One day, Jeffrey complained to his friend, "My elbow really hurts, I guess I should see a doctor."
"Don’t do that! There’s a computer at the drug store that can diagnose anything, quicker and cheaper than a doctor. Simply put in a sample of your urine and the computer will diagnose your problem and tell you what you can do about it. It only costs $10."
Jeffery figured he had nothing to lose, so he took his urine sample to the drug store. Finding the computer, he poured in the sample and deposited the $10.00. The computer started making some noise and various lights started flashing. After a brief pause, out popped a small slip of paper on which was printed:
“You have tennis elbow.
Soak your arm in warm water.
Avoid heavy lifting.
It will be better in two weeks.”