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A technician on a Navy guided-missile ship entered a zero in the wrong place in a computer program calibrating a fuel valve.
A technician on a Navy guided-missile ship entered a zero in the wrong place in a computer program calibrating a fuel valve. The program divides another number by the entered number and crashed because division by zero is an invalid operation. The program failure caused the ship’s entire Local Area Network to fail, leaving the ship dead in the water for almost three hours.
To what degree is each of the following people responsible:
the technician,
the person (team) who wrote and tested the fuel-valve calibration program,
the person who selected and purchased the ship’s Local Area Network,
the software company that sells the network software,
the captain of the ship?
What, if anything, did each do wrong, and what could reduce the chance of such a problem in the future?
Are there any other people who bear some of the responsibility?
(You may not be able to give full and definite answers without more detailed information. Where necessary, indicate what additional information you need and how it would affect your answer.)
