She might well be dead. Was as good as dead, in any case, because she was hopelessly out of human reach forever. It was well known that this was so, from the fundamental laws of physics. . . but there were times, Essie was sure, when her husband did not believe it to be so.

And then she wondered: If there was any possibility of a choice between them, how would Robin choose?

And what if the laws of physics, after all, turned out to permit an exception now and then?

There was the matter of the Heechee ships, and how could one apply known physical law to them? As with every other thinking person in the world, the questions raised by the Heechee had intrigued S. Ya. for a long time. The Gateway asteroid had been discovered while she was still a schoolgirl. The headlines announcing new findings had come every few weeks, all through her college years. Some of her classmates had taken the plunge and specialized in the theory of Heechee control systems. Two were on Gateway now. At least three had shipped out and never returned.

The Heechee ships were not uncontrollable. They could in fact be controlled precisely. The superficial mechanics of the process were known. Each ship possessed five main-drive verfliers, and five auxiliaries. They located coordinates in space (how?), and, once set, the ship went there. Again, how? It then returned unerringly to its place of origin, or usually did, if it did not run out of fuel or encounter a mischance-a triumph of cybernetics that S. Ya. knew no human agency could reproduce. The difficulty was that until this very second no human being knew quite how to read the controls.

But what about the next second, or the one after that? With information pouring in, from the Food Factory and Heechee Heaven; with Dead Men talking; with at least one semicompetent human pilot, the boy, Wan-with all this, and especially with the flood of new knowledge that might be unlocked from the prayer fans. . .

How long before some of the mysteries were solved? Perhaps not very long at all.

S. Ya. wished she could be a part of it all, as her classmates had become. As her husband had become. She wished even more that she did not suspect what part he most wanted to play. But the suspicion remained. If Robin could make a Heechee ship fly him to any destination he chose in all the universe, she thought she knew what that destination would be.

Semya Yagrodna Lavorovna-Broadhead called to her secretary, “How much time do I have?”

The program appeared and said, “It is now five twenty-two. Dr. Liederman is expected at six forty-five. You will then be prepared for the procedure, which will occur at eight o’clock. You have a little more than an hour and a quarter. Perhaps you would like to rest?”

S. Ya. chuckled. It always amused her when her own programs offered her advice. She did not, however, feel any need to respond to it. “Have menus been prepared for today and tomorrow?” she asked.

“Nyet, gospozha.”

That was both a relief and a disappointment. At least Robin had not prescribed more fattening foods for today-or perhaps his prescription had been overruled, because of the operation? “Select something,” she ordered. The program was quite capable of preparing menus. It was only because of Robin himself that either of them ever gave a thought to such routine chores. But Robin was Robin, and there were times when cooking was a hobby for him, cutting onions paper-thin for a salad and standing to stir a stew for hours. Sometimes what he produced was awful, sometimes not; Essie was not critical, because she was not very interested in what she ate. And also because she was grateful that she felt no need to concern herself with such matters; in this respect, at least, Robin surpassed her father. “No, wait,” she added, struck with a thought. “When Robin comes home he will be hungry. Serve him a snack-those crullers, and the New Orleans coffee. As at the Cafe du Monde.”

“Da, gospozha.” How devious you are, thought Essie, smiling to herself. One hour and twelve minutes left.

It would do no harm to rest.

On the other hand, she was not sleepy.

She could, she thought, interrogate her medical program again. But she had no real wish to hear about the procedures she faced an additional time. Such large pieces to take from someone else’s body for the sake of her own! The kidney, yes. One might well sell that and still have something left. As a student, Essie had known comrades who had done that, might even have done it herself if she had been just a shade poorer than she actually was. But, although she knew very little more of anatomy than her father had taught her at his knee, she knew enough to be sure that the person, or persons, who had given her all those other tissues would not have enough left to go on living with. It was a queasy feeling.

Almost as queasy as that other feeling that came with knowing that, even with Full Medical, from this particular invasion of her person by Wilma Liederman’s knives she might not return.

Still an hour and eleven minutes.

Essie sat up once more. Whether she was to live or not, she was as dutiful a wife as she had been a daughter, and if Robin wished her to concern herself with prayer fans and Heechee she would. She addressed the computer terminal. “I wish the Albert Einstein program.”

12 Sixty Billion Gigabits

When Essie Broadhead said, “I wish the Albert Einstein program,” she set a large number of events in motion. Very few of these events were visible to the unaided senses. They did not take place in the macroscopic physical world, but in a universe composed largely of charges and pathways operating on the scale of the electron. The individual units were tiny. The total was not, being made up of some sixty billion gigabits of information.

At Akademogorsk, young S. Ya.’s professors had schooled her in the then current computer logics of ion optics and magnetic bubbles. She had learned to trick her computers into doing many marvelous things. They could find million-digit prime numbers or calculate the tides on a mud-flat for a thousand years. They could take a child’s scribble of “House” and “Daddy” and refine it into an engineer’s rendering of an architectural plan, and a tailor’s dummy of a man. They could rotate the house, add a sunporch, sheath it in stucco or cover it with ivy. They could shave off a beard, add a wig, costume the man for yachting or golfing, for boardroom or bar. These were marvelous programs for nineteen-year-old Semya. She found them thrilling. But she had grown since then. By comparison with the programs she was now writing, for her secretary, for “Albert Einstein” and for her many clients, those early ones were slow and stumbling caricatures. They did not have the advantage of circuits borrowed from Heechee technology, or of a circulating memory store of 6 X b’9 bits.

Of course, even Albert did not use all sixty billion gigabits all the time. For one thing, they were not all shared. Even the shared stores were occupied by tens of thousands of programs as subtle and complicated as Albert, and

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