abhasjha Posted April 27, 2009 Share Posted April 27, 2009 Until recently it was thought that ink used before the sixteenth century did not contain titanium. However, a new type of analysis detected titanium in the ink of the famous Bible printed by Johannes Gutenberg and in that of another fifteenthcentury Bible known as B-36, though not in the ink of any of numerous other fifteenth-century books analyzed. This finding is of great significance, since it not only strongly supports the hypothesis that B-36 was printed by Gutenberg but also shows that the presence of titanium in the ink of the purportedly fifteenth century Vinland Map can no longer be regarded as a reason for doubting the map’s authenticity. The reasoning in the passage is vulnerable to criticism on the ground that (A) the results of the analysis are interpreted as indicating that the use of titanium as an ingredient in fifteenth-century ink both was, and was not, extremely restricted (B) if the technology that makes it possible to detect titanium in printing ink has only recently become available, it is unlikely that printers or artists in the fifteenth century would know whether their ink contained titanium or not © it is unreasonable to suppose that determination of the date and location of a document’s printing or drawing can be made solely on the basis of the presence or absence of a single element in the ink used in the document (D) both the B-36 Bible and the Vinland Map are objects that can be appreciated on their own merits whether or not the precise date of their creation or the identity of the person who made them is known (E) the discovery of titanium in the ink of the Vinland Map must have occurred before titanium was discovered in the ink of the Gutenberg Bible and the B-36 Bible Quote Link to comment Share on other sites More sharing options...
kushagra452 Posted April 27, 2009 Share Posted April 27, 2009 I think its c absence or presence of just titanium can not be used as the sole criteria for determining the date when a particular document was published. OA plz Quote Link to comment Share on other sites More sharing options...
finsisher Posted April 27, 2009 Share Posted April 27, 2009 C for me as well Quote Link to comment Share on other sites More sharing options...
cubicle Posted April 27, 2009 Share Posted April 27, 2009 another vote for C Quote Link to comment Share on other sites More sharing options...
rajatmeh Posted April 28, 2009 Share Posted April 28, 2009 Imo (a) Quote Link to comment Share on other sites More sharing options...
effective_factor Posted April 28, 2009 Share Posted April 28, 2009 Imo C Quote Link to comment Share on other sites More sharing options...
abhasjha Posted April 29, 2009 Author Share Posted April 29, 2009 OA- A Official explanation follows : The author first concludes that the presence of titanium in the ink of the Gutenberg and B- 36 Bibles supports the theory that Gutenberg printed both. Okay, this hinges on titanium’s being a rare ingredient in 15th-century ink and therefore characteristic of Gutenberg. Then the author concludes that the presence of titanium in the ink of the Vinland Map suggests that the map dates from the 15th century. But that conclusion hinges on titanium’s being typical of 15th-century ink. Clearly, both conclusions can’t be true: If titanium was typical of 15th-century ink, then the B-36 Bible could have been printed by anyone. (B) and (D) contain classic scope shifts. In (B), the issue of whether 15th-century printers and artists knew titanium was in their ink was never raised by the author. As for (D), the author never implies the B-36 Bible and the Vinland Map can’t be appreciated on their own merits, so this can’t be a problem in his reasoning. © Read carefully! Although the author does use titanium’s presence to determine — unreasonably — when the Vinland Map was printed or drawn, he doesn’t use it to determine where it was printed or drawn. More importantly, © misses the author’s major flaw, that of drawing inconsistent conclusions. (E) introduces an irrelevant distinction. The author never says exactly when these discoveries occurred, just that they happened “recently.” The problem isn’t which discovery occurred first; it’s that the author uses them to draw conflicting conclusions • Reading the question stem first, while helpful with all Logical Reasoning questions, is an especially handy strategy for flaw questions. You save time by knowing at the outset that there’s something wrong with the reasoning in the stimulus. • As you go through the answer choices for flaw questions, ask yourself whether fixing the “flaw” listed in each choice will repair the argument. If there’s still a problem with the reasoning, look for a different choice. • Pay meticulous attention to detail when your read choices. The reference to “location” in ©, for example, is enough to rule out this choice. Quote Link to comment Share on other sites More sharing options...
jasonleo Posted May 3, 2009 Share Posted May 3, 2009 Hi, abhasjha, thank u for ur good questions. um, Would u pls tell me where these good questions come from? I am poor in RC, so i want to find some good references to study. Quote Link to comment Share on other sites More sharing options...
abhasjha Posted May 4, 2009 Author Share Posted May 4, 2009 Hi, abhasjha, thank u for ur good questions. um, Would u pls tell me where these good questions come from? I am poor in RC, so i want to find some good references to study. The source is 1000 CR.... LSAT section. Quote Link to comment Share on other sites More sharing options...
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