Although all contemporary advertising tries to persuade, only a small portion of contemporary advertising can be cons...
JayDee8732September 8, 2017
Question
Why isn't the statement "only a small portion of contemporary advertiser are morally reprehensible" not diagram as
such:
MR-some-CA
Because wouldn't the word "only" introduce a CA (contemporary advertising) as necessary??
Replies
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Hi @JayDee8732, thanks for your post. This is a parallel reasoning question. The stimulus contains a valid logical argument, which can be diagrammed as:
P: CA - > P (tries to persuade)
P: CA-some-MR
C: P-some-MR
The conclusion is reached via the transitive:
MR-some-CA - >P
To answer your specific question: the phrase "only a small portion of contemporary advertising can be considered morally reprehensible" is diagrammed as CA-some-MR (some contemporary advertising is morally reprehensible). In this context, "only" does not introduce a necessary condition--it's the phrase "only a small portion" that matters.
The reasoning structure of the stimulus is paralleled in answer choice (E):
C: SP-some-TP
P: S-some-TP
P: S - >SP
Transitive:
TP-some-S - >SP
Hope this helps! Please let us know if you have any additional questions.
jbenav246@gmail.comJanuary 19, 2021
Is this a rule we can/should remember? How will I know for the future to discern that only is not introducing a necessary condition but is rather part of a detail to a quantifier? I had the same confusion too and want to know how to keep an out for it in the future.
