"A multiform world," murmured the Doctor, recollecting the Clockwork man's description, "a world of many dimensions."

"Yes," echoed Gregg enthusiastically, "a multiform world. A world in which man moves as he will, grows as he will, behaves in every way exactly as he wills. A world set free! Think of what it means!"

"Stop," cried the Doctor, and there was almost anger in his features as he leapt to his feet. "It is you who are raving now. How can there exist such a world? And what plight has overtaken the human race, that it is now dependent upon mechanical contrivance for its actions! But, no. I refuse to believe that the Clockwork man represents the final destiny of man. He is a myth, a caricature, at the most a sort of experiment. This multiform world of which he talks so glibly is an extravagant boast. Besides, who would care to live in such a world, and with every action conditioned by an exact mechanism? Your optimism about this extraordinary affair amazes me even more than the thing itself. At the best what it means is that man has come to final ruin, not that he has achieved any real mastery of life. If all the creatures in the world eight thousand years hence are indeed clockwork men, then it is because some monstrous tyranny has come to birth in the race of man; it is because some diabolical plan has been evolved to make all men slaves. The clock may make man independent of time and space, but it obviously condemns him to an eternity of slavery. That is why I am still loath to believe in the evidence of my own eyes. That is why any explanation of this phenomenon is better than the obvious one!"

"But the proof," interjected Gregg, "you cannot escape from the facts. There lies the Clockwork man. Explain him otherwise if you can."

"I cannot," groaned the Doctor, his face hidden between his hands. And then he looked up quickly, and his eyes cleared. "Perhaps, after all, that is the consoling feature of the affair. If the Clockwork man were really capable of explanation, then indeed there would be an end to all sanity. But since he is inexplicable, there still remains the chance that we may be able to put all thought of him out of our minds. I tell you, Gregg, I can live this down, I can forget this night of horror; but not if there is an explanation to fit the case. Not if I can satisfy my reason!"

"As I remarked before," Gregg resumed, coolly, "you were not in a fit state to carry out the investigation. You could not bring yourself to accept even the obvious. Fortunately you remembered some of the most salient facts. Those tubes fitted into the clock, for example; I regard those as highly suggestive. Think of it, Allingham! The energy of generations compressed into a tube and so utilised by a single individual. For that is what must have happened in the year 8000. The scientists must have discovered means of gathering up and storing nervous energy. Everybody has this extra reserve of force. That solved one problem. Then there was the question of a better distribution. They had to invent a new nervous system. If we ever have an opportunity of examining the Clockwork man thoroughly, we shall find out what that system is. Speaking in rough terms, we may assume that it is probably an enlargement of the compass of what we call afferent and efferent impulses. There will also be new centres, both of reflex and voluntary action. Each impulse, in this new system, has a longer range of effectiveness, a greater duration in time."

Gregg paused abruptly, as though arriving at some crisis in his thought. "It must be so. There is no other explanation to cover what we have seen. Man, as we know him, is no more or less than what his nervous system allows him to be. A creature of action, his actions are nevertheless strictly prescribed by the limitations of his neural organism. In the case of the Clockwork man we are confronted by the phenomenon of an enormous extension of nervous activity. One imagines terrific waves of energy unimpeded—or, relatively unimpeded—by the inhibitory processes that check expenditure in the case of a normal organism. Of course, there must be inhibition of some sort, but the whole system of the Clockwork man is on so grand a scale that his actions take place in a different order of time. His relapses, as he describes them, are simply the parallel of that degeneration of tissue which accompanies ordinary human fatigue. That is why his ineptitude appears ghastly to us. Again, his perceptions would be different. He would see relatively far more of the universe, and his actions would carry him further and further into the future, far beyond those laws which we have fashioned for ourselves, in accordance with our neural limitations. For, just as man is at the mercy of his nervous system, so his conception of universal laws is the natural outcome of nervous apprehension; and the universe is no more or less than what we think it is."

In his growing excitement Gregg rose and paced the floor of the room, walking away from the Doctor. He did not hear the slight snigger that broke from the latter; nor had he observed any signs of deeper incredulity in the features of his friend that might have led him to moderate his enthusiasm. He continued, in an exultant voice. "Think of what this means! We know the future! The accidental appearance of the Clockwork man may save the human race generations of striving and effort in a wrong direction. Or rather, it will save us from passing through the intermediate stages consciously, for everything has already happened, and the utmost we can hope is to escape the knowledge of its happening. We shall be able to take a great leap forward into the future. Once we have grasped the principle of the Clockwork man, the course of humanity is clear. It may still be several thousands of years before the final achievement, but we can at least begin."

"NO," thundered the Doctor, suddenly leaping to his feet. "By heavens, no. Not that!"

Gregg swung round with a gesture of annoyance. Both men were now pitched to their highest key, and every word that was spoken seemed to be charged with terrific import.