A young doctor moved to a small town to replace a retiring physician. The senior doctor suggested the newcomer accompany him on his rounds to help the community get acquainted.
At their first visit, a woman complained of an upset stomach. Without examining her, the older doctor advised, "You've probably been eating too much fresh fruit. Try cutting back."
Once outside, the young doctor asked, "You didn't even examine her. How did you diagnose her so quickly?"
"I didn't need to," replied the senior doctor. "Did you notice I dropped my stethoscope? When I bent to pick it up, I saw half a dozen banana peels in the trash. That was likely the cause."
"Clever," said the young doctor. "I'll try that at the next house."
At the next home, a woman lamented her constant fatigue and lack of energy.
"You're probably overworking for the church," the young doctor suggested. "Try reducing your commitments."
After they left, the elder doctor remarked, "Your diagnosis is likely correct, but how did you determine it?"
"Just like you," the young doctor replied. "I dropped my stethoscope. When I bent down to retrieve it, I saw the preacher under the bed."