A man is flying in a hot air balloon and realizes he is
 lost. He reduces altitude and spots a man down below.
 He lowers the balloon further and shouts, "Excuse me, can
 you help me? I promised my friend I would meet him
 half an hour ago, but I don't know where I am."
 The man below says, "Yes, you are in a hot-air balloon,
 hovering approximately 30 feet above this field. You
 are between 40 and 42 degrees N. latitude, and between
 58 and 60 degrees W. longitude."

 "You must be an engineer!" says the balloonist.
 "I am," replies the man. "How did you know?"

 "Well," says the balloonist, "everything you told me
 is technically correct, but I have no idea what to make
 of your information,  and the fact is I am still lost."

 The man below says, "You must be a manager!"
 "I am," replies the balloonist, "but how did you know?"

 "Well," says the engineer, "you don't know where you
 are, or where you are going. You have made a promise, which
 you have no idea how to keep, and you expect me to solve
 your problem. The fact is you are in the exact same
 position you were in before we met, but now it is somehow
 my fault!"