"I think I get the point," Miss Fellowes said primly, regretting now that she had led the discussion in this direction in the first place. "But I asked you before, when you showed me the dinosaur, why it was that moving something in and out of time doesn't change history. I understand now that the professor wouldn't have been able to start a family in the Pliocene, but if you sent someone back in time to an era when there were actual human beings-say, twenty thousand years ago-"
Hoskins looked thoughtful. "Well, then, there'd be some minor disruption of the time-line, I suppose. But I don't think there'd be anything big."
"So you simply can't change history using Stasis?"
"Theoretically, yes, you can, I suppose. Actually, except in really unusual cases, no. We move objects out of Stasis all the time. Air molecules. Bacteria. Dust. About ten per cent of our energy consumption goes to make up micro-losses of that sort. But even moving large objects in time sets up changes that damp out. Consider Adamew-ski's chunk of chalcopyrite from the Pliocene. During the two weeks it was up here in our time, let's say, some insect that might have taken shelter under it couldn't find it, and was killed. That could initiate a whole series of changes along the time-line, I imagine. But the mathematics of Stasis indicates that it would be a converging series. The amount of change tends to diminish with time and eventually things return to the track they would have followed all along."
"You mean, reality heals itself?"
"In a manner of speaking. Yank a human being out of the past, or send one back, and you make a larger wound. If the individual is an ordinary one, that wound would still heal itself-that's what the calculations show. Naturally there are a great many people who write to us every day and want us to bring Abraham Lincoln into the present, or Mohammed, or Alexander the Great. Well, we don't have the technical ability to do that just yet, not that we'd be likely to if we could. But even if we could cast our net such a short distance into the past, and were able to locate a specific human being such as the three 1 named, the change in reality involved in moving one of the great molders of history would be too huge to be healed. There are ways of calculating when a change is likely to be too great, and we make sure that we don't come anywhere near that limit."
Miss Fellowes said, "Then Timmie-" "No, he doesn't present any problems of that sort. One small boy who belonged to a human subspecies that was destined to die out in another five or ten thousand years is hardly going to be a history-changer because we've brought him forward to our era. Reality is safe." Hoskins gave her a quick, sharp glance. "You don't need to worry about it."
"I'm not. I'm just trying to understand how things work around here." "Which I applaud."
Miss Fellowes took a long deep sip of her buttermilk. "If there wasn't any historical risk in bringing one Neanderthal child into our time, then it would be possible to bring another one eventually, wouldn't it?"
"Of course. But one is all we'll need, I imagine. If Timmie helps us learn everything that we want to-"
"I don't mean to bring another one here for purposes of research. I mean as a playmate for Timmie." "What?"
It was a concept diat had burst into her mind as suddenly and unexpectedly as the name "Timmie" itself had-an impulse, a spontaneous thing. Miss Fellowes was astonished at herself for having brought it up.
But she pursued it, now that it was here.
"He's a normal, healthy child in every way, so far as I can see. A child of his time, of course. But in his own way I think he's outstanding."
"I certainly think so too, Miss Fellowes."
"His development from here on, though, may not continue normally."
"Why not?" Hoskins asked.
"Any child needs stimulation and this one lives a life of solitary confinement. I intend to do what I can, but I can't replace an entire cultural matrix. What I'm saying, Dr. Hoskins, is that he needs another boy to play with."
Hoskins nodded slowly. "Unfortunately, there's only one of him, isn't there? Poor child."
Miss Fellowes watched him shrewdly, hoping that she had picked the right moment for this.
"If you could bring a second Neanderthal forward to share his quarters with him-"
"Yes. That would be ideal, Miss Fellowes. -But of course it can't be done."
"It can't?" said Miss Fellowes, with sudden dismay.
"Not with the best will in the world, which I like to think is what we have. We couldn't possibly expect to find another Neanderthal close to his age without incredible luck-it was a very sparsely populated era, Miss Fellowes; we can't just dip casually into the Neanderthal equivalent of a big city and snatch a child-and even if we could, it wouldn't be fair to multiply risks by having another human being in Stasis."
Miss Fellowes put down her spoon. Heady new ideas were flooding into her mind. She said energetically, "In that case, Dr. Hoskins, let me take a different tack. If it's impossible to bring another Neanderthal child into the present, so be it. I'm not even sure I could cope with a second one, anyway. But what if- a little later, once Timmie is better adapted to modern life - what if we were to bring another child in from the outside to play with him?"
Hoskins stared at her in concern. "A human child?"
"Another child," said Miss Fellowes, with an angry glare. "Timmie is human."
"Of course. You know what I meant. - But I couldn't dream of such a thing."
"Why not? Why couldn't you? I don't see anything wrong with the idea. You pulled that child out of time and made him an eternal prisoner. Don't you owe hint something? Dr. Hoskins, if there is any man who, in this present-day world, can be considered that child's father - in every sense but the biological - it's you. Why can't you do this litde thing for him?"
Hoskins said, "His father?" He rose, somewhat unsteadily, to his feet. "Miss Fellowes, I think I'll take you back now, if you don't mind."
They returned to the dollhouse that was Stasis Section One in a bleak silence that neither broke.
As he had promised, Mclntyre sent over a stack of reference works that dealt with Neanderthals. Miss Fellowes plunged into them as if she were back at nursing school and a critical exam was coming up in a couple of days.
She learned that the first Neanderthal fossils had been discovered in the middle of the nineteenth century by workmen digging in a limestone quarry near Diisseldorf, Germany, at a place called the Neander Valley - Neandtr-thal, in German. While cleaning away the mud that covered a limestone deposit in a grotto sixty feet above the valley floor, they came across a human skull embedded in the grotto floor, and other bones not far away.
The workmen gave the skull and a few of the other bones to a local high school teacher, who took them to Dr. Hermann Schaafhausen of Bonn, a well-known anatomist. Schaafhausen was startled by their strangeness. The skull had many human features, but it was curiously primitive in appearance, long and narrow, with a sloping forehead and an enormous bony ridge bulging above the brows. The thighbones that accompanied the skull were so thick and heavy that they scarcely looked human at all.
But Schaafhausen did think the Neanderthal bones were human relics-extremely ancient ones. In a paper he read at a scientific meeting early in 1857, he termed the unusual fossils "the most ancient memorial of the early inhabitants of Europe."
Miss Fellowes looked up at Timmie, who was playing with some toy on the far side of the room.
"Listen to that," she said. " 'The most ancient memorial of the earfy inhabitants of Europe.' That's one of your relatives he's talking about, Timmie."
Timmie didn't seem impressed. He uttered a few indifferent clicks and went back to his game.
Miss Fellowes read on. And quickly the book confirmed what she already vaguely knew: that the Neanderthal people, while certainly ancient inhabitants of Europe, were far from being the most ancient ones.
The discovery of the original Neanderthal fossils had been followed, later in the nineteenth century, by similar discoveries in many other parts of Europe-more fossilized bones of prehistoric human-like creatures with sloping foreheads, huge beetling brows, and-another typical characteristic-receding chins. Scientists debated the meaning of these fossils, and, as Darwin's theories of evolution came to gain wide acceptance, general agreement developed that the Neanderthal-type specimens were the remains of a brutish-looking prehistoric kind of human being, ancestral to modern humanity, perhaps midway on the evolutionary scale between apes and humans.