One day in line at the company cafeteria, Ron says to John behind him, "My elbow hurts like hell. I guess I better see a doctor." Listen, you don't have to spend that kind of money", John replies. There's a diagnostic computer down at Wal-Mart. Just give it a urine sample and the computer will tell you what's wrong and what to do about it. It takes ten seconds and costs ten dollars, a lot cheaper than a doctor." So Ron deposits a urine sample in a small jar and takes it to Wal-Mart. He deposits ten dollars and the computer lights up and asks for the urine sample. He pours the sample into the slot and waits. Ten seconds later, the computer ejects a printout: "You have tennis elbow. Soak your arm in warm water and avoid heavy activity. It will improve in two weeks." Thank you for shopping @ Wal-Mart. That evening while thinking how amazing this new technology was, Ron began wondering if the computer could be fooled. He mixed some tap water, a stool sample from his dog, urine samples from his wife and daughter, and his sperm sample for good measure. Ron hurries back to Wal-Mart, eager to check the results. He deposits ten dollars, pours in his concoction, and awaits the results. The computer prints the following: 1. Your tap water is too hard. Get a water softener. (Aisle 9) 2. Your dog has ringworm. Bathe him with anti-fungal shampoo. (Aisle 7) 3. Your daughter has a cocaine habit. Get her into rehab. 4. Your wife is pregnant. Twins. They aren't yours! Get a lawyer! 5. If you don't stop playing with yourself, your elbow will never get better. Thank you for shopping @ Wal-Mart.