One day, a Mechanical Engineer, Electrical Engineer, Chemical Engineer
and Computer Engineer were driving down the street in the same car.

The car broke down.
The Mechanical Engineer said, "I think a rod broke. We can check the
rods."
The Chemical Engineer said, "The way it sputtered at the end, I don't
think it's getting gas. We shall check the gas tank."

The Electrical Engineer said, "I think there was a spark and something
is wrong with the electrical system. We shall check the circuitry."

All three turned to the computer engineer and said, "What do you
think?"

The Computer Engineer said, "We shall get out of the car and get in
again ."