Mrs. Ward took her elderly husband to the doctor for some tests. The next week, she went back to the doctor's office to collect the test results. The lab tech says to her, "I'm sorry, ma'am, but there has been a big mix-up and we have a problem. When we sent your husband's samples to the lab, the samples from another Mr. Ward were sent as well, and we are now uncertain which one is your husband's. Frankly, it is either bad or terrible news." "What do you mean?" Mrs. Ward asked. "Well, one has tested positive for Alzheimer's and the other for AIDS. We can't tell which one is your husband." That's terrible! Can't we do the test over?" questioned Mrs. Ward. "Normally, yes. But Medicare won't pay for these expensive tests more than once." "Well, what am I supposed to do now?" said Mrs. Ward. "The people at Medicare recommend that you drop your husband off in the middle of town. If he finds his way home, don't sleep with him."