The others stared at him, taken aback. Isobel said, "I beg your pardon?"

"Genocide," Crawford said bitterly. "We're doing here much what the white men did when they cleared the Amerinds from the plains, the mountains and forests of North America."

Isobel, Cliff and Jake frowned their puzzlement. Abe said, "Man, you just don't make sense. And, among other things, there're more Indians in the United States than there was when Columbus landed."

Crawford shook his head. "No. They're a different people. Those cultures that inhabited the United States when the first white men came, are gone." He shook his head as though soured by his thoughts. "Take the Sioux. They had a way of life based on the buffalo. So the whites deliberately exterminated the buffalo. It made the plains Indians' culture impossible. A culture based on buffalo herds cannot exist if there are no buffalo."

"I keep telling you, man, there's more Sioux now than there were then."

Crawford still shook his head. "But they're a different people, a different race, a different culture. A mere fraction, say ten per cent, of the original Sioux, might have adapted to the new life. The others beat their heads out against the new ways. They fought—the Sitting Bull wars took place after the buffalo were already gone—they drank themselves to death on the white man's firewater, they committed suicide; in a dozen different ways they called it quits. Those that survived, the ten per cent, were the exceptions. They were able to adapt. They had a built-in genetically-conferred self discipline enough to face the new problems. Possibly eighty per cent of their children couldn't face the new problems either and they in turn went under. But by now, a hundred years later, the majority of the Sioux nation have probably adapted. But, you see, the point I'm trying to make? They're not the real Sioux, the original Sioux; they're a new breed. The plains living, buffalo based culture, Sioux are all dead. The white men killed them."

Jake Armstrong was scowling. "I get your point, but what has it to do with our work here in North Africa?"

"We're doing the same thing to the Tuareg, the Teda and the Chaambra, and most of the others in the area in which we operate. The type of human psychology that's based on the nomad life can't endure settled community living. Wipe out the nomad way of life and these human beings must die."

Abe said, unusually thoughtful, "I see what you mean, man. Fish gotta swim, bird gotta fly—and nomad gotta roam. He flips if he doesn't."

Homer Crawford pursued it. "Sure, there'll be Tuareg afterward ... but all descended from the fraction of deviant Tuareg who were so abnormal—speaking from the Tuareg viewpoint—that they liked settled community life." He rubbed a hand along his jawbone, unhappily. "Put it this way. Think of them as a tribe of genetic claustrophobes. No matter what a claustrophobe promises, he can't work in a mine. He has no choice but to break his promise and escape ... or kill himself trying."