A man was meeting a friend in a pub for a pint, he decided to go by hot air balloon. So he took off; but, very soon climbed above the clouds and after a little while he realised he was lost. He reduced his altitude below the clouds and spotted somebody below walking across the centre of a large wheat field. He descended a bit more and shouted, "Excuse me, can you help me? I promised a friend I would meet him an hour ago, but I don't know where I am."
The man below replied, "You are in a hot air balloon hovering approximately 30 feet above the ground. You are between latitude 50 and 51 degrees north and between longitude 00 and 01 degrees west."
"You must be an engineer," said the balloonist.
"I am," replied the man, "how did you know?"
“Well," answered 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. Frankly, you've not been much help so far."
The man below responded, "You must be a manager."
"I am," replied the balloonist, "but how did you know?"
"Well," said the man, "you don't know where you are or where you are going. You have risen to where you are due to a large quantity of hot air. You 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 exactly the same position you were in before we met, but now, somehow, it's my fault."