From every city on Mars, via transmat, other rivers of worshippers were debouching into the valley. For a brief time they would gaze with trembling awe at the monstrous metal dome that ruled them inexorably, then return to their hopeless patterns. Via huge transmats on Terra and Venus, other rivers of worshippers numbering millions were flowing across the void. They, too, would gaze upon the Gray God's face, then return by transmat sender to their own worlds. Cadmus stared in sudden shocked fear. One abruptly obvious and terrible fact left him stunned. The great transmats on the right side of the valley were not disgorging any worshippers. Nothing was emerging from the Venusian transmats. * * * * * NO VENUSIANS WERE COMING TO WORSHIP THE GRAY GOD. * * * * * Bewildered, stunned, Cadmus ran through the panels into the vaulted height of the question submission chamber. He would worry about this other fearful emergency once he got the microtape installed. Across the chamber were panels containing many eyes of the photoelectric analyzers--lenses which must focus his microtape. Receptacles in front of the eyes waited for the microtape to be inserted. A red light indicated that none of the eyes were being used at that moment to analyze a problem for the Machine. A problem scanned by these eyes was carried into the Machine by electron beam tube. The Machine, a colossal mechanical brain, was the result of the final achievements of the finest scientific minds in the System. It could think. It could think, but its answers could never vary. The Gray God. Cadmus ran across the chamber, inserted the microtape on its spindle shaft and moved a small switch. The eyes glowed. The red light dimmed into green, signifying that the Machine was now handling a problem. Cadmus stumbled back toward the windows. There was no feeling of triumphant release for having fulfilled his destiny. Now that the problem Johlan had devised was submitted to the Machine's vast mechanical mind, the Machine was supposed to destroy itself. But the big problem now was why weren't those transmats bringing Venusians to worship the Gray God? Why should only streams of screaming psychopaths from Terra and Mars march out of transmats to their pathetic worship? What had Old Pirri said? "Beware of friends and patriots who are such only to achieve selfish ends. Remember history, and recall that when the Great Machine God was spawned and stopped all progress, wars were brewing between the worlds. Remember that was the reason the Machine was made--to halt progress and social evolution that might lead to another atom war. If the Machine is destroyed, remember that the old hates will return...." Cadmus shivered as he hesitated before the panels leading onto the balcony. The sun was higher now. The area about the valley was a sea of surging humanity marching out of transmat receivers.