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 Nitani10
  • Posts: 10
  • Joined: Jul 08, 2023
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#111373
Is there anywhere else online/in the powerscore bible where I can read up on the "Uniqueness Principle of answers" concept mentioned earlier in this feed? All I could find was information about the "Uniqueness Rule of Answer Choices" which I gather is not the same thing.

For reference, here's what I found regarding the "Uniqueness Rule of Answer Choices:" https://forum.powerscore.com/viewtopic.php?f=12&t=31902
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 Jeff Wren
PowerScore Staff
  • PowerScore Staff
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  • Joined: Oct 19, 2022
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#111488
Hi Nitani,

While I can't speak for Adam, I believe that he is referring to the same general idea as the "Uniqueness Rule of Answer Choices."

One aspect of this idea is that if one answer choice forces another answer choice to also be correct (but not the other way around), then the second one would be the correct answer (assuming that the correct answer is definitely one of the two options). Unfortunately, I can't recall anywhere to point you to in our materials where this is specifically discussed, but it does come up during the analysis of certain question that deal with this concept.

For example, for a Must Be True question about runners, imagine that you've narrowed down the answer choices to the following two answers:

Answer A states "John is faster than Bill."
Answer B states "John is faster than or equal to Bill."

If Answer A were correct, then it would force Answer B to also be correct (but not the other way around). In other words, if John is in fact faster than Bill, then it is also correct to say that John is faster than or equal to Bill. However, knowing that John is faster than or equal to Bill does not prove that John is faster than Bill (since they may be equal). Therefore between these two Answers, B would be correct.

There was a tricky question about headache pills on the October 1991 LSAT that tested this exact concept.
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 Nitani10
  • Posts: 10
  • Joined: Jul 08, 2023
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#111661
Thank you!!

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