There was a group of people taking a sight seeing tour of the city in a helicopter, when all of a sudden, it became very foggy and the pilot could only see a few yards in front of the helicopter. At the same time, all the navigational instruments stopped working, so he couldn't tell which way it was to the airport. He flew around aimlessly for a while, until he saw a skyscraper. He flew up close to it and hovered outside a window where a meeting was being held, until the people inside noticed him and came to the window to see what was going on. The pilot then held up a big sign that said "Where am I?" on it. Somebody inside got a big piece of cardboard and wrote on it "You are in a helicoopter." The pilot held up another sign that said "Thank you." and then flew straight to the airport and landed. After they were on the ground, one of the passengers asked him how he was able to know where the airport was from the information on the sign. "That's simple", said the pilot. "The help they gave me was technically correct, but totally useless, so I knew it must be the Microsoft building, and I was able to find the way to the airport from there".
The TOG