by giladedelman Mon Nov 29, 2010 11:38 pm
Thanks for your question!
We're told that sometimes readers believe that even great poems express contradictory ideas, and that no one who writes a great poem intends to communicate contradictory ideas. From these premises, the argument concludes that the meaning of a poem is not whatever the poet intends to communicate. But there's a gap here. Where does "meaning" come from? It's certainly not explicitly mentioned in the premises.
Let's think about what the premises do establish: If readers believe there is sometimes contradiction in great poetry, and the author of a great poem would never intend to communicate a contradiction, it must be the case that what readers believe a poem expresses is not the same as the poet's intent.
But the actual conclusion of the argument is that the meaning of a poem is not the same as the author's intent. So, the argument is assuming an equivalency between what readers believe and the poem's meaning.
(E) is correct because it expresses this necessary assumption.
(A) is incorrect because it's not necessary to assume that different readers will disagree about the poet's intent; in fact, whether readers agree is totally out of scope.
(B) is incorrect because the argument is not about the number of ideas, but rather about whether they are contradictory.
(C) -- again, whether readers agree is irrelevant.
(D) is a bit more tempting, to me anyway, but it actually doesn't bridge the gap between a reader believing a poem has contradictory ideas, on the one hand, and meaning not being equivalent to intent, on the other hand. Even if we make this assumption, it still allows for readers to have additional beliefs about the poet's intent that are incorrect. And even more importantly, it simply doesn't address the issue of what "meaning" consists in.
The takeaway: When a Necessary Assumption question includes a new concept in the conclusion, you can treat the question like a Sufficient Assumption question and predict that the correct answer will link a concept from the premises to that new concept in the conclusion.
#officialexplanation