The lab technician says to him, "I'm sorry, sir, but there has been a
bit
of a mix-up and we have a problem. When we sent the samples from your
wife to the lab, the samples from another Mrs. Smith were sent as well
and we are now uncertain which one is your wife's. Frankly, it is either

bad or terrible!"

"What do you mean?" said Mr. Smith.

"Well, one Mrs. Smith has tested positive for Alzheimer's, and the other

Mrs. Smith has tested positive for AIDS. We can't tell which is your
wife."

That's terrible!" said Mr. Smith. "Can't we do the test over?"

Normally, yes. But the HMO won't pay for these expensive tests more than

once."

Well, what am I supposed to do now?" said Mr. Smith.