Once, an engineer, a physicist and a safety
officer all applied for the same job. The person interviewed
all three, and thought all were excellent. He had to think
of some way to find the best person. So he told them all to
come back the next day and tell him the exact height of the
building. The one who was closest would get the job.
The physicist went to the top of the building, and dropped
iron balls to the ground, and had his friend timed the
balls. He did this several times.
The engineer got out a sextant, and computed ratios of a
yardstick to the building, etc.
The next day, the manager asks all three of them to tell how
tall the building is.
"75 feet, 2.8 inches" says the physicist.
"76 feet, 4.1 inches" says the engineer.
"75 feet, 8.4 inches" says the safety officer.
"My God!" said the manager, "the safety officer got it
exactly correct! How did you manage that?"
"Well", said the safety officer, "I went down to planning
department and looked up the height in the building
records."