Accurate

George and Harry set out in a trans-Atlantic hot air balloon race. After 37
hours in the air and appearing lost, George offers, "We had better lose some
altitude Harry so we can see exactly where we are." Hesitantly, Harry lets some
hot air out of the balloon, and it begins to slowly descend below the cloud
cover. Still confused as to their exact location George again offers, "I still
can't tell where we are Harry, let's ask that gentleman down there on the
ground." Harry yells down to the stranger, "Hey, Mister can you tell us where we
are?" "You're in a balloon about 100 feet up in the air," came the reply. "That
man must be a lawyer," George quipped. "How can you tell?" said Harry. "Because
the advice he just gave us is 100% accurate and totally useless!"