Newton. So far, frankly, I've suppressed it. He died suddenly, just when his machine was completed and he was getting ready to publish his results. Nobody but I knew anything more than rumors; he was inclined to be secretive till he had a fait accompli on hand. I realized what an opportunity had been given me, and took it; I brought the machine here without saying much to anyone."

Kennedy leaned back in his chair. "I imagine it was mostly luck which took Gavotti and me so far," he went on. "We made a long series of improbably good guesses, and thus telescoped a century of work into a decade. If I were religious, I'd be down on my knees, thanking the Lord for putting this thing of the future into my hands."

"Or the devil," said Fraser.

Briefly, anger flitted across Kennedy's face. "I grant you, the machine is a terrible power, but it's harmless to a man if it's used properly—as I have used it. I'm not going to tell you just how it works; to be perfectly honest, I only understand a fraction of its theory and its circuits myself. But look, you know something of encephalography. The various basic rhythms of the brain have been measured. The standard method is already so sensitive that it can detect abnormalities like a developing tumor or a strong emotional disturbance, that will give trouble unless corrected. Half of Gavotti's machine is a still more delicate encephalograph. It can measure and analyze the minute variations in electrical pulses corresponding to the basic emotional states. It won't read thoughts, no; but once calibrated for a given individual, it will tell you if he's happy, sorrowful, angry, disgusted, afraid—any fundamental neuro-glandular condition, or any combination of them."

He paused. "All right," said Fraser. "What else does it do?"

"It does not make monsters," said Kennedy. "Look, the specific emotional reaction to a given stimulus is, in the normal individual, largely a matter of conditioned reflex, instilled by social environment or the accidental associations of his life.

"Anyone in decent health will experience fear in the presence of danger; desire in the presence of a sexual object, and so on. That's basic biology, and the machine can't change that. But most of our evaluations are learned. For instance, to an American the word 'mother' has powerful emotional connotations, while to a Samoan it means nothing very exciting. You had to develop a taste for liquor, tobacco, coffee—in fact most of what you consume. If you're in love with a particular woman, it's a focusing of the general sexual libido on her, brought about by the symbolizing part of your mind: she means something to you. There are cultures without romantic love, you know. And so on. All these specific, conditioned reactions can be changed."

"How?"

KENNEDY thought for a moment "The encephalographic part of the machine measures the exact pulsations in the individual corresponding to the various emotional reactions. It takes me about four hours to determine those with the necessary precision; then I have to make statistical analyses of the data, to winnow out random variations. Thereafter I put the subject in a state of light hypnosis—that's only to increase suggestibility, and make the process faster. As I pronounce the words and names I'm interested in, the machine feeds back the impulses corresponding to the emotions I want: a sharply-focused beam on the brain center concerned.

"For instance, suppose you were an alcoholic and I wanted to cure you. I'd put you in hypnosis and stand there whispering 'wine, whisky, beer, gin,' and so on; meanwhile, the machine would be feeding the impulses corresponding to your reactions of hate, fear, and disgust into your brain. You'd come out unchanged, except that your appetite for alcohol would be gone; you could, in fact, come out hating the stuff so much that you'd join the Prohibition Party—though, in actual practice, it would probably be enough just to give you a mild aversion."

"Mmmm—I see. Maybe." Fraser scowled. "And the—subject—doesn't remember what you've done?"

"Oh, no. It all takes place on the lower subconscious levels. A new set of conditioned neural pathways is opened, you see, and old ones are closed off. The brain does that by itself, through its normal symbolizing mechanism. All that happens is that the given symbol—such as liquor—becomes reflectively associated with the given emotional state, such as dislike."

Kennedy leaned forward with an air of urgency. "The end result is in no way different from ordinary means of persuasion. Propaganda does the same thing by sheer repetition. If you're courting a girl, you try to identify yourself in her mind with the things she desires, by appropriate behavior.... I'm sorry; I shouldn't have used that example.... The machine is only a direct, fast way of doing this, producing a more stable result."

"It's still—tampering," said Fraser. "How do you know you're not creating side-effects, doing irreparable long-range damage?"

"Oh, for Lord's sake!" exploded Kennedy. "Take your mind off that shelf, will you? I've told you how delicate the whole thing is. A few microwatts of power more or less, a frequency-shift of less than one percent, and it doesn't work at all. There's no effect whatsoever." He cooled off fast, adding reflectively: "On the given subject, that is. It might work on someone else. These pulsations are a highly individual matter; I have to calibrate every case separately."

There was a long period of silence. Then Fraser strained forward and said in an ugly voice:

"All right You've told me how you do it. Now tell me why. What possible reason or excuse, other than your own desire to play God? This thing could be the greatest psychiatric tool in history, and you're using it to—pimp!"

"I told you that was unimportant," said Kennedy quietly. "I'm doing much more. I set up in practice here in New York a couple of years ago. Once I had a few chance people under control—no, I tell you again, I didn't make robots of them. I merely associated myself, in their own minds, with the father-image. That's something I do to everyone who comes under the machine, just as a precaution if nothing else, Kennedy is all-wise, all-powerful; Kennedy can do no wrong. It isn't a conscious realization; to the waking mind, I am only a shrewd adviser and a damn swell fellow. But the subconscious mind knows otherwise. It wouldn't let my subjects act against me; it wouldn't even let them want to.

"Well, you see how it goes. I got those first few people to recommend me to certain selected friends, and these in turn recommended me to others. Not necessarily as a psychiatrist; I have variously been a doctor, a counsellor, or merely a research-man looking for data. But I'm building up a group of the people I want. People who'll back me up, who'll follow my advice—not with any knowledge of being dominated, but because the workings of their own subconscious minds will lead them inevitably to think that my advice is the only sound policy to follow and my requests are things any decent man must grant."

"Yeah," said Fraser. "I get it. Big businessmen. Labor-leaders. Politicians. Military men. And Soviet spies!"

KENNEDY nodded. "I have connections with the Soviets; their agents think I'm on their side. But it isn't treason, though I may help them out from time to time.

"That's why I have to do these services for my important clients, such as getting them the women they want—or, what I actually do more often, influencing their competitors and associates. You see, the subconscious mind knows I am all-powerful, but the conscious mind doesn't. It has to be satisfied by occasional proofs that I am invaluable; otherwise