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THREE:"I regard that statement of his as highly significant," resumed Gregg, after a slight pause. "For, of course, if the Clockwork man really is, as suggested, a semi-mechanical being, then he could only have come from the future. So far as I am aware, the present has not yet evolved sufficiently even to consider seriously the possibility of introducing mechanical reinforcements into the human body, although there has been tentative speculation on the subject. We are thousands of years away from such a proposition; on the other[Pg 54] hand, there is no reason why it should not have already happened outside of our limited knowledge of futurity. It has often occurred to me that the drift of scientific progress is slowly but surely leading us in the direction of some such solution of physiological difficulties. The human organism shows signs of breaking down under the strain of an increasingly complex civilisation. There may be a limit to our power of adaptability, and in that case humanity will have to decide whether it will alter its present mode of living or find instead some means of supplementing the normal functions of the body. Perhaps that has, as I suggest, already happened; it depends entirely upon which road humanity has taken. If the mechanical side of civilisation has developed at its present rate, I see no reason why the man of the future should not have found means to ensure his efficiency by mechanical means applied to his natural functions."