"I do not fall!" howled Adam. "I do not fall, you stupid Brute!"

Goat held up a stern hand, enforcing silence.

"I can't certainly settle this disagreement, but I'd be inclined to accept what Brute says," said Goat thoughtfully. "You're smart enough to lie, Adam. Brute isn't. The only thing I can do is to run the experiment over. You shall go out again tomorrow, and this time I'll go with you."

"You'll see, father," said Adam confidently. "Adam will not fall."

"Perhaps not. But I must be sure. As much as I prefer your more human characteristics, Adam, it's entirely possible that Brute has some survival qualities that you lack."

"Is true, father," said Brute eagerly. "Some things kill Adam, they not kill Brute."

"You lie!" cried Adam again, turning on him. "Why do you lie, Brute?"

"No lie," insisted Brute. "You know, is true."

"Lie! Lie!" shouted Adam. "Adam is bigger and stronger! What do you say can kill Adam that does not kill Brute?"

"This," replied Brute calmly.