"Holy shit," Tim said.

"It was so fast," Ellie said.

"Pack hunters," Grant said, shaking his head. "Pack hunters for whom ambush is an instinct… Fascinating."

"I wouldn't call them tremendously intelligent," Malcolm said.

On the other side of the fence, they heard snorting in the palm trees. Several heads poked slowly out of the foliage. Grant counted three… four… five… The animals watched them. Staring coldly.

A black man in coveralls came running up to them. "Are you all right?"

"We're okay," Grant said.

"The alarms were set off." The man looked at the fence, dented and charred. "They attacked you?"

"Three of them did, yes."

The black man nodded. "They do that all the time. Hit the fence, take a shock. They never seem to mind."

"Not too smart, are they?" Malcolm said.

The black man paused. He squinted at Malcolm in the afternoon light, "Be glad for that fence, senor, " he said, and turned away.

From beginning to end, the entire attack could not have taken more than six seconds. Grant was still trying to organize his impressions. The speed was astonishing-the animals were so fast, he had hardly seen them move.

Walking back, Malcolm said, "They are remarkably fast."

"Yes," Grant said. "Much faster than any living reptile. A bull alligator can move quickly, but only over a short distance-five or six feet. Big lizards like the five-foot Komodo dragons of Indonesia have been clocked at thirty miles an hour, fast enough to run down a man. And they kill men all the time. But I'd guess the animal behind the fence was more than twice that fast."

"Cheetah speed," Malcolm said. "Sixty, seventy miles an hour."

"Exactly."

"But they seemed to dart forward," Malcolm said. "Rather like birds."

"Yes." In the contemporary world, only very small mammals, like the cobra-fighting mongoose, had such quick responses. Small mammals, and of course birds. The snake-hunting secretary bird of Africa, or the cassowary. In fact, the velociraptor conveyed precisely the same impression of deadly, swift menace Grant had seen in the cassowary, the clawed ostrich-like bird of New Guinea.

"So these velociraptors look like reptiles, with the skin and general appearance of reptiles, but they move like birds, with the speed and predatory intelligence of birds. Is that about it?" Malcolm said.

"Yes," Grant said. "I'd say they display a mixture of traits."

"Does that surprise you?"

"Not really," Grant said. "It's actually rather close to what paleontologists believed a long time ago."

When the first giant bones were found in the 1820s and 1830s, scientists felt obliged to explain the bones as belonging to some oversize variant of a modern species. This was because it was believed that no species could ever become extinct, since God would not allow one of His creations to die.

Eventually it became clear that this conception of God was mistaken, and the bones belonged to extinct animals. But what kind of animals?

In 1842, Richard Owen, the leading British anatomist of the day, called them Dinosauria, meaning "terrible lizards." Owen recognized that dinosaurs seemed to combine traits of lizards, crocodiles, and birds. In particular, dinosaur hips were bird-like, not lizard-like. And, unlike lizards, many dinosaurs seemed to stand upright. Owen imagined dinosaurs to be quick-moving, active creatures, and his view was accepted for the next forty years.

But when truly gigantic finds were unearthed-animals that had weighed a hundred tons in life-scientists began to envision the dinosaurs as stupid, slow-moving giants destined for extinction. The image of the sluggish reptile gradually predominated over the image of the quick-moving bird. In recent years, scientists like Grant had begun to swing back toward the idea of more active dinosaurs. Grant's colleagues saw him as radical in his conception of dinosaur behavior. But now he had to admit his own conception had fallen far short of the reality of these large, incredibly swift hunters.

"Actually, what I was driving at," Malcolm said, "was this: Is it a persuasive animal to you? Is it in fact a dinosaur?"

"I'd say so, yes."

"And the coordinated attack behavior…"

"To be expected," Grant said. According to the fossil record, packs of velociraptors were capable of bringing down animals that weighed a thousand pounds, like Tenontosaurus, which could run as fast as a horse. Coordination would be required.

"How do they do that, without language?"

"Oh, language isn't necessary for coordinated hunting," Ellie said. "Chimpanzees do it all the time. A group of chimps will stalk a monkey and kill it. All communication is by eyes."

"And were the dinosaurs in fact attacking us?"

"Yes."

"They would kill us and eat us if they could?" Malcolm said.

"I think so."

"The reason I ask," Malcolm said, "is that I'm told large predators such as lions and tigers are not born man-eaters. Isn't that true? These animals must learn somewhere along the way that human beings are easy to kill. Only afterward do they become man-killers."

"Yes, I believe that's true," Grant said.

"Well, these dinosaurs must be even more reluctant than lions and tigers. After all, they come from a time before human beings-or even large mammals-existed at all. God knows what they think when they see us. So I wonder: have they learned, somewhere along the line, that humans are easy to kill?"

The group fell silent as they walked.

"In any case," Malcolm said, "I shall be extremely interested to see the control room now."

"Was there any problem with the group?" Hammond asked.

"No," Henry Wu said, "there was no problem at all."

"They accepted your explanation?"

"Why shouldn't they?" Wu said. "It's all quite straightforward, in the broad strokes. It's only the details that get sticky. And I wanted to talk about the details with you today. You can think of it as a matter of aesthetics."

John Hammond wrinkled his nose, as if he smelled something disagreeable. "Aesthetics?" he repeated.

They were standing in the living room of Hammond's elegant bungalow, set back among palm trees in the northern sector of the park. The living room was airy and comfortable, fitted with a half-dozen video monitors showing the animals in the park. The file Wu had brought, stamped ANIMAL DEVELOPMENT: VERSION 4.4, lay on the coffee table.

Hammond was looking at him in that patient, paternal way. Wu, thirty-three years old, was acutely aware that he had worked for Hammond all his professional life. Hammond had hired him right out of graduate school.

"Of course, there are practical consequences as well," Wu said. "I really think you should consider my recommendations for phase two. We should go to version 4.4."

"You want to replace all the current stock of animals?" Hammond said.

"Yes, I do."

"Why? What's wrong with them?"

"Nothing," Wu said, "except that they're real dinosaurs."

"That's what I asked for, Henry," Hammond said, smiling. "And that's what you gave me."

"I know," Wu said. "But you see…" He paused. How could he explain this to Hammond? Hammond hardly ever visited the island. And it was a peculiar situation that Wu was trying to convey. "Right now, as we stand here, almost no one in the world has ever seen an actual dinosaur. Nobody knows what they're really like."

"Yes…"

"The dinosaurs we have now are real," Wu said, pointing to the screens around the room, "but in certain ways they are unsatisfactory, Unconvincing. I could make them better."

"Better in what way?"

"For one thing, they move too fast," Henry Wu said. "People aren't accustomed to seeing large animals that are so quick. I'm afraid visitors will think the dinosaurs look speeded up, like film running too fast."

"But, Henry, these are real dinosaurs. You said so yourself."

"I know," Wu said. "But we could easily breed slower, more domesticated dinosaurs."

"Domesticated dinosaurs?" Hammond snorted. "Nobody wants domesticated dinosaurs, Henry. They want the real thing."

"But that's my point," Wu said. "I don't think they do. They want to see their expectation, which is quite different."

Hammond was frowning.

"You said yourself, John, this park is entertainment," Wu said. "And entertainment has nothing to do with reality. Entertainment is antithetical to reality."

Hammond sighed. "Now, Henry, are we going to have another one of those abstract discussions? You know I like to keep it simple. The dinosaurs we have now are real, and-"

"Well, not exactly," Wu said. He paced the living room, pointed to the monitors. "I don't think we should kid ourselves. We haven't re-created the past here. The past is gone. It can never be re-created. What we've done is reconstruct the past-or at least a version of the past. And I'm saying we can make a better version."

"Better than real?"

"Why not?" Wu said. "After all, these animals are already modified. We've inserted genes to make them patentable, and to make them lysine dependent. And we've done everything we can to promote growth, and accelerate development into adulthood."

Hammond shrugged. "That was inevitable. We didn't want to wait. We have investors to consider."

"Of course. But I'm 'ust saying, why stop there? Why not push ahead to make exactly the kind of dinosaur that we'd like to see? One that is more acceptable to visitors, and one that is easier for us to handle? A slower, more docile version for our park?"

Hammond frowned. "But then the dinosaurs wouldn't be real."

"But they're not real now," Wu said. "That's what I'm trying to tell you. There isn't any reality here." He shrugged helplessly. He could see he wasn't getting through. Hammond had never been interested in technical details, and the essence of the argument was technical. How could he explain to Hammond about the reality of DNA dropouts, the patches, the gaps in the sequence that Wu had been obliged to fill in, making the best guesses he could, but still, making guesses, The DNA of the dinosaurs was like old photographs that had been retouched, basically the same as the original but in some places repaired and clarified, and as a result-