A man flying a hot air balloon realises he's lost...
He spots a man down below, so he shouts: "Excuse me. Can you help me? I promised my friends I'd meet them half an hour ago, but I don't know where I am."

The man replies: "Yes, you are hovering at approximately 30ft above this field."
"You are between 40 & 42 degrees N, latitude, and between 58 & 60 degrees W, longitude."

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

"Well," says the balloonist, "everything you have told me is technically correct, but I have no idea what it means and I am still lost."

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

"Well," says the man below, "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 that you are in exactly the same position as you were before we met.
- But now somehow it's my fault."