Why is "either or" in this statement shown as or and not as a typical "either or" question?
Started by
AnnaC
· started 2019-09-29 22:45
· last activity 2020-01-06 00:01
· 3 replies
Usually in either or questions the sufficient is negated while the necessary stays the same.
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Irina
· 2019-09-29 23:48
@AnnaC,
If I understand your question correctly, you are referring to the statement "if the pool of applicants...(C), then the profession will have to either lower standards (A) or there will be shortage.(B)" The proper inference from any A v B statement is:
~ A -> B
~B -> A
But in this case, visually it is easier to demonstrate the relationship when it is diagrammed as A v B statement rather than a compound conditional:
C-> A v B
Compared to:
C- > (~A -> B)
C-> (~B->A) or
C.& ~A -> B
C & ~B -> A
Does this make sense?
Let me know if you have any further questions.
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AnnaC
· 2019-10-01 15:57
Yes, so does this mean that when presented with compound statements it's ok to break them up into regular s -> n statements as you did above?
Thank you!
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shunhe
· 2020-01-06 00:01
If the question is if it means the same thing to break it up as to the statements after "compared to," they do mean the same thing logically. But it's definitely not worth doing on the LSAT. Hope this helps!
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