Presuming, then, that the movement or impelling force is the same in each instance, the question is: What is this force? In the great bulk of cases there can only be one answer to this question: unconscious muscular action. Whenever muscular contact is allowed, this may safely be assumed to be the explanation of the movements of the board--even if it shows an apparently independent will and movement of its own, and apparently drags the hands of the sitters with it. I have discussed this at some length in my _Physical Phenomena of Spiritualism_, pp. 66-72, and it is unnecessary to go into the question again here. Unconscious muscular action will account for so much that, even if it were not the true explanation of the facts, in reality, we should have to assume that it was. It will be observed that I have said "in the great bulk of cases." Some of my readers may object to this limitation, and say that it is the true and sufficient explanation of _all_ the cases, without exception. Personally I doubt that fact. There are numerous cases on record when the board has continued to write after the hands of all the sitters have been removed from it. Now, if there be operative a force which has been in some way generated during the sitting, it is quite possible, of course, that this same force may be operative in those cases where contact is allowed, only it is difficult to prove that fact.[47] Personally I have no difficulty in conceiving such a force or power, at least theoretically. This force may be the first glimmerings of the force whose more powerful manifestations we see in the movements of tables (witness Gasparin's experiments, e.g.), and ultimately in telekinetic phenomena, as, for example, in the Palladino case. This would seem to indicate that such forces and powers are possessed by every one in a limited degree, but that it is only in certain individuals that it becomes so marked and extraordinary that it produces the phenomena spoken of above. Granting, then, for the sake of argument, that the board is moved by the sitter, either consciously or unconsciously; by unconscious muscular action or by some "fluid" emanating from his fingers (and we must remember that even were a spirit using the writer's organism to manifest through, it must use the muscular and motor system), the great and vital question still remains: What is the intelligence behind the board that directs the phenomena? Who does the writing? What is the source of the information so often given?