A man in a hot air balloon realized he was lost. He reduced altitude and spotted a man below.
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're in a hot air balloon hovering approximately 30 feet above the ground. You're between 40 and 41 degrees north latitude and between 59 and 60 degrees west longitude."
"You must be a rabbi," said the balloonist.
"I am," replied the man, "How did you know?"
"Well," answered the balloonist, "everything you told me is technically correct, but completely irrelevant…”