. Senses are direct: I can touch you with my hand, but I cannot touch you with my mind. I can see you through my eyes, but I cannot see you through my mind. The mind is enclosed within me and there is no bridge from the mind to reach you directly. If the mind wants to reach you directly, some medium will be needed. If the mind wants to see you, it will see through the eyes. To touch you, it will touch through the hands. A medium, an agency, a mediator, will be needed. The mind needs a mediator.