the iris; b) increase in frequency and strength of heart contractions....' That's more like it, eh?" "It's more like it, but how much more? It doesn't occur to you that if biology had made giant strides in this business, then it would be biologists and not us who are synthesizing man?" "But on the basis of this knowledge we'll be able to make an analysis of man." "An analysis!" I remembered the "streptocidal striptease with trembling,..." my near breakdown, the punchtape bonfire-and I got mad. "All right, let's drop our work, memorize all the textbooks and pharmacology manuals, master a mass of terms, acquire degrees and baldspots, and thirty years or so from now let's return to our work so that we can label it all properly. This is phosphocreatine, and this is gluten... a hundred billion labels. I've already tried to analyze your appearance. I've had it. The analytic path will take us the devil knows where." In a word, we didn't reach an agreement. This was the first instance when each of us retained his opinion. I still don't understand why he, a systems technologist, engineer, electronics man... well, the same as I... why he turned to biology. We have an experimental setup the likes of which he'll never find in any other lab. We have to run experiments, systemize the results and observations, establish general laws-I mean general ones, informational ones! Biological laws are a step backward in comparison. That's the way it's done. And that's the only way to study the best way to control the computer-womb-after all, it's a computer first and foremost. The arguments continued during the next few days. We got angry, attacking one another. Each one used arguments in his favor. 'Technology shouldn't be copying nature; it should be complementing it. We plan to double good people. And what if the good man is limp? Or lost an arm in the war? Or is in lousy health? After all, a man's worth is usually known when he has reached a ripe old age; and then his health isn't what it used to be, and maybe senility is creeping up ... and we should re-create all that, too?" "No. We have to find a way to iron out the wrinkles in the doubles. Let them be healthy, attractive." 'There, you see!" "What see?" "In order to correct the doubles you need biological information on a good constitution and attractive looks. Biological!" "I don't see that. If the computer, without any biological preparation, can re-create an entire person, then why does it need information when it will be creating parts of a person? Biological information won't help you construct a person or an arm. You crazy person, why can't you see that we can't delve into all the details of the human organism? We can't. We'll get bogged down. There are untold billions of them, and no two are the same. Nature didn't follow a few state plans, you know. That's why the question of correcting doubles must be reduced to tuning the computer-womb by external integral characteristics ... in other words, so that we just have a few dials to spin!" "Well, really!" He would spread his hands in shock and walk away. This situation was getting on our nerves. We had wandered into a logistical dead end. A difference in opinion on future work is nothing so terrible; finally you can try it both ways and let the results be the judge. The unbearable part was that we did not understand each other! Us-two informationally identical people. Is there any truth in the world in that case? I began reading his collection of biology opuses (when he was on duty at the lab). Maybe I just had an antibiology hangover from my school days and now I would read it, and be amazed, and start mumbling: "Now that's it!" I didn't. There was no question; it was an interesting science, and there were a lot of edifying details (but only details!) about the functions of the organism. It was good for one's general development, but it wasn't what we needed. It was a descriptive and approximate science, another form of geography. What did he see in it? I'm an engineer-that says it all. After ten years of work, machines have entered my soul, and I feel confident working with them. In machines, everything is subject to reason and my hands; everything is definite. If it's yes, then it's yes; if it's no, then it's no. Not like with people: "Yes, but..." followed by a phrase that crosses out the "yes." And yet the double was me.... We began avoiding our painful argument and worked in silence. Maybe everything would work out and we would understand each other. The information chamber was almost ready. Another day or two and we could let the rabbits in. And then what had to happen sooner or later finally happened: the phone rang in the laboratory. It had rung before. "Valentin Vasilyevich, either produce a form requisitioning the reagents by June 1 or we'll close the supply department as far as you're concerned!" The call was from accounting. "Comrade Krivoshein, drop into department one," said Johann Johannovich Kliapp. "Old man, can you lend me your silver-nickel battery for a week?" said good old Fenya Zagrebnyak. And so on. But this was an absolutely special call. As soon as my double had said "Krivoshein here," he looked beatifically dumb. "Yes, Lena," he murmured, "yes ... no, no, dearest. Don't be silly... every day and every hour!" Pliers in hand, I froze by the chamber. My beloved was being taken away from me before my very eyes. My beloved! I knew that for sure now. I got hot. I coughed wheezily. My double looked up at me with eyes clouded with tender desire and came to. He was grim and sad. "Just a second, Lena, . . ." and he handed me the phone. "It's basically for you." I grabbed the phone and shouted: "I'm listening, darling. Go on!" Actually, there's no need to describe what we talked about. She, it turned out, was away on a business trip and had only returned yesterday. Of course, she was mad about the May 1 holidays. She had expected a call from me. When I hung up, the double was gone from the lab. I didn't feel like working any more either. I locked up the lodge and headed off for home, whistling, to shave and change for that evening. My double was packing. "Going far?" "To the village to visit my aunt, to the sticks, to Saratov! To Vladivostok to lick salt spray from my lips. It's none of your business." "No, drop the jokes. Where are you going? What's up?" He looked up at me: "You really don't understand? Well, that makes sense. You're not me." "No, why not? You are me, and I am you. That, anyway, was always our starting point." 'That's the point-it's not so." He lit up a cigarette and took a book from the shelf. "I'll take Introduction to Systemology. You can use the library. You are number one, and I'm the second. You were born, grew up, developed, took on a certain position in society. Every man has some place in life. Whether it's good or bad, it's his own. I have no place. It's taken! Everything's taken, from girl friend to civil position, from the bed to the apartment." "You can sleep on the bed, for God's sake, I don't have any objections." "Don't talk nonsense. The bed isn't the point." "Listen, if you're leaving over Lena, then . . . maybe we can experiment a little more, and ... maybe we can try it?" "Re-create a second Lena, an artificial one?" He laughed darkly. "So that she can hang around life like a ticketless passenger. A reward for a good life... what a stupid idea that was! The best pupils, they're a bunch of spoiled privileged people. Imagine Arkady Arkadievich's double: Academician A. A. Azarov, but without an institute to run, without a framework, without membership in the academy, without a car and apartment-without anything except his personal qualities and pleasant memories. What would his life be like?" He put a towel, toothbrush, and toothpaste into the suitcase. "In a word, I've had it. I can't lead a double entendre life any more-worrying about being seen together, looking around in the cafeteria, taking money from you. Yes, I'm taking your money from you, being jealous of you and Lena. Why should I suffer like that-for what sins? I'm a man, not an experimental subject and not somebody's double!" "How about the work?" "And who says I'm planning to drop the work? The chamber is almost ready, and you can run the experiments yourself. There's little for me to do here. I'll go away and study the problem of man and machine from the other end." He told me his plan. He was going to Moscow to enter the graduate biology department of MSU. The work was dividing up into two streams: I would study the computer-womb and determine its possibilities; he would study man and his possibilities. Then-different by then, with different experiences and ideas-we'd put the work together. "But why biology? Why not philosophy, sociology, psychology, or life studies, or fine arts? They all deal with man and human society. Why?" He looked at me thoughtfully. "Do you believe in intuition?" "Well, maybe." "My intuition tells me that if we overlook biological research, we will lose something very important. I don't know yet just what. I'll try to explain in a year." "But why doesn't my intuition say any such thing?" "Damned if I know!" he sighed with his old expressiveness. His good mood was returning. "Maybe you're just a dumb jackass." "Sure, sure. And you're brilliant and sensitive-like the dog that can feel everything but can't express any of it!" In a word, we had a talk. Everything was clear: he had to gather individual information, to become his own person. And I accepted the fact that in order to do that he had to be away from me, somewhere on his own. To tell the truth, our "double" situation was beginning to wear on me, too. But that biology stuff-I really didn't understand that at all.... The graduate student leaned back in his chair and stretched. "And couldn't understand it." he said aloud. In those days he didn't understand himself. Chapter 13 In Lieu of an Epigraph "The theme of today's lecture is: why does the student sweat at exams? Quiet, comrades! I suggest you take notes-the material is on the subject.... Thus, let us examine the physiological aspects of the situation that all of you present have had to experience. The oral exam is on. The student through various contractions of the lungs, thorax, and tongue is creating air vibrations-answering his question. His visual analyzers control the accuracy of his response by the notes in his hand and by the nods of the examiners. Let us sketch the reflex chain: the executive apparatus of the second signal system utters a phrase-the visual organs register a reinforcing stimulus, a nod-and the signal is passed to the brain and supports the stimulation of nerve cells in the proper part of the cortex. A new phrase... a nod... and so on. This is often accompanied by a secondary reflex reaction: the student gesticulates, which makes his answer all the more convincing. Meanwhile the unconditioned reflex chains operate on their own, inexorably and unconstrainedly. The trapezoid bone and broad muscles of the back support the student's body in an upright sitting position-as natural for us as the position of walking was for our predecessors. The chest and intercostal muscles maintain rhythmic breathing. Other muscles are tensed just enough to counteract gravity. The heart beats evenly; the sympathetic nervous system has stopped the digestive process so as not to distract the student. . . and everything is in order. But now the student registers a new aural stimulus through his eardrums and membranes of the ears: the examiner has asked him a question. I never tire of observing what follows-and I assure you, there is no sadism in this. It's simply pleasant to watch how quickly and clearly, taking the millions of years experience of our ancestors into account, our nervous system reacts to the slightest hint of danger! Look: new air vibrations first bring on the end of the previous activity of the unconditioned reflexes-the student stops talking, often in mid-word. Then the signals from the hearing cells reach the medulla, excite the nerve cells of the rear tubers of the lamina tecti which commands the unconditioned reflex of caution: the student turns his head in the direction of the examiner! Simultaneously the signals of the aural stimulus branch off into the diencephalon, and from there into the temporal lobes of the cortex, where a hurried meaning analysis is undertaken of the air vibrations. I want to direct your attention to the high expediency level of the location of the analyzers of aural stimuli in the cortex-right next to theears. Evolution naturally took into account that a sound in the air moves very slowly: some 300 meters a second, almost the same as the speed of signals traveling along nerve fiber. Yet a sound could be the rustle of a lurking tiger, the hissing of a snake, or-in our times-the noise of a car careening around the corner. You can't lose even a fraction of a second to transmit the sound through the brain! But in the present situation the student recognized not the rustle of a tiger but a question posed in a quiet, polite voice. Hah, I think some would prefer the tiger! I assume that I don't have to explain that a question asked during an oral exam is taken as a signal of danger. After all, broadly speaking, danger is an obstacle in the path toward a given goal. In ourwell-ordered times there are few dangers that threaten the basic goals of a living being which are protection of life and health, propagation of the species, and satisfaction of hunger and thirst. That's why secondary dangers-the protection of dignity, respect, scholarships, the opportunity to study and then have an interesting job and so on-take on primary prominence. Thus, the student's unconditioned reflex reaction to danger worked beautifully. Let's see how he reflects it. In biochemistry lectures you have been familiarized with the properties of ribonucleic acid, which is found in all the brain cells. Under the action of electrical nervous signals RNA changes the continous distribution of its bases: thymine, uracil, cytosine, and guanine. These bases are the letters of our memory; we can write down any information in the cortex of the brain using combinations of them. And so, this is the picture: the question, understood in the temporal sites of the cortex leads to the excitation of nerve cells that take care of abstract knowledge in the student's brain. Weak response impulses arise in neighboring areas of the cortex: "Aha, I read something about that!" So the stimulation concentrates in the most hopeful of these areas, takes it over, and-oh horrors!-there with the help of thymine, uracil, cytosine, and guanine there is recorded God only knows what in long molecules of RNA, for instance: "Drop your studying, Alex! We need a fourth!" Quiet down, comrades, don't be distracted. And then a quiet panic in the brain sets in-or, less colorfully speaking, a total irradiation of stimulation. The nerve impulses arouse the areas of logical analysis (maybe I'll figure something out!) and the cells of visual memory (maybe I've seen it?). Vision, hearing, and sense of smell sharpen. The student sees with amazing acuity the ink spot on the edge of the desk and a bunch of scribbles, hears the leaves rustling outside the window, someone's footsteps in the hall, and even the whisper: "Guys, Alex is in trouble!" But that's not it. And so stimulation passes to greater and newer parts of the brain-danger, danger-spilling over the motor centers in the frontal convolution, penetrating into the midbrain, the medulla, and finally, into the spinal cord. And here I want to move away from the dramatic situation to sing the praises of the soft grayish white growth about a half meter in length that penetrates our spine to the waist-the spinal cord. The spinal cord ...oh, we are greatly mistaken if we think that it is nothing more than an intermediary between the brain and the body's nerves, that it is subjugated to the brain and can only control a few simple reflexes of natural functions! It's still a moot point as to which is subordinate to which! The spinal cord is an older and more venerable process than the brain. It saved man in those days when his brain wasn't developed enough, when in fact he wasn't yet man. Our spinal cord guards memories of the Paleozoic, when our distant ancestors, the lizards, wandered, crawled, and flew among giant ferns; of the Cenozoic, the period when the first apes appeared. It has sorted and stored synapses and reflexes proven over millions of years to be effective in the struggle for survival. The spinal cord, if you will, is our inner seat of rational conservatism. Of course nowadays, that old cord of man, which can react to the complex stimulation of contemporary reality in only two positions-saving life and propagating the species-can't help us out all the time, as it did in the Mesozoic Era. But it still has influence on many things! For example, I would posit that it is the spinal cord that often determines our literary and cinematic tastes. What? No, the spinal cord is not literate and does not contain any special reflexes for viewing film. But, tell me, why do we soften prefer detective movies and novels, no matter how poorly they are made or written? Why do so many of us like love stories-everything from jokes and gossip to the Decameron? Because it's interesting? Interesting? Why is it interesting? Because the firmly engrained instincts for survival and propagation encoded in our spinal cords force us to gather information-what can you die of?-so that we can save ourselves in that situation. How and why does happy and true love come about, the kind that results in offspring? What destroys it?-so that you don't blow it yourself. And it doesn't matter that such a dangerous situation may never come up in your safe, comfortable lives. And it doesn't matter that there is love and more descendants than you know what to do with-the spinal cord tows its line. I'm not going to call these desires in the viewer and reader base, as so many critics do. Why? These are healthy, natural desires, admirable desires. If cows in their evolution ever learn to read, then they'll also begin with mysteries and romances. But let us return to the student whose brain failed him in responding to the examiner's question. "Ah, you greenhorn," the spinal cord seems to say to its colleague as it receives the panic signals and goes into action. First, it sends signals to the motor nerves of the entire body; the muscles tense into a position of readiness. The primary sources of muscular energy-adenosine triphosphate and phosphocreatine-break down in tissue into adenosine diphosphate and creatine, releasing phosphoric acid and the first amounts of heat and energy. And I want to direct your attention once more to the biological expediency of raising muscle tone. After all, danger in the old days required quick energetic movement, to leap away, strike, bend, climb a tree. And since it is not yet clear which way you will have to jump or strike, all the muscles are brought into readiness. Simultaneously, the sympathetic nervous system is also stimulated and begins to command the whole kitchen array of metabolism in the organism. Its signals reach the adrenal gland, which throws adrenaline into the blood, stimulating everything. The liver and spleen, like sponges, squeeze out several liters of extra blood into the circulatory system. Blood vessels expand in the muscles, lungs, and brain. The heart beats faster, pumping blood into all the organs, and with it, oxygen and glucose. The spinal cord and the autonomous nervous system prepare thestudent's bodyforheavy, fierce, and long fighting for life or death! But the examiner cannot be stunned with a cudgel or even with a marble inkwell. And you can't run away from him either. The examiner won't be satisfied even if the student, overflowing with muscular energy, performs a handstand on the desk instead of answering the question. That's why the secret, stormy activity of the student's organism ends in a useless burning up of glucose in the muscles and heat generation. The thermoreceptors in different parts of the body send hysterical signals of overheating to the brain and spinal cord. And the brain responds in the only way it knows-by expanding the vessels of the skin. Blood rushes to the skin (incidentally, also causing the student to blush) and heats up the air between the body and the clothes. The sweat glands open up to help the student with evaporation of moisture. The reflex chain, stimulated by the question, is finally over. I'm sure you will make your own conclusions about the role of knowledge in the correct regulation of the human organism in our complex environment, and about its role in the regulation of the student organism at our next session..." From a lecture by Professor V. A. Androsiashvili in his course, Human Physiology. Yes, he was leaving in order to become himself, and not the Krivoshein who lived and worked in Dneprovsk. He threw the apartment key which Val had tucked into his pocket out of the train window. He crossed out all the addresses and phone numbers of Moscow acquaintances from his book, including his Aunt Lapanalda. He had no friends, no relatives, no past-only the present, from the moment he entered the biology department, and the future. He knew a simple but dependable way of establishing himself in the future; the method had never let him down. It was work. And he had more than that. Once upon a time physicists had perfected the methods of measuring the speed of light, just so that they could achieve the greatest accuracy. They did. And they determined a scandalous fact: the speed of light did not depend on the speed of motion of the light source. "Impossible! The equipment is wrong! The results contradict classical mechanics!" They checked. They measured the speed of light another way-with the same results. And the almost completed, logically perfect universe rising in the scaffolding of right-angled coordinates, crumbled, raising an awful lot of dust. The "crisis of physics" began. The human mind often strives for a reconciliation of all the facts in the world rather than for a deeper knowledge of those facts: the important thing is for everything to become simpler and more logical. And then some sneaky little fact floats out, irreconcilable with the neat theories, and you have to start all over again.... They had also created a simple and understandable picture in their minds of how a computer creates a man from information about man. The computer-womb was playing children's games with blocks. In a liquid medium via electrical impulse it combined molecules into molecular chains, the molecular chains into cells, and the cells into tissue-with the sole difference that there were untold billions of "informational blocks." The fact that the result of the game was not a monster or even another person, but Krivoshein's informational double, proves that there was only one solution to the puzzle. Well, naturally, it couldn't have been any other way: blocks can only fit into a picture that exists in their surfaces. The variants (a fragmented Lena, a fragmented father, the "delirium of memory," the eyes and feelers) were merely informational garbage that could not exist independent of the computer. This concept was not incorrect, merely superficial. It suited them, as long as the facts supported the theory that they were the same externally and in thoughts and deeds. But when irreconcilable differences came up on the use of biology in their work, this concept turned out to be inadequate. Yes, it was their inability to understand each other, and not the interest in biology (which might have passed in Krivoshein-2 with no harmful effects), that became to his discovery what the constancy of the speed of light was to the theory of relativity. A man never knows what's banal about him and what's original; that only comes in comparsion with others. And unlike other people, Krivoshein-2 could compare himself to not only his acquaintances, but to "himself" as well. Now it became very clear to graduate student Krivoshein what the difference between them was: their ways of appearing were different. Valentin Krivoshein appeared over three decades ago the way every living thing did-from an embryo, in which a program for building a human being developed over thousands of centuries and in which generations had been encoded by a specific arrangement of protein and DNA. But the computer-womb, even though it was working from individual Krivoshein information, was still dealing with random information; it had to seek out the principles of formation and all the details of the biological information system. And the computer found a way different from nature's: a biochemical assembly instead of embryonic development. Yes, now there was much that he understood. In a year he had passed from sensations to knowledge and from knowledge to mastery of himself. And then... then it had merely been a powerful attraction to biology and the inexpressible certainty that this was where he had to seek his answers. He couldn't even explain it well to Krivoshein. He came to Moscow with the vague feeling that something was wrong with him. He wasn't sick or imagining things, but he had to figure himself out, to make sure that his feeling was reality and not an idee fixe or a hypochondriacal hallucination. He worked so hard that he could look back on the days at the institute in Dneprovsk as if they had been a vacation. Lectures, lab work, the anatomy theater, the library, lectures, seminars, lab work, lectures, the clinic, the library, lab work.... He never left the Lenin Hills campus during the first semester; he would walk down to the parapet before going to bed, to look down at the Moscow River, smoke, enjoy the lights glimmering and blending with the stars on the horizon. A gray-eyed, second-year student who resembled Lena always sat next to him in Androsiashvili's class, which he attended. Once she asked: "You're so solid, so serious-were you in the Army?" "In prison," he replied, jutting out his jaw. The girl lost interest in him. It had to be. Girls take up too much time. And he was convinced by every experiment, every calculation. Yes, in a cross section of a nerve bundle that goes from the brain to the pituitary gland, under a microscope you can actually count approximately a hundred thousand fibers-and that means that the pituitary is closely monitored by the brain. Yes, if you add beta-active calcium to a lab monkey's diet of bananas and then use a Geiger counter on its excretions, it really is true that bone tissue renews itself approximately twice a year. Yes, if you stick electrode needles into muscle tissue and conduct sound into earphones, you can really hear a rhythmic quacking or a fragmented pulse of the nerve signals, and these sounds corresponded with what he was feeling! Yes, skin cells actually do move up toward the surface, changing structure, dying, so that they can slough off and make room for new ones. He studied his own body. He took blood samples and lymphatic samples; he got a piece of muscle tissue from his right hip and examined it under an optical microscope and then an electronic one; he calumnied himself to get a Wassermann at the school clinic. And he determined that everything in him was normal. Even the amount and distribution of nerves in the tissue was the same as in the bodies they dissected in anatomy class. The nerves went up to the brain, but he couldn't get in there with the use of laboratory technology. He would have to implant too many electrodes into his skull and plug into too many oscilloscopes to understand the secrets of his self. And would he understand them then? Or would he come up with "streptocidal striptease"-not in binary alphabet, but in the jagged lines of an electroencephalogram? The situation-a living person studying his own organism can't even breech the mysteries of his body with laboratory equipment-was paradoxical. After all, this wasn't a question of discovering invisible "radiostars" or synthesizing antiparticles. All the information was in man. All that remained was to translate the code of the molecules, cells, and nerve impulses into the code of the secondary signal system-words and sentences. Words and phrases are necessary (but not always) for one man to understand another. But are they necessary to understand oneself? Krivoshein didn't know. That's why he tried everything: analysis, imagination, books, monitoring the sensations of his body, conversations with Androsiashvili and other teachers, observation of patients at the clinic, autopsies.... Everything that Vano Aleksandrovich had argued in that memorable December conversation was right, since it was defined by Androsiashvili's knowledge of the world and his faith in the indisputable expediency of everything created by nature. But the professor did not know one thing: that he was conversing with an artificial man. Even Vano Aleksandrovich's doubts about the success of his plan were solidly based, because Krivoshein's starting point was an engineering computer solution. That December he began planning an "electropotential inductor"-a continuation of the idea of Monomakh's Crown. A hundred thousand microscopic electrode needles, connected to the matrices of a self-learning automated machine (in the lab the bionics people modeled reflex actions on it), were supposed to supply the brain cells with auxiliary charges, bringing artificial biowaves through the skull, and thereby connecting the thinking centers of the cortex with the autonomous nervous system. Krivoshein laughed. How silly to think that such primitive apparatus could have punched up his organism! At least he hadn't dropped his physiology studies for that project. When he performed an autopsy, he mentally revived the corpse: he imagined that he himself lay on the dissecting table, that it was his white nerve fibers running through the muscles and cartilage to the purple, yellow fat-encrusted heart, to the watery clusters of salivary glands under the chin, to the gray rags of collapsed lungs. Other fibers wove into white cords of nerves that went to the pelvis, the spinal cord and up, through the neck, under the skull. Signal commands ran along them from there: contract the muscles, speed up the heart, squeeze out saliva! In the student cafeteria he followed the movement of every gulp of food to his stomach, trying to imagine and feel how, in the darkness, it was slowly kneaded by the smooth muscles, broken down by hydrochloric acid and enzymes, how the dull yellow mash was absorbed into the walls of the intestine. Sometimes he spent two hours sitting over a cold cutlet. Actually, he was remembering. Nine-tenths of his discoveries were due to the fact that he remembered and understood how it had happened. The computer-womb had no reason to begin with a fetus; it had enough material to assemble an adult. Krivoshein, the original, had made sure of that. At first the vague biological mixture in the tank contained only "wandering" currents and "floating" potentials from external circuits-these colorful terms from theoretical electronics were quite literal in this case. Then the transparent nerve fibers and cells appeared-a continuation of the electronic circuits of the computer. The search for informational equilibrium continued. The nervous system was becoming more and more voluminous and complex, and the layers of nerve cells turned into the cortex and subcortex. That's when his brain appeared, and from that moment on, he existed. At first his brain was also a continuation of the computer's circuits. But now he received impulses of external information, sifted it and tried combinations, and looked for a way to realize the information in a biological medium. He was assembling himself! In the vat a system of nerves-for now still random-spread. Muscle tissue, vessels, bones, and inner organs began appearing around the nerves-in that practically liquid state when they could dissolve, blend, change structure under orders of the nerve impulses. No, this wasn't an intelligent assembly of a body following a blueprint, since there was no blueprint. The building block game continued, a sifting through many variants and choosing of the only one among them that reflected the information on Krivoshein. But now, like the computer which evaluated every variant of the solution with binary signals, his computer brain evaluated the synthesis of a body with a binary code of sensation: Yes meant it felt good, No, that it hurt. Unsuccessful combinations of cells, the incorrect distribution of organs were transmitted to the brain as a dull or sharp pain; the successful and correct one, as delicious satisfaction. And the memory of the search, the memory of the sensations of the body under construction remained within him. Life creates people who differ little in the properties of the organism, but are very different in their psychology, personality, knowledge, and spiritual refinement or crudity. The computer-womb acted in the opposite manner. The graduate student Krivoshein was identical to Krivoshein in psychology and intellect, but that was understandable. Those qualities in a person develop through the same process of random retrieval and choice. The computer merely repeated the retrieval. But biologically they differed the way a book differs from its rough draft. Not just one draft, but all the drafts and sketches that went into creating a finished and polished work. Of course, the contents were the same, but the drafts retain the path of finding and choosing the right words in their corrections, additions, and deletions. "Actually, that comparison is imperfect, too," the frowning student mused. "The drafts of books appear before the books, not afterwards. And if you show a scribbler all the drafts of War and Peace would that make him a genius? Well, I guess they would teach him something.... No, I guess it's better to leave comparisons out of this!" Man recalls what he knows in only two situations: when he must recall it-goal recollection-and when he encounters something that even remotely resembles the code in his brain. This is called associative recall. The biology books were the hint that stimulated his memory. But the difficulty lay in the fact that he did not remember words or even images, but only sensations. Even now he couldn't convey it all in words-and probably would never be able to. Of course, that's not the important thing. What is important is the fact that such information exists. Because "knowledge in sensation" gave birth to a clear, thought-out idea in him to control his own metabolism. It happened the first time on the evening of January 28 in the forms. It turned out just like Pavlov's dogs-artificial salivation. But he wasn't thinking about food (he had had a dinner of kefir and sausage), but about the nerve regulation of the salivary glands. As usual he tried to visualize the entire path of the nerve impulses from the taste receptors in the tongue through the brain to the salivary glands and suddenly felt his mouth fill up with saliva! Still only fully aware of how it had happened, he concentrated on a frightened protest-"No!"-and his mouth went dry instantly! That evening he repeated the mental orders "Saliva!" and "no!" until his mouth convulsed. He spent the rest of the week in his room-luckily it was a school vacation, and he didn't have to be distracted by lectures and labs. Other organs listened to his mental orders. At first he could only command them crudely. Streams of tears poured from his eyes; sweat appeared in profusion all over his skin or immediately dried up; his heart either quieted down to a near comatose rate or else beat wildly at a hundred forty beats a minute-there was no middle ground, And when he commanded his stomach to stop excreting hydrochloric acid he had such intense diarrhea that he barely had time to get to the bathroom. But gradually he learned to control external excretions gently and locally; once he even managed to spell out "IT'S WORKING!" on his back with beads of sweat, like a tattoo. Then he moved his experiments to the lab and first of all repeated the effect of the sugar injection made famous by Claude Bernard. But now he didn't have to open the skull and inject the midbrain. The amount of sugar in his blood increased as a result of a mental command. But in general it was much more complex dealing with internal secretion. The results were not so apparent or so fast. He made puncture marks all over his fingers and muscles checking whether the glands were obeying his commands to secrete adrenaline, insulin, glucose, or hormones. He irritated his gullet with probes trying to determine the reaction to his commands on changing acidity. Everything was working-and everything was very difficult. Then he caught on. He should give his organism a specific goal, to do this and that, produce certain changes. And really when he walked, he didn't command the muscles: "Right rectus-contract... biceps-now... left gastrocnemius...." He didn't have time for that. The conscious mind sets a specific goal: go faster or slower, go around the post, turn into the driveway. And the nerve centers of the brain take care of the muscles. And that's how it should be with this. It wasn't his business which glands and vessels would produce individual reactions, as long as they did what he wanted! Words and images got in the way. He was overexplaining. He told the liver how to synthesive glycogen from amino acids and fats, break down the glycogen into glucose, and excrete it into the blood; he told the thyroid to contract and squeeze out drops of thyroxin into the blood; he told the circulatory system to expand the capillaries in the large chest muscles and to contract the other vessels-and nothing happened, his pectorals didn't grow bigger. After all, the liver didn't know it was the liver, and the thyroid didn't have the slightest idea what thyroxin was and couldn't picture a drop of it. Krivoshein cursed himself for excessive attention at his lectures and in the library. The result of all this exertion was only a headache. The problem was that in order to control metabolism within himself, he had to avoid numbers, terms, and even images, and think only in sensations. The problem came down to changing "knowledge in sensation" into a tertiary signal system of controlling internal secretions with the aid of sensations. The funniest part was that he didn't need lab apparatus or control circuits. All he had to do was lie in a darkened room, eyes closed and ears plugged