She faced him squarely and asked, "Have you figured it out?"
"I think so," he said coldly. "There are a couple of gaps yet which you can fill in."
"What makes you think I'll do it?"
"You'll do it," he said in a brittle voice. "For instance, what are you, real or artificial mutant?"
Her laugh was strained and cynical. "Brilliant!" she said. "Homo Superior, Charles."
"All right then, keep it clammed. But we'll find out."
"You haven't found out yet," she remarked pointedly.
"We didn't always have electric lamps, either."
Carolyn shook her head in a superior manner. "You did not discover this thing either," she said calmly. "You were shown most of it deliberately."
"Indeed?" His voice was sarcastic.