"Maybe another way of saying the same thing," Elizabeth said. "The experiment with the jar, for example, seemed to indicate that the people in a particular universe did manage to alter their own past. But the model still doesn't explain that fully; it only half explains it."
"How's that?" Murdoch asked, looking surprised. "I thought we covered it okay."
Elizabeth shook her head. "Let's imagine somebody decides to change something in his past, in other words something he remembers," she said. "So he sends a signal back that resets the timeline and remains imprinted upon the fabric of the new timeline that it creates instead. Because of information contained in the signal, the something that was to be changed is changed, and the new somebody who is formed on that timeline perceives nothing that requires changing. Hence our original premise—that he began by deciding to change something—becomes untenable. So how and when did the signal ever come to be sent to begin with? Or to be a little more specific, how did the people who sent the signal about the jar manage not to receive the signal when they were at the time you were at when you received it? Either a signal was or was not received at that time. If it was, why didn't they receive it; if it wasn't, how did you?"
Murdoch swung his head round to look at Charles. Charles thought for a while and nodded slowly. "She's right," he murmured.
"In the model, causes and effects remain as we would normally define them," Elizabeth went on. "But instead of being simply related in sequence along a unidirectional timeline, they exist on a complicated loop that takes place in time. The loop makes the whole thing an impossible situation, at least it does if the loop is postulated as a permanent feature of the model like the threads. It can't be always there, but the model doesn't explain how it can come and go."
"You mean the model needs to be dynamic," Cartland said.
Elizabeth nodded decisively. "Yes, dynamic. That was what I meant when I said I was bothered about it being static as it is." She picked up her spoon at last and looked at Charles before returning her attention to her meal. "As I said, I think you're on the right track. But we need to add something that will give free will and random influences a chance to operate—something that injects an element of uncertainty into the whole process. The loops must be allowed to appear and disappear dynamically."
"Something like a quantum dynamics of spacetime," Murdoch remarked.
"Yes, something very much like that," Elizabeth agreed. "We need to extend quantum uncertainty, or something very like it, throughout the whole continuum of universes. When the model includes that, I think it will be getting extremely close indeed."
Chapter 9
On Saturday morning they ran tests to try out a few ideas that had occurred to Charles. In the course of the experiments they communicated several more times with future versions of themselves who they did not subsequently evolve into. Although these tests were simple in nature and far removed from the rigorous experiments that Charles was planning, they seemed to support the general form of the model discussed over dinner the night before. The experience of witnessing evidence of a small part of the universe being wiped out and re-formed into something else was still strange to say the least, but by lunchtime, such being the adaptability of human nature, it was no longer disconcerting.
The range of the machine had by then been extended to twenty-four hours as Charles and Cartland had predicted, and some of the signals coming in were from well beyond the ten-minute limit that had previously been the maximum. To avoid the possibility of missing anything that might be important, they decided to leave the machine switched on and running permanently, thus establishing an always-open "line" to receive and record automatically anything that the inhabitants of the universes ahead of them in time might have to say. Since the message capacity had also been extended well beyond the previous six-character limit as part of the modifications, there was now room to accommodate significant amounts of information from the mysterious future universes.
Elizabeth decided, without much coercion, to extend her stay until Sunday night. This gave Murdoch and Lee an opportunity to make a trip into Kingussie, the town about fifteen miles away where they had turned off the Perth-Inverness road on their way from Edinburgh, something they had been wanting to do for over a week but had put off. Murdoch had made up a list of things he needed that were not available in the village, and Lee wanted to buy some warmer clothing; he had not taken full account of the Scottish winter before leaving California. After lunch, therefore, they bade farewell for the afternoon and left Charles, Cartland, and Elizabeth to continue yet another seemingly interminable discussion in the library. They stopped in the vestibule just inside the main doors to put on their coats. Fascinating though the work was, the thought of taking a break was nice, and they were in high spirits.
"I can't say I'll be sorry to get out into some fresh air," Murdoch said. "It looks like a nice day for a drive."
"Suits me," Lee agreed.
Murdoch moved ahead and swung open one of the heavy wooden doors. He paused and drew in a deep lungful of air. "Mmm, smells nice and fresh. Blue sky again at last."
"Watch it doesn't give you oxygen poisoning," Lee said, pausing just behind him to light a cigarette. Murdoch grinned and went on down the steps while Lee stood there for a second to draw the cigarette into life in his cupped hand, at the same time holding the door partly open with his elbow. Down near the floor behind him, an inquisitive black-and-white face poked itself from between Charles's overshoes and the umbrella stand. Lee pocketed his lighter and let the door go to close as he began following a few paces behind Murdoch. Maxwell squeezed through the gap just before the door closed and tumbled unsteadily down the steps a few feet behind Lee's heels. The cat reached the car just as the door slammed above its face, and stood in the snow peering up with wide, bewildered eyes.
"All set?" Murdoch asked as Lee settled down in the seat beside him.
"Sure. How will we be for time? I figure maybe I could use a pint of that Scottish beer."
"No problem," Murdoch said as he started the engine. "I've only got a few—" He frowned suddenly. "Hell!"
"What's up?"
"We should have told Mrs. Paisley we might be a bit late. I'd better go back inside and fix it."
"I'll do it." Lee swung himself out of the car and headed back toward the steps, leaving the car door half open. Murdoch sat back to wait, and after a few seconds switched on the radio. The music was enough to mask the scratching noises of Maxwell scrambling in at the bottom of the passenger's door and worming his way under the seat toward the back of the car. A minute later Lee reappeared, climbed in, and closed the door.
"Okay," he said. "She'll leave us some sandwiches."
"Great. Let's go," Murdoch answered.
The car turned out of the forecourt and disappeared into the curve of the driveway, between the snow-crusted trees.
Kingussie was a quaint little town straddling what had been the main Perth-to-Inverness road before the opening of the bypass fifteen years before had rescued it from the automobile invasion of the twentieth century. Since then Kingussie had reverted to a picturesque jumble of narrow streets, haphazard buildings, and a few church spires that made a convenient stopping-off place for travelers on the nearby throughway to have a meal, shop for souvenirs, or simply browse along the main street's parade of shopfronts displaying everything from tartan plaids and Scottish woolens to skiing and mountain-climbing equipment.
The main street was busy with Saturday-afternoon shoppers making the best of the fine weather when Murdoch and Lee slowed to a halt just ahead of an empty space in the line of vehicles parked by the sidewalk. Murdoch backed the car into the space and cut the engine.
"They don't exactly have a surplus of parking lots in this town," Lee observed, looking around.
"What would you pull down to make some more?" Murdoch asked him.
"Mmm, okay, point taken. Where to first?"
"Well, if you still want a beer, why don't we do that
now. Then we won't have to carry lots of junk all over town. There's a place you'd like just around the corner, all oak beams and stuff. Must be three hundred years old."
"Sounds fine."
Murdoch climbed out into the road and closed the car door. Lee opened the door on the other side, then paused for a moment to check his pockets for the list of things he needed to buy. In a flash, Maxwell slipped out and vanished between the underside of the car and the curb. A few seconds later his nose poked out from behind the rear wheel as he surveyed the strange world of people and movement flowing by in front of him.
There was a lamppost near the edge of the sidewalk just a few feet from where the car was parked. Its base was hexagonal, and a crumpled ball of paper had lodged against one of the corners, carried there by the breeze. The ball of paper fluttered nervously in delicate equilibrium while a trillion molecules of air played thermodynamic roulette to decide the issue. Maxwell watched, his eyes widening slowly. The ball teetered precariously for an instant longer, then broke free from the lamppost and tumbled across the sidewalk.
Maxwell's first pounce missed by an inch. A split-second later he had gathered himself again and was streaking in pursuit after the erratically rolling ball as it veered into the doorway of one of the shops.
Murdoch was halfway around the car when a startled shriek, coinciding with an ear-rending S-Q-U-A-W-K, stopped him dead in his tracks. At the same time Lee, who was just straightening up from closing the door on the other side of the car, spun around. They were just in time to see a girl who was coming out of one of the shops with an armful of packages stumble over something and drop most of the bags. The bundle of fur that disentangled itself from her feet and fled into the crowd was unmistakable.
"Oh, shit!" Murdoch said miserably.
"Jesus, it's Maxwell!" Lee yelled. "He's taken off! Check the damage, Doc. I'll go get him." With that he plunged away into the throng, plowing a swath through the ranks of startled onlookers.
"What is it, Maggie?" a woman wailed in a high-pitched voice to her companion.
"They're Americans, I think" was the reply.
"Och, aye." A man nodded dourly to his wife, as if that adequately explained all.
It had all happened so quickly that the girl was still staring at the wreckage around her feet, and had made no move to recover the bags. Murdoch walked over and squatted down to begin collecting the spilled contents. He groaned inwardly at the sounds of tinkling glass that came from several of the boxes and paper bags, and braced himself for a tirade of abuse from above. But none came. Instead the girl squatted down opposite him and began gathering the rest of the items with calm, unhurried composure.
"Gee, I—I don't know what to say," Murdoch stammered. "We didn't even know he was there. Here, I'll take that. Oh hell, this one sounds like bad news."
"It can't be helped," the girl said simply. "Obviously it was nobody's fault. Was that your kitten?"
"Yes, I'm afraid so. He must have hitched a ride. We didn't know he was in the car."
"I do hope I didn't hurt him."
Her voice was as calm and controlled as her manner. It was a rich, melodious voice, carefully cultivated, and her accent was more English than Scottish, Murdoch thought. They straightened up, she holding the rest of the bags and he with his hands full of boxes and burst wrappings. He found himself looking at a face that was a classically oval composition of finely molded features built from lines that were clean and sharp but without any hint of harshness; it was framed by hair that fell in loose, dark waves to her shoulders. Her nose was straight, her mouth full, and her chin just pointed enough to be dainty without losing its softness. And the eyes—looking out from beneath long, dark lashes, which had to be real to suit the rest of the image—were dark, clear, and unwavering. They were infinitely deep, intelligent eyes—the kind that could take on expressions of their own to mirror the thoughts within or, with equal ease, remain aloof and inscrutable. She was dressed in a brown sheepskin coat whose hood was thrown back to reveal fleece inner lining, with matching knee-length boots of suede.
Murdoch realized that he had been staring for what was about to become an impertinently long time. "Oh, he'll be okay," he said. "He's young… Hasn't gotten around to using any of his nine lives yet." He motioned with his head at the items he was holding. "Look, ah… about this mess. Naturally I'll take care of the damage for you. Why don't we get off the street and find someplace where we can take stock."
"You don't have to," she replied. "If I had been looking where I was putting my feet, it would probably never have happened. I think the damage sounds worse than it is. There wasn't really a lot in there that could break."
"It sounded like you had a collection of chandeliers in there to me," Murdoch said dubiously. "Let's check it out anyhow. It'd sure make me feel a lot better."
Her mouth softened into a smile that seemed to come easily and naturally. "Very well. Thank you, that's very considerate." She turned her eyes away to gaze along the street. "What's happened to your friend? I hope he hasn't lost the kitten." As she said this, Lee came back into sight through the crowd, holding a squirming, protesting Maxwell clamped firmly inside the front of his jacket. At the same moment the door of the store opened, and a man came out bearing a worried expression. He was bald except for two patches of thin, gray hair smoothed down above his ears, and was carrying a pair of thick-rimmed spectacles in his hand. His dark suit worn without a topcoat said that he was not a customer; from his age, Murdoch guessed he was probably the store manager.
"That was a terrible piece of bad luck," the man said to them. "I saw the whole thing. Bring everything back inside now, and we'll have a look at what's broken. You weren't even off the premises, so there will be no problem in replacing it. We can always send the stuff back as damaged in transit."
"There's no reason why you should have to do that," Murdoch said. "Just replace whatever needs replacing and let me take care of it." The manager took some of the girl's packages and held the door open with his back as she turned to reenter the store. Lee bundled Maxwell onto the back seat of the car, slammed the door, and joined Murdoch a few steps behind her.
"I guess we're in trouble," Lee said.
"I don't think so," Murdoch told him as they walked over to the counter inside the door. "We seem to have picked a very understanding victim." He dumped the packages he had been holding down on the counter and turned toward the girl. "This is Lee, by the way. I'm Murdoch."
"Anne," she informed them. "I'm pleased to meet you both, even if the circumstances are a little unusual. I gather you're Americans."
"Both from California," Murdoch said.
"It's a strange time of year to visit your family," Anne remarked casually. "Most people would have done it the other way round—winter there and spend the summer in Scotland."
Murdoch's mouth fell open in surprise. "I didn't say anything about any family. How the hell… ?"
Anne gave a quick laugh, uncovering a row of perfect teeth. "Oh, just a lucky guess. With a name like Murdoch, you had to have some Scottish blood in you. And Lee is still wearing summery clothes, which says you haven't been here very long."
"Good grief!" Murdoch exclaimed, realizing as he said it that he had been adopting some of Cartland's expressions in the last few days. "What are you? Do you work for Scotland Yard or something?"
"Oh, nothing as exciting as that. I just notice things, I suppose."
Behind them the manager was examining the contents of the parcels, and every now and again pushing one of them aside with a sad shake of his head while he called out the design numbers to an assistant who began wrapping up the replacements.
"Are you from around here?" Murdoch inquired.
Anne shook her head. "I live at Nairn, north of here near Inverness. I'm just driving home from Edinburgh. Kingussie seemed a good place to stop for a snack and do some shopping."
"Have you had your snack yet?"
"Not yet."
"We were
just about to go for a drink. How about joining us? I think we owe you one."
Anne's brow furrowed slightly. "I couldn't face a drink at this time of day," she said. Murdoch decided it just wasn't his day. Then she added, "But a cup of tea and a sandwich would be very welcome. Could you stand that?"
"We'll take the risk," Murdoch said and grinned.
The manager finished adding up prices on a scrap of paper and cleared his throat to attract their attention. "Ah, are you sure you still want to pay for this, sir? Really, I'd be quite happy to write it all off as I said."
"We'll pick up the tab," Murdoch insisted. "What's the damage?"
"As you wish. It comes to thirty-four pounds and seventy pence. Will it be cash, credit, or on account?"
"AmEx okay?"
"Certainly."
"Here." Murdoch produced his card. The manager inspected it briefly then inserted it into a slot in the front of a small, desktop terminal on one end of the counter. A few seconds went by while a communications satellite high over the Atlantic redirected downward and westward a stream of binary code prefixed with the number of Murdoch's New York bank account.
"Are you enjoying your visit to Scotland, Mr. Ross?" the manager asked as the terminal's miniature screen came to life to validate the transaction.
"A lot, thanks."
"A grand Scottish name, I see. Would you be related to any of the Rosses in these parts?"
"My family's from near here—a place called Glenmoroch, over toward Loch Ness," Murdoch said.
The manager snatched his spectacles from his ear and looked up abruptly. "Not Sir Charles Ross of Storbannon?"
"Yes. He's my grandfather. You know him?"
"I most certainly do." The manager's voice warmed suddenly in surprise and evident delight. "There aren't many around here who don't know Sir Charles. Then you must be his grandson from America. It's not your first visit here either; I've heard about you from time to time." He extended a hand and shook Murdoch's firmly. "It's a pleasure to meet you at last. How long will you be staying?"
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