"Hold on," I interrupted. "I'm none too convinced of it now."
"I said just that, last night. However, you think that there is some grain of truth to it. You would be a fool to laugh at the many experiments in clairvoyance carried on at Duke University."
"Yes, they are impressive," I admitted.
"They are tremendous, and by no means unique," he insisted. "Think of a number between one and ten," he said suddenly.
I gazed at my hands on the wheel, thought of a joking reply, then fell in with his mood.
"All right," I replied. "I'm thinking of a number. What is it?"
"It is seven," he cried out at once, then laughed heartily at the blank look on my face.
"Look here, that's a logical number for an average man to think of," I protested. "You relied on human nature, not telepathy."
He grinned and tweaked the end of his beard between manicured fingers. "Very good, Wills, try again. A color this time."
I paused a moment before replying, "All right, guess what it is."