Strengthen with Sufficient Premise Questions - - Question 14
Having an efficient, attractive subway system makes good economic sense. So, the city needs to purchase new subway c...
jamesioApril 17, 2018
Answer Choices A & E
Can we diagram this?
The way I went about it was:
PR: EASS (efficient, attractive subway systems) ===> MGES (makes good economic sense)
P: ?
C: MGES ("since" would introduce sufficient) ===> PNSC (city needs to purchase new subway cars)
Using the transitive property we would have:
EASS ===> MGES ===> PNSC
Based on this, I chose answer choice A since it would trigger the sufficient condition thus making the rest of the statement occur.
I must have diagrammed this incorrectly however, since E would trigger my necessary condition.
Please helppppp!
Thank you
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Good question. The logical gap here is between purchasing new subway cars & having an efficient attractive subway system. While diagramming can help if you need to parse down an argument to understand it, in this case it may be easier not to. The premises are that the city should do what makes good economic sense and that an efficient attractive subway system would make economic sense. The conclusion is to buy new subway cars. See how the gap is between EASS and PNSC? There's a leap between what makes the subway system efficient/attractive and buying new cars. Perhaps what would make the subway system attractive would just be a new paint job or some better lighting - there's a gap between the two ideas.
If you do want to diagram it, I would do
EASS ==> MGES MGES ==> Should do it
Conclusion: PNSC
The assumption is that an EASS requires purchasing new subway cars. Does that help?
