A balloonist had to find that he lost orientation. He sees a man on the ground, so lets the balloon sink and asks the man: “Excuse me! Can you help me? I had promised to a friend to meet him half an hour ago, but I don’t know where I am!”

The man on the ground replies: “No problem. You’re in a hot-air balloon, approximately twenty meters above the ground; between thirty-eight and thirty-nine degrees northern latitude and between hundred-and-eight degrees and hundred-and-nine degrees western longitude.”

The balloonist: “You must be an engineer!”

The man on the ground: “I am! But how do you know this?”

The balloonist: “Everything you said seems to be technically correct. But I don’t have a clue what to do with these pieces of information and I still don’t know where I am.”

The engineer: “You must be a manager!”

The balloonist: “I am! How do you know this?”

The engineer: “You know neither where you are nor where you are heading to. You made a promise without having a clue how to keep it. You expect that I solve this problem for you. In fact, you’re in the same situation as before we met! But somehow it’s my fault now.”