The doctor was explaining to Paddy how nature makes up for a person’s deficiencies.
“For example,” he told Paddy, “if a man is deaf, he may have very good eyesight, and if a man is blind, he may have a very good sense of smell.”
“I think I see what you mean,” said Paddy. “I have often noticed that if a man has one short leg, then the other one is always a little bit longer.”