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# Efficiency and redundancy are contradictory characteristics

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25 Jun 2009, 04:11
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Efficiency and redundancy are contradictory characteristics of linguistic systems: however, they can be used together to achieve usefulness and reliability in communication. If a spoken language is completely efficient, then every possible permutation of its basic language sounds can be an understandable word. However, if the human auditory system is an imperfect receptor of sounds, then it is not true that every possible permutation of a spoken language’s basic language sounds can be an understandable word.
If all of the statements above are true, which one of the following must also be true?
(A) Efficiency causes a spoken language to be useful and redundancy causes it to be reliable.
(B) Neither efficiency nor redundancy can be completely achieved in spoken language.
(C) If a spoken language were completely redundant, then it could not be useful.
(D) If the human auditory system were a perfect receptor of sounds, then every permutation of language sounds would be an understandable word.
(E) If the human auditory system is an imperfect receptor of sounds, then a spoken language cannot be completely efficient.
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25 Jun 2009, 04:18
IMO D.
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25 Jun 2009, 07:11
IMO E.

If the human auditory system is an imperfect receptor of sounds, then it is not true that every possible permutation of a spoken language’s basic language sounds can be an understandable word.

If a spoken language is completely efficient, then every possible permutation of its basic language sounds can be an understandable word
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25 Jun 2009, 08:22
Another vote for E

(A) Efficiency causes a spoken language to be useful and redundancy causes it to be reliable.
Can't be deduced
(B) Neither efficiency nor redundancy can be completely achieved in spoken language.
No proof of this what so ever
(C) If a spoken language were completely redundant, then it could not be useful.
Again no mention of redundancy
(D) If the human auditory system were a perfect receptor of sounds, then every permutation of language sounds would be an understandable word.
This is converse of what's stated in the premise. So not true
(E) If the human auditory system is an imperfect receptor of sounds, then a spoken language cannot be completely efficient.
Only option that makes sense.
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Re: LSAT - Efficiency   [#permalink] 25 Jun 2009, 08:22
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