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Meteorite explosions in the Earth s atmosphere as large as

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Meteorite explosions in the Earth s atmosphere as large as [#permalink] New post 04 Apr 2007, 19:42
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Meteorite explosions in the Earth’s atmosphere as large as the one that destroyed forests in Siberia, with approximately the force of a twelve-megaton nuclear blast, occur about once a century. The response of highly automated systems controlled by complex computer programs to unexpected circumstances is unpredictable.

Which of the following conclusions can most properly be drawn, if the statements above are true, about a highly automated nuclear-missile defense system controlled by a complex computer program?

A. Within a century after its construction, the system would react inappropriately and might accidentally start a
nuclear war.
B. The system would be destroyed if an explosion of a large meteorite occurred in the Earth’s atmosphere.
C. It would be impossible for the system to distinguish the explosion of a large meteorite from the explosion of a
nuclear weapon.
D. Whether the system would respond inappropriately to the explosion of a large meteorite would depend on
the location of the blast.
E. It is not certain what the system’s response to the explosion of a large meteorite would be, if its designers
did not plan for such a contingency.
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 [#permalink] New post 04 Apr 2007, 20:41
Looking at the last sentence in the stem, I will choose E.
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 [#permalink] New post 04 Apr 2007, 20:51
D and E come close.
Picking E.

A. Within a century after its construction, the system would react inappropriately and might accidentally start a
nuclear war. Plain rubbish, no reference to a nuclear war
B. The system would be destroyed if an explosion of a large meteorite occurred in the Earth’s atmosphere. Again we cannot be sure that the system would necessarily be destroyed
C. It would be impossible for the system to distinguish the explosion of a large meteorite from the explosion of a nuclear weapon. the response is not impossible but unpredictable
D. Whether the system would respond inappropriately to the explosion of a large meteorite would depend on
the location of the blast. Might be true but can't be said with surity
E. It is not certain what the system’s response to the explosion of a large meteorite would be, if its designers did not plan for such a contingency. . This seems the most relevant as it talks about the response being unpredictable if not planned in advance.
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 [#permalink] New post 04 Apr 2007, 21:48
E is the answer - because the response is unpredictable unless planned.
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Re: CR - Meteorite explosions [#permalink] New post 04 Apr 2007, 21:51
pi10t wrote:
Meteorite explosions in the Earth’s atmosphere as large as the one that destroyed forests in Siberia, with approximately the force of a twelve-megaton nuclear blast, occur about once a century. The response of highly automated systems controlled by complex computer programs to unexpected circumstances is unpredictable.

Which of the following conclusions can most properly be drawn, if the statements above are true, about a highly automated nuclear-missile defense system controlled by a complex computer program?

A. Within a century after its construction, the system would react inappropriately and might accidentally start a
nuclear war.
B. The system would be destroyed if an explosion of a large meteorite occurred in the Earth’s atmosphere.
C. It would be impossible for the system to distinguish the explosion of a large meteorite from the explosion of a
nuclear weapon.
D. Whether the system would respond inappropriately to the explosion of a large meteorite would depend on
the location of the blast.
E. It is not certain what the system’s response to the explosion of a large meteorite would be, if its designers
did not plan for such a contingency.


E. If it is not planned then it is unexpected
Re: CR - Meteorite explosions   [#permalink] 04 Apr 2007, 21:51
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