from carpet to wooden floor, and grew louder. A second later the library door burst open, and Cartland hurtled through.
"What's happened?" he demanded at once, apparently speaking to nobody in particular. "What's it done?" He jerked his head around to take in the room and singled out Charles. "You said it works, Charles. What? What works? Is it still working now?"
Charles stood up and made vague slapping motions in the air with his hand until the stream of words stopped. "Och, calm down, Ted, for God's sake," he said. "Aye, it works. We'll show it to you right away. Now say hello to Murdoch and Lee."
Cartland's manner changed abruptly. He turned toward where Murdoch was rising to his feet, seized his hand, and began pumping it vigorously. "Murdoch! How are you, old boy? Delighted to see you again. Sorry about my appalling manners and all that. We don't get to see time machines working every day, you know."
"Hi, Ted," Murdoch said, grinning. "You haven't changed. This is Lee, my partner from California."
Lee stuck out a hand, and Cartland repeated the performance.
"Lee Walker, isn't it? I've heard all about you. Delighted. I've worked with all kinds of Americans in my time. Great bunch! Where are you from originally?"
"Japan."
"Good Lord!" Cartland blinked in surprise, then shifted his gaze back to Charles. "Charles, what's happened then? I've driven all the way from bloody Manchester on manual. Nearly broke my neck a dozen times. What's it done?"
Charles sighed. "Oh dear, it's obvious that we're not going to get any sense out o' you until you've seen for yourself," he said. "Come on then. Let's go down to the lab and get on with the demonstration." With that he led the way out of the library with Cartland tagging immediately behind. Lee caught Murdoch's eye for an instant as they turned to follow and frowned quizzically. Murdoch shrugged and returned a faint grin.
Cartland was in his early forties, athletically built, and had dark, slightly wavy hair that was just beginning to recede at the temples. He wore open-necked shirts around the house, usually with a sweater or a sports jacket, but never went out without a necktie. With his distinctive upper-crust English accent, neatly clipped moustache, and unfailing—at times almost schoolboyish—exuberance the man could never, Murdoch thought, have been anything but a former British military officer. He was the kind of person that Murdoch sometimes imagined Colonel James having been when at a comparable age in the 1920s. That had been almost a century before; however some traditions still changed only slowly.
In the lab, Charles began with a repeat-performance of the previous night's demonstration and obtained a similar result, this time with Cartland as the operator. Cartland was almost as amazed as Murdoch had been, despite his having virtually built the machine, and soon followed the same line of thought as Murdoch had by trying to fool the system with paradoxes. After about half an hour, a pattern essentially the same as that of the previous evening had established itself. At that point Cartland declared himself to be completely baffled. A discussion followed in which Murdoch and Lee expounded again the thoughts they had been developing since breakfast. Charles said little, evidently reserving an opinion until more hard data had been gathered. Eventually they ended up with Cartland shaking his head at the screen and looking nonplussed, Charles sitting at the desk beside him, and the other two standing behind.
"Well, this won't do," Cartland said. "We could talk about it all day, but it won't tell us any more. We're still no nearer getting to the bottom of it."
"What do you suggest?" Murdoch asked.
"I'm not sure really." Cartland frowned and rubbed his moustache pensively. "It's the human element that's causing all the trouble, isn't it? If we could eliminate that… " He lapsed into silence, then sat up. "I know. Let's do the same thing as we started with, but