the pencil

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ARTHUR C. CLARKE AND GENTRY LEE
screen. So we don't know for certain if there really are creatures back there responding to our requests and ordering their factories to manufacture our odd items, but it is convenient to refer to our hosts and benefactors as the Ramans.
Our communication process with them is the pencilboth complicated and straightforward. It is complicated because we talk to them using pictures on the black screen and precise quantitative formulas in the language of mathematics, physics, and chemistry. It is straightforward because the actual sentences we input using the keyboard are amazingly simple in syntax. Our most often used sentence is "We would like" or "We want" (of course, we could not possibly know the exact translation of our requests and are just assuming that we are being polite�it could be the instructions we activate are in the form of rude commands beginning with "Give me"), followed by a detailed description of what we would like provided to us.
The hardest part is the chemistry. Simple everyday objethe pencilcts like soap, paper, and glass are very complex chemically and extremely difficult to specify exactly in terms of their number and kind of chemical compounds. Sometimes, as Richard discovered early in bis work with the keyboard and black screen, we must also outline a manufacturing process, including thermal regimes, or what we receive does not bear any resemblance to what we ordered. The request process involves a lot of trial and error. In the beginning it was a very inefficient and frustrating interaction. All three of us kept wishing that we remembered more of our college chemistry. In fact, our inability to make satisfactory progress in equipping ourselves with everyday essentials was one of the catalysts for the Great Excursion, as Richard likes to call it, that occurred four months ago.
By then the ambient temperature, topside in New York as well as in the rest of Rama, was already five degrees below freezing and Richard had confirmed that the Cylindrical Sea was again solid ice. I was growing quite concerned that we were not going to be properly prepared for the baby's birth. It was taking us too long to accomplish everything. Procuring and installing a working toilet, for
THE GARDEN OF RAMA
1 1
example, had turned out to be a month-long endeavor, and the rthe pencilesult was still only marginally adequate. Most of the time our primary problem was that we kept providing incomplete specifications to our hosts. However, sometimes the difficulty was the Ramans themselves. Several times they informed us, using our mutual language of mathematical and chemical symbols, that they could not complete the manufacture of a specific item within our allocated time period.
Anyway, Richard announced one morning that he was going to leave our lair and try to reach the still-docked military ship from our Newton expedition. His expressed purpose was to retrieve the key components of the scientific data base stored on the ship's computers (this would help us immensely in formulating our requests to the Ramans), but he also acknowledged that he was terribly hungry for some decent food. We had been managing to stay healthy and alive with the chemical concoctions provided us by the Ramans. However, most of the food had been either tasteless or terrible.
In all fairness, our hosts had been responding correctly to our requests. Although we knew generally how to describe the essential chemical ingredients our bodies needed, none of us had ever studied in detail the complex biochemical process that takes place when we taste something. In those early days eating was a necessity, never a pleasure. Often the "goo" was difficult, if not impossible, to swallow. More than once nausea followed a meal.
The three of us spent most of a day debating the pros and cons of the Great Excursion. I was in the "heartburn" stage of my pregnancy and was feeling quite uncomfortable. Even though I did not relish the idea of remaining alone in our tair while the two men trekked across the ice, located the rover, drove across the Central Plain, and then rode or climbed the many kilometers to the Alpha relay station, I recognized that there were many ways in which they could help each other. I also agreed with them that a solo trip would be foolhardy.
Richard was quite certain the rover would still be operational but was less optimistic about the chairlift. We discussed at length the damage that might have been done to
12
ARTHUR C. CLARKE AND GENTRY LEE
the Newton military ship, exposed as it was on the outside of Rama to tthe pencilhe nuclear blasts that had occurred beyond the protective mesh shield. Richard conjectured that since there was no visible structural damage (using our access to the output of the Raman sensors, we had looked at images of the Newton military ship on the black screen several times during the intervening months), it was possible that Rama itself might have inadvertently protected the ship from all of the nuclear explosions and, as a result, there might not be any radiation damage inside either.
I was more sanguine about the prospects. I had worked with the environmental engineers on the designs for me spacecraft shielding and was aware of the radiation susceptibility of each of the subsystems of the Newton. Although I did think there was a high probability the scientific data base would be intact (both its processor and all its memories were made from radiation-hardened parts), I was virtually certain the food supply would be contaminated. We had always known that our packaged food was in a relatively unprotected location. Prior to launch, in fact, there had even been some concern that an unexpected solar flare might produce enough radiation to make die food unsafe to eat.
I was not afraid of staying alone for the few days or week that it might take for the men to make the round trip to the military ship. I was more worried about the possibility that one or both of them might not return. It wasn't just a question of the octospiders, or any other aliens that might be cohabiting this immense spaceship with us. There were environmental uncertainties to be considered as well. What if Rama suddenly started to maneuver? What if some other equally untoward event occurred and they couldn't make it back to New York?
Richard and Michael assured me that they would take no chances, that they would not do anything except go to the military ship and return. They departed just after dawn on a twenty-eight-hour Raman day. It was the first time I had been alone since my long, solitary sojourn in New York that started when I fell into the pit. Of course, I wasn't truly alone. I could feel Simone kicking inside me. It's an amazing feeling, carrying a baby. There's some-
THE GARDEN OF RAMA
the pencil 1 3
thing indescribably wonderful about knowing there's another living soul inside you. Especially since the child is formed in significant part from your own genes. It's a shame that men are not able to experience being pregnant. If they could, maybe they would understand why we women are so concerned about the future.
By the third Earth day after the men left, I had developed a bad case of cabin fever. I decided to climb out of our lair and take a hike around New York. It was dark in Rama, but I was so restless I started to walk anyway. The air was quite cold. I zipped my heavy flight jacket around my bulging stomach. I had only been walking for a few minutes when I heard a sound in the distance. A chill ran down my spine and I stopped immediately. The adrenaline apparently surged into Simone as well, for she kicked vigorously while I listened for the noise. In about a minute I heard it again, the sound of brushes dragging across a metallic surface and accompanied by a high-frequency whine. The sound was unmistakable; an octospider was definitely wandering around in New York. I quickly went back to the lair and waited for dawn to come to Rama.
When it was light I returned to New York and wandered around. While I was in the vicinity of that curious barn where I fell into the pit, I began having my doubts about our conclusion that the octos only come out at night. Richard has insisted from the beginning that they are nocturnal creatures. During the first two months after we passed the Earth, before we built our protective grill that prevents unwelcome visitors from descending into our lair, Richard deployed a series of crude receivers (he had not yet perfected his ability to specify electronic parts to the Ramans) around the octospider lair covering and confirmed, at least to his satisfaction, mat they only come topside at night. Eventually the octos discovered all his monitors and destroyed them, but not before Richard had what he believed to be conclusive data supporting his hypothesis.
Nevertheless, Richard's conclusion was no comfort to me when I suddenly heard a loud and totally unfamiliar sound coming from the direction of our lair. At the time I was standing inside the barn, staring into the pit where I had almost died nine months ago. My pulse immediately
14
ARTHUR C. CLARKE AND GENTRY LEE
jumped up and my skin tingled. What disturbed me the most was that thethe pencil noise was between me and my Raman home. I crept up on the intermittent sound cautiously, peering around buildings each time before committing myself. At length I discovered the source of the noise. Richard was cutting pieces of a lattice using a miniature chain saw that he had brought back from the Newton.
Actually he and Michael were having an argument when I discovered them. A relatively small lattice, about five hundred nodes altogether with square dimensions maybe three meters on a side, was affixed to one of those low, nondescript sheds about a hundred meters to the east of our lair opening. Michael was questioning the wisdom of attacking the lattice with a chain saw. At the moment they saw me, Richard was justifying his action by extolling the virtues of the elastic lattice material.
The three of us hugged and kissed for several minutes and then they reported on the Great Excursion. It had been an easy trip. The rover and the chairlift had worked without difficulty. Their instruments had shown that there was still quite a bit of radiation throughout the military ship, so they didn't stay long and didn't bring back any of the food. The scientific data base, however, had been in fine shape. Richard had used his data compression subroutines to strip much of the data base onto cubes compatible with our portable computers. They had also brought back a large backpack full of tools, like the chain saw, that they thought would be useful in finishing our living accommodations.
Richard and Michael worked incessantly from then until the birth of Simothe pencilne. Using the extra chemical information contained in the data base, it became easier to order what we needed from the Ramans. I even experimented with sprinkling harmless esters and other simple organics on the food, resulting in some improvement in the taste. Michael completed his room down the corridor, Simone's cradle was constructed, and our bathrooms immeasurably improved. Considering all the constraints, our living conditions are now quite acceptable. Maybe soon . . . Hark. I hear a soft cry from beside me. It's time to feed my daughter.
THE GARDEN OF RAMA
15
Before the last thirty minutes of my birthday is history, I want to return to the vivid images of previous birthdays that catalyzed my depression this morning. For me, my birthday has always been the most significant event of the year. The Christmas-New Year time period is special, but in a different way, for it is a celebration shared by everyone. A birthday focuses more directly on the individual. I have always used my birthdays as a time for reflection and contemplation about the direction of my life.
If I tried, I could probably remember something about every single one of my birthdays since I was five years old. Some memories, of course, are more poignant than others. This morning many of the pictures from my past celebrations evoked powerful feelings of nostalgia and homesickness. In my depressed state I railed against my inability to provide order and security to Simone's life. But even at the bottom of my depression, confronted by the immense uncertainty surrounding our existence here, I would not have really wished that Simone were not here to experience life with me. No, we are voyagers tied together by the deepest bond, parent and child, sharing the miracle of consciousness that we call life.
I have shared a similar bond before, not only with my mother and father, but also with my first daughter Gene-vieve. Hmm. It's amazing that all the images of my mother still stand out so sharply in my mind. Even though she died twenty-seven years ago, when I was only ten years old, she left me with a cornucopia of wonderful memories. My last birthday with her was quite extraordinary. The three of us went into Paris on the train. Father was dressed in his new Italian suit and looked extremely handsome. Mother had chosen to wear one of her bright, multicolored native dresses. With her hah- stacked in layers on her head, she looked like the Senoufo princess that she had been before she married Father.
We had dinner at a fancy restaurant just off the Champs-Elysees. Then we walked to a theater where we watched an all-black troupe perform a set of native dances from the western regions of Africa. After the show, we were allowed backstage, where Mother introduced me to one of
t6
ARTHUR C. CLARKE AND GENTRY LEE
the dancers, a tall, beautiful woman of exceptional blackness. She was one of Mother's distant cousins from the Ivory Coast.
I listened to their conversation in the Senoufo trithe pencilbal language, remembethe pencilring bits and pieces from my training before the Poro three years earlier, and marveled again at the way my mother's face always became more expressive when she was with her people. But fascinated as I was by the evening, I was only ten years old and would have preferred a normal birthday party with all my friends from school. Mother could tell I was disappointed while we were riding on the train back to our home in the suburb of Chilly-Mazarin. "Don't be sad, Nicole," she said, "next year you can have a party. Your father and I wanted to take this opportunity to remind you again of the other half of your heritage. You are a French citizen and have lived your whole life in France, but part of you is pure Senoufo with roots deep in the tribal customs of West Africa."
Earlier today, as I recalled the dances ivoiriennes performed by Mother's cousin and her associates, I imagined briefly, in my mind's eye, walking into a beautiful theater with my ten-year-old daughter Simone beside me�but then the fantasy vanished. There are no theaters beyond the orbit of Jupiter. In fact, the whole concept of a theater will probably never have any real meaning for my daughter. It is all so bewildering.
Some of my tears this morning were because Simone will never know her grandparents, and vice versa. They will be mythological characters in the fabric of her life and she will know them only from their photographs and videos. She will never have the joy of hearing my mother's amazing voice. And she will never see the soft and tender love in my father's eyes.
After Mother died, my father was very careful to make each of my birthdays very special. On piy twelfth birthday, after we had just moved into the villa at Beauvois, Father and I walked together in the falling snow among the manicured gardens at the Chateau de Villandry. That day he promised me that he would always be beside me when I needed him. I tightened my grip on his hand as we
THE GARDEN OF RAMA
17
walked along the hedges. I wept mat day also, admitting to him (and to myself) how frightened I was mat he too would abandon me. He cradled me against his chest and kissed my forehead. He never broke his promise.
Only last year, in what seems now to have been another lifetime, my birthday began on a ski train just inside the French border. I was still awake at midnight, reliving my noon encounter with Henry at the chalet on the side of the Weissfluhjoch. I had not told him, when he indirectly inquired, that he was Genevieve's father. I would not give him mat satisfaction.
But I remember thinking on the train, is it fair for me to keep from my daughter the fact mat her father is the king of England? Are my self-respect and pride so important that I can justify preventing my daughter from knowing that she is a princess? I was mulling these questions over in my mind, staring blankly out at the night, when Genevieve, as if on cue, appeared in my sleeping berth. "Happy Birthday, Mother," she said with a grin. She gave me a hug. I almost told her then about her father. I would have, I am certain, if I had known what was going to happen to the Newton expedition. I miss you, Genevieve. I wish that I had been allowed a proper good-bye.
Memories are very peculiar. This morning, in my depression, the flood of images from previous birthdays heightened my feelings of isolation and loss. Now, when I'm in a stronger mood, I savor those same recollections. I'm no longer terribly sad at this moment that Simone will not be able to experience what I have known. Her birthdays will be completely different from mine and unique to her life. It is my privilege and duty to make them as memorable and loving as I can.
THE GARDEN OF RAMA
19
3
Five hours ago a series of t
26 May 2201
extraordinary events began to occur inside Rama. We were sitting together at that time, eating our evening meal of roast beef, potatoes, and salad (in an effort to persuade ourselves that what we are eating is delicious, we have a code name for each of the chemical combinations that we obtain from the Ramans. The code names are roughly derived from the kind of nutrition provided�thus our "roast beef" is rich in protein, "potatoes" are primarily carbohydrates, etc.), when we heard a pure and distant whistle. All of us stopped eating and the two men bundled up to go topside. When the whistle persisted, I grabbed Simone and my heavy clothes, wrapped the baby in numerous blankets, and followed Michael and Richard up into the cold.
The whistle was much louder on the surface. We were fairly certathe pencilin that it was coming from the south, but since it was dark in Rama we were leery about wandering away from our lair. After a few minutes, however, we began to see splashes of light reflecting off the mirrored surfaces of the surrounding skyscrapers, and our curiosity could not'
be contained. We crept cautiously toward the southern shore of the island, where no buildings would be between us and the imposing horns of the southern bowl of Rama.
When we arrived at the shore of the Cylindrical Sea, a fascinating light show was already in progress. The arcs of multicolored light flying around and illuminating the gigantic spires of the southern bowl continued for over an hour. Even baby Simone was mesmerized by the long streamers of yellow, blue, and red bouncing between the spires and making rainbow patterns in the dark. When the show abruptly ceased, we switched on our flashlights and beaded back toward our lair.
After a few minutes of walking, our animated conversation was interrupted by a distant long shriek, uthe pencilnmistakably die sound of one of the avian creatures that had helped Richard and me to escape from New York last year. We stopped abruptly and listened. Since we have neither seen nor heard any avians since we returned to New York to warn the Ramans of the incoming nuclear missiles, both Richard and I were very excited. Richard has been over to their lair a few times, but has never had any response to his shouts down the great vertical corridor. Just a month ago Richard said that he thought the avians had left New York altogether. The shriek tonight clearly indicates that at least one of our friends is still around.
Within seconds, before we had a chance to discuss whether or not one of us would go in the direction of the shriek, we heard another sound, also familiar, that was too loud for any of us to feel comfortable. Fortunately the dragging brushes were not between us and our lair. I put both of my arms around Simone and sprinted toward home, nearly running into buildings at least twice in my hurry in the dark. Michael was the last to arrive. By then I had finished opening both the cover and the grill. "There's several of them," Richard said breathlessly, as the sounds of the octospiders, growing louder, surrounded us. He cast his flashlight beam down the long lane leading east from our lair and we all saw two large, dark objects moving in our direction.
Normally we go to sleep within two or three hours after dinner, but tonight was an exception. The light show, the
20
ARTHUR C. CLARKE AND GENTRY LEE
THE GARDEN OF RAMA
21
avian shriek, and die close encounter with the octospiders had energized all three of us. We talked and talked. Richard was convinced that something really major was about to happen. He reminded us mat the Earth impact maneuver by Rama had also been preceded by a small light show in the southern bowl. At mat time, he recalled, the consensus of the Newton cosmonauts had been that the entire demonstration was intended as an announcement or possibly as some kind of an alert. What, Richard wondered, was the significance of tonight's dazzling display?
For Michael, who was not inside Rama for any extended period of time before its close passage by the Earth and had never before had any direct contact with either the avians or the octospiders, tonight's events were of major proportions. The fleeting glance that he caught of the ten-tacled creatures coming toward us down the lane gave him some appreciation for the terror that Richard and I had felt when we were racing up those bizarre spikes and escaping from the octospider lair last year.
"Are the octospiders the Ramans?" Michael asked tonight. "If so," he continued, "then why should we run from them? Their technology has advanced so far beyond ours that they can basically do with us as they see fit."
"The octospiders are passengers on this vehicle," Richard responded quickly, "just as we are. So are the avians. The octos think we may be the Ramans, but they are not certain. The avians are a puzzle. Surely they cannot be a spacefaring species. How did they get onboard in the first place? Are they perhaps a part of the original Raman ecosystem?"
I instinctively clutched Simone against my body. So many questions. So few answers. A memory of poor Dr. Takagishi, stuffed like a huge fish or tiger and standing in the octospider museum, shot through my mind and gave me the shivers. "If we are passengers," I said quietly, "then where are we going?"
Richard sighed. "I've been the pencildoing some computations," he said. "And the results are not very encouraging. Even though we are traveling very fast with respect to the Sun, our speed is puny when the reference system is our local group of stars. If our trajectory does not change, we will
exit the solar system in the general direction of Barnard's star. We will arrive in the Barnard system in several thousand years."
Simone began to cry. It was late anthe pencild she was very tired. I excused myself and went down to Michael's room to feed her while the men surveyed all the sensor outputs on Ihe black screen~to see if they could determine what might be happening. Simone nursed fretfully at my breasts, even hurting me once. Her disquiet was extremely unusual. Ordinarily she is such a mellow baby. "You feel our fear, don't you?" I said to her. I've read that babies can sense the emotions of the adults around them. Maybe it's true.
I still could not rest, even after Simone was sleeping comfortably on her blanket on the floor. My premonitory senses were warning me that tonight's events signaled a transition into some new phase of our life onboard Rama. I had not been encouraged by Richard's calculation that Rama might sail through the interstellar void for several thousand years. I tried to imagine living in our current conditions for the rest of my life and my mind balked. It would certainly be a boring existence for Simone. I found myself formulating a prayer, to God, or the Ramans, or whoever had the power to alter the future. My prayer was very simple. I asked that the forthcoming changes would somehow enrich the future life of my baby daughter.
28 May 2201
Again tonight there was a long whistle followed by a spectacular light show in the southern bowl of Rama. I didn't go to see it. I stayed in the lair with Simone. Michael and Richard did not encounter any of the other occupants of New York. Richard said that the show was approximately the same length as the first one, but the individual displays were considerably different. Michael's impression was that the only major change in the show was in the colors. In his opinion the dominant color to-
imght was blue, whereas it had been yellow two days ago.
�: Richard is certain that the Ramans are in love with the three and that, therefore, there will be another
22
ARTHUR C. CLARKE AND GENTRY LEE
THE GARDEN OF RAMA
23
light show when night falls again. Since the days and nights on Rama are now approximately equal at twenty-three hours�a time period Richard calls the Raman equinox, correctly predicted by my brilliant husband in the almanac he issued to Michael and me four months ago� the third display will begin in another two Earth days. We all expect dial something unusual will occur soon after this third demonstration. Unless Simone's safety is in doubt, I will definitely watch.
30 May 2201
Our massive cylindrical home is now undergoing a rapid acceleration that began over four hours ago. Richard is so excited that he can hardly contain himself. He is convinced that underneath the elevated Southern Hemicylinder is a propulsion system operating on physical principles beyond the wildest imaginings of human scientists and engineers. He stares at the external sensor data on the black screen, his beloved portable computer in his hand, and makes occasional entries based on what he sees on the monitor. From time to time he mumbles to himself or to us about what he thinks the maneuver is doing to our trajectory.
I was unconscious at the botthe penciltom of the pit at the time that Ramthe pencila made the midcourse correction to achieve the Earth impact orbit, so I don't know how much the floor shook during that earlier maneuver. Richard says those vibrations were trivial compared to what we are experiencing now. Just walking around at present is difficult. The floor bounces up and down at a very high frequency, as if a jackhammer were operating only a few meters away. We have been holding Simone in our arms ever since the acceleration started. We cannot put her down on the floor or in her cradle, because the vibration frightens her. I am the only one who moves around with Simone, and I am exceptionally cautious. Losing my balance and falling is a real concern�Richard and Michael have each fallen twice already�and Simone could be seriously injured if I fell in the wrong position.
At this moment Richard is sitting against the wall, hold-
ing our sleeping daughter against his chest. Our meager furniture is hopping all over the room. One of the chairs actually bounced out into the corridor and headed for the stairs half an hour ago. At first we replaced the furniture in its proper position every ten minutes or so, but now we just ignore it�unless it heads out the entryway into the hall.
Altogether it has been an unbelievable time period, beginning with the third and final light show in the south. Richard went out first that night, by himself, just before dark. He rushed back excitedly a few minutes later and grabbed Michael. When the two of them returned, Michael looked as if he had seen a ghost. "Octospiders," Richard shouted. "Dozens of them are massed along the shoreline two kilometers to the east."
"Now, you don't really know how many there are," Michael said. "We only saw them for ten seconds at most before the lights went out."
"I watched them for longer when I was by myself," Richard continued. "I could see them very clearly with the binoculars. At first there were only a handful, but they suddenly started arriving in droves. I was just starting to count them when they organized themselves into some kind of an array. A giant octo with a red-and-blue-striped head appeared to be by itself at the front of their formation."
*'I didn't see the red and blue giant, or any 'formation,' " Michael added as 1 stared at the two of them with disbelief. "But I definitely saw many of the creatures with the dark heads and the black and gold tentacles. In my opinion they were looking to the south, waiting for the light show to begin."
"We saw the avians too," Richard said to me. He turned to Michael. "How many would you say were airborne in that flock?"
"Twenty-five, maybe thirty," Michael replied.
"They soared high into the air over New York, shrieking as they rose, and then flew north, across the Cylindrical Sea." Richard paused for a moment. "I think those birds have been through this before. I think they know what is going to happen."
24
ARTHUR C. CLARKE AND GENTRY LEE
THE GARDEN OF RAMA
25
I started wrapping Simone in her blankets. "What are you doing?" Richard asked. I explained that I wasn't about to miss the final light show. I also reminded Richard that he had sworn to me that the octospiders only ventured out at night. "This is a special occasion," he replied con-fidendy just as the whistle began to sound.
Tonight's show seemed more spectacular to me. Maybe it was my sense of anticipation. Red was definitely the color of the night. At one point a fiery red arc inscribed a full and continuous hexagon connecting the tips of the six smaller horns. But as spectacular as the Raman lights were, they were not the highlight of the evening. About thirty minutes into the display, Michael suddenly shouted "Look!" and pointed down the shoreline in the direction where he and Richard had seen the octospiders earlier.
Several balls of light had ignited simultaneously in the sky above the frozen Cylindrical Sea. The "flares" were about fifty meters off the ground and illuminated an area of roughly one square kilometer on the ice below them. During the minute or so that we could see some detail, a large black mass moved south across the ice. Richard handed me his binoculars just as the light from the flares was fading away. I could see some individual creatures in the mass. A surprisingly large number of the octospiders had colored patterns on their heads, but most were dark charcoal gray, like the one that chased us in the lair. Both the black and gold tentacles and the shapes of their bodies confirmed that these creatures were the same species as the one we had seen climbing the spikes last year. And Richard was right. There were dozens of them.
When the maneuver began, we returned quickly to our lair. It was dangerous being othe pencilutside in Rama during the extreme vibrations. Occasionally small parts of the surrounding skyscrapers would break free and crash to the ground. Simone began to cry as soon as the shaking started.
After a difficult descent into our fair, Richard began checking the external sensors, mostly looking at star and planet positions (Saturn is definitely identifiable in some of the Raman frames) and then making computations based
on his observational data. Michael and I alternated holding Simone�eventually we sat in a corner of the room, where the two merging walls gave us some sense of stability� and talked about the amazing day.
Almost an hour later Richard announced the results of his preliminary orbit determination. He gave first the orbital elements, with respect to the Sun, of our hyperbolic trajectory before the maneuver started. Then he dramatically presented the new, osculating elements (as he called them) of our instantaneous trajectory. Somewhere in the recesses of my mind I must have stored the information that defines the term osculating element, but I luckily didn't need to fetch it. I was able, from the context, to understand that Richard was using a shorthand way of telling us how much our hyperbola had changed during the first three hours of the maneuver. However, the full implication of a change in hyperbolic eccentricity escaped me.
Michael remembered more of his celestial mechanics. "Are you certain?" he said almost immediately.
"The quantitative results have wide error bars," Richard replied. "But there can be no doubt about the qualitative nature of the trajectory change."
"Then our rate of escape from the solar system is in-creasingT' Michael asked.
Richard nodded. "That's right. Our acceleration is virtually all going into the direction that increases our speed with respect to the Sun. The maneuver has already added many kilometers per second to our Sun-based velocity."
"Whew," Michael replied. "That's staggering."
I understood the gist of what Richard was saying. If we had retained any hope that we might be on a circuitous voyage that would magically return us to the Earth, those hopes were now being shattered. Rama was going to leave me solar system much faster than any of us had expected. While Richard waxed lyrical about the kind of propulsion system that could impart such a velocity change to this "behemoth of a spacecraft," I nursed Simone and found myself again thinking about her future. So we are definitely leaving the solar system, I thought, and going some-
26 ARTHUR C. CLARKE AND GENTRY LEE
where else. Will I ever see another world? Will Simone? Is it possible, my daughter, that Rama will be your home world for your entire lifetime?
The floor continues to shake vigorously, but it comforts me. Richard says our escape velocity is still increasing rapidly. Good. As long as we are going someplace new, I want to travel there as fast as possible.
4
5June2201 I awakened in the middle of
I last night after hearing a
persistent knocking sound coming from the direction of the vertical corridor in our lair. Even though the normal noise level from the constant shaking is substantial, Richard and I could both clearly hear the pounding without any difficulty. After checking Simone�she was still comfortably sleeping in her cradle now mounted on Richard's makeshift shock absorbers�we walked cautiously over to the vertical corridor.
The knocking grew louder as we climbed the stairs
toward the grill mat protects us from unwantethe pencild visitors.
At one landing Richard leaned over and whispered to me
that it "must be MacDuff knocking at the gate" and that
our "evil deed" would soon be discovered. I was too
, tense to laugh. When we were still several meters below
"/�the grill, we saw a large moving shadow projected on the
# wall in front of us. We stopped to study it. Both Richard
; and I realized immediately that our outside lair cover was
| open�there was daylight topside in Rama at the time�
28
ARTHUR C. CLARKE AMD-GENTRY LEE
THE GARDEN OF RAMA
29
and that the Raman creature or biot responsible for the knocking was creating the bizarre shadow on the wall.
I instinctively clutched Richard's hand. "What in the world is it?" I wondered out loud.
"It must be something new," Richard said very softly.
I told him that the shadow resembled an old-fashioned oil pump going up and down in the middle of a producing field. He grinned nervously and agreed.
After waiting for what must have been five minutes and neither seeing nor hearing any change in the rhythmic knocking pattern of the visitor, Richard told me mat he was going to climb to the grill, where he would be able to see something more definitive than a shadow. Of course that meant that whatever was outside beating on our door would also be able to see him, assuming that it had eyes or an approximate equivalent. For some reason I remembered Dr. Takagishi at that moment, and a wave of fear swept through me. I kissed Richard and told him not to take any chances.
When Richard reached the final landing, just above where I was waiting, his body was partially in the light and blocked the moving shadow. The knocking suddenly stopped abruptly. "It's a biot, all right," Richard shouted. "It looks like a praying mantis with an extra hand in the middle of its face. . . . And now it's opening the grill," he added a second later.
Richard jumped off the landing and was beside me in an instant. He grabbed my hand and we raced down several flights of stairs together. We didn't stop until we were back on our living level several landings below.
We could hear the sound of motion above us. "There was another mantis and at least one bulldozer biot behind the first mantis," Richard said breathlessly. "As soon as they saw me they started removing the grill. . . . Apparently they were just knocking to alert us to their presence.''
"But what do they want?" I asked rhetorically. The noise above us continued to grow. "It sounds like an army," I remarked.
Within seconds we could hear them moving down the
stairs. "We must be prepared to run for it," Richard said frantically. "You get Simone and I'll wake Michael."
We moved swiftly down the corridor toward our living area. Michael had been awakened already by all the noise, and Simone was stirring as well. We huddled together in our main room, sitting on the shaking floor opposite the black screen, and waited for the alien invaders. Richard had prepared a keyboard request for the Ramans that would, upon the input of two additional commands, cause the black screen to lift up just as it did when our unseen benefactors were about to supply us with some new product. "If we are attacked," Richard said, "we'll take our chances in the tunnels behind the screen."
Half an hour passed. From the hubbub in the direction of the stairs we could tell that the intruders were already on -our level in the lair, but none of them had yet entered the passage toward our living area. After another fifteen minutes curiosity overpowered my husband. "I'll go check out the situation," Richard said, leaving Michael with me and Simone.
He returned in less than five minutes. "There are fifteen, maybe twenty of them," he told us with a puzzled frown. "Three mantises altogether, plus two different types of bulldozer biots. They seem to be building some-tiling on the opposite side of.the lair."
Simone had fallen asleep again. I put her in the cradle and then followed the two men toward the noise. When we reached the circular area where the stairs climb toward the opening to New York, we encountered a maelstrom of activity. It was impossible to follow all the work being .done on the opposite side of the room. The mantises appeared to be supervising the bulldozer biots as they were widening a horizontal corridor on the other side of the circular room.
"Does anybody have any idea what they are doing?" Michael asked in a whisper.
"Not a clue," Richard replied at the time.
It is almost twenty-four hours later now and it is still not clear exactly what the biots are building. Richard thinks that the corridor expansion has been made to ac-
30 ARTHUR C. CLARKE AND GENTRY LEE
commodate some kind of a new facility. He has also suggested that all this activity almost certainly has something to do with us, for it is, after all, being done in our lair.