- Tue Dec 17, 2019 6:21 pm
#72609
Hi Kevin!
To identify a flaw, you should always identify the conclusion, identify the premises, and ask yourself, why don't the premises as stated fully prove the conclusion as stated? In this case, the conclusion is that the criticism that Smith's new novel is implausible is unwarranted. Why does the author tell us that criticism is unwarranted? Because each individual incident in the novel is something that could have happened to someone or other. So why isn't that premise enough to prove that conclusion? Well just because each individual incident may be plausible, that doesn't mean that having all the incidents happen to one person in one novel is plausible. It's a classic part to whole flaw. The author has assumed that just because something is true of the individual parts of the story, it must be true of the story as a whole. Answer choice (D) is correct because it describes this flaw nicely.
Answer choice (E) is incorrect simply because it does not describe that part to whole flaw. Rather, the situation in answer choice (E) sounds more similar to a circular flaw. In a circular argument, the premises and the conclusion are basically just restatements of each other (e.g., "I must be telling the truth because I'm not lying"). The premise and conclusion that we have in our stimulus are not simply restatements because there's a part to whole differentiation (i.e., each individual part is plausible, so the whole is plausible). Incidentally, the LSAT loves to throw answer choices describing circular reasoning flaws into their Flaw in the Reasoning questions. It's a very common incorrect answer choice because it usually sounds vague enough that it tempts test takers who are unsure as to what the actual flaw is. It is much less common as a correct answer choice (meaning it doesn't show up in a stimulus argument very often).
Hope this helps!
Best,
Kelsey