This is an old computer joke. I've seen it several places. A computer salesman accosts a potential customer and tells about his computer that has all knowledge, or can figure out everything. The customer gives it a trial. "Where is my father."
Computer: This man's father is lying on a beach in Miami, Florida.
Customer: Hah! This computer's worthless. My father's been dead five years.
Salesman: You have to be precise in the question you ask. [To computer] This man, where is his mother's husband?
Computer: His mother's husband has been dead five years.
Salesman: See?
Computer (continuing): His father is on a beach in Miami.
Okay, here's one version of the joke, I came up with several years ago, in the context of criminal procedure:
Customer: Where is my wife's killer?
Computer: Your wife's killer is in Lubbock hacking a woman to death at this moment.
Customer: Hah! This computer's worthless. My wife's killer was executed five months ago.
Salesman: You have to be precise in the questions you ask. [To Computer] Where is the man convicted of the murder of this man's wife?
Computer: The man convicted of the murder was executed five months ago. His wife's murderer is in Lubbock, having just finished hacking a woman to death.
Here's another version of the joke, that I just recently came up with (today):
Customer: When did UA175 take off on September 11, 2001?
Computer: UA175 took off at 8:23 AM that day.
Customer: This computer is worthless. The 9/11 Commission, the NTSB studies, and all the evidence point toward an 8:14 AM takeoff time.
Salesman: You have to be precise in your questions. [To computer] When did the plane that hit the South Tower take off?
Computer: The plane that hit the South Tower took off at 8:14 on September 11, 2001.
Salesman: See?
Computer (continuing): UA175 took off at 8:23 that date.
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