"Now, there--you see how powerful the propaganda of the Prims can be?" Krayton put his hands on his hips. "That statement is not true! It simply isn't true at all! It was analyzed on The Computer some days ago. Here, let me show you." He took several steps down the corridor again and stopped at another panel. "We first collected from the various departments--Food, Production, Labor and so forth--all the _possible_ causes of the starvation deaths in Hydroburgh. Computer Administration had its machine translate them into symbols. We're getting a huge new plant and machine addition over at Administration, by the way. "At any rate, we simply registered all the possible causes with the Master Computer, threw in this circuit marked _Validity Selector_. Out of all those causes The Computer picked the one that was most valid. The Hydroburgh tragedy was due to lack of foresight on the part of Hydroburgh's planners. If they'd had a proper stockpile of basic carbon the thing never would have happened." "But no community ever stockpiles," said the little man. "That," said Krayton, "doesn't alter the fundamental fact. The Computer never lies." He drew himself up stiffly as he said this. Then abruptly he consulted the chronometer on the far wall. "Excuse me just a moment, Mr. Tanter," he said. "It's time to feed the daily tax computation from Finance. We have to start a little earlier on that these days--the new taxes, you know." As Krayton moved off Tanter's thin smile widened just a little. As soon as Krayton was out of sight he stepped with his odd, crow-like stride to the numerical panel, punched two-plus-two, then adjusted the Operations pointer to HOLD. After that he punched three-plus-one, and HOLD once more. He moved over to the _Validity Selector_, switched the numerical panel in, closed the circuit. In his dry voice he murmured to the whole control rack: "Three-plus-one makes four, two-plus-two makes four. Three-plus-one, two-plus-two--tell me which is really true." All through the master computer relays clicked and tubes glowed as the problem was sent to all the sub-computers in their own special terms. Food, Production, Labor, Public Information, War, Peace, Education, Science and so forth. All over Computer City the solenoids moved their contacts and the filaments turned cherry red. Oscillating circuits hummed silently to themselves in perfect Q. The life warmth of hysteresis pulsed and throbbed along wires and channels. _Three-plus-one, two-plus-two--tell me which is really true._ The problem criss-crossed in and out, around, about, checking, cross-checking, re-checking as The Computer 'thought' about the problem. Which was really true? Even before Krayton returned parts of The Computer had begun to get red hot. It hummed in some places and in the other places relays going back and forth in indecision made an unhealthy rattling noise.