Author James Gleick (“A Bug and a Crash,” around.com/ariane.html) writes that “It took the European Space Agency 10 years and $7 billion to produce Ariane 5, a giant rocket capable of hurling a pair of three-ton satellites into orbit with each launch. … All it took to explode that rocket less than a minute into its maiden voyage … was a small computer program trying to stuff a 64-bit number into a 16-bit space. One bug, one crash. Of all the careless lines of code recorded in the annals of computer science, this one may stand as the most devastatingly efficient.” Write a safety scenario that addresses the Ariane 5 disaster, and discuss tactics that might have prevented it.