A jumbo jet was making its approach for landing in Seattle yesterday when
an electrical malfunction disabled all of the aircraft's electronic
navigation and communications equipment.  Due to the clouds and haze, the
pilot could not determine the jumbo jet's position and course to steer to
the airport. 
     
The pilot saw a tall building, flew toward it, circled, drew a handwritten
sign, and held it in the plane's window.  The pilot's sign said "WHERE AM
I?"
in large letters. 
     
People in the tall building quickly responded to the aircraft, drew a
large sign, and held it in a building window.  Their sign said "YOU ARE IN
AN AIRPLANE." 
     
The pilot smiled, waved, looked at his map, determined the course to steer
to SEATAC airport, and landed the plane safely. 

After they were on the ground, the co-pilot asked the pilot how the "YOU
ARE IN AN AIRPLANE" sign helped determine plane's position.  
     
The pilot responded "I knew that had to be the MICROSOFT building because,
similar to their help-lines, they gave me a technically correct but
completely useless answer."