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Mutant Kangaroos
> Mutant Marsupials Take Up Arms Against Australian Air Force
>
> The reuse of some object-oriented code (software) has caused tactical
> headaches for Australia's armed forces. As virtual reality simulators
> assume larger roles in helicopter combat training, programmers have gone
to
> great lengths to increase the realism of their scenarios, including
> detailed landscapes and - in the case of the Northern Territory's
Operation
> Phoenix - herds of kangaroos (since disturbed animals might well give away
> a helicopter's position).
>
> The head of the Defense Science & Technology Organization's Land
> Operations/Simulation division reportedly instructed developers to model
> the local marsupials' movements and reactions to helicopters. Being
> efficient programmers, they just re-appropriated some code originally used
> to model infantry detachment reactions under the same stimuli, changed the
> mapped icon from a soldier to a kangaroo, and increased the figures' speed
> of movement.
>
>
> Eager to demonstrate their flying skills for some visiting American
pilots,
> the hotshot Aussies "buzzed" the virtual kangaroos in low flight during a
> simulation. The kangaroos scattered, as predicted, and the visiting
> Americans nodded appreciatively... then did a double-take as the kangaroos
> reappeared, assembled, and from behind a hill, launched a concerted
barrage
> of Stinger missiles at the hapless helicopter. (The programmers had
> forgotten to remove that part of the infantry coding.)
>
> The lesson?
>
> Objects are defined with certain attributes, and any new object defined in
> terms of an old one inherits all the attributes. The embarrassed
> programmers had learned to be careful when reusing object-oriented code,
> and the Yanks left with a newfound respect for Australian wildlife.
> Simulator supervisors report that pilots from that point onward have
> strictly avoided kangaroos, just as they were meant to.
>
>
> *From June 15, 1999 Defense Science and Technology Organization Lecture
> Series, Melbourne, Australia, and staff reports
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