Friday, the 13th

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Friday, the 13th

by sourabh33 » Thu May 12, 2011 8:14 am
Odysseus answered well when the priests showed him a picture of those who had honored the gods and then escaped shipwreck, and asked him whether he did not now acknowledge the power of the gods-"Yes," he asked, "but where are those pictured who were drowned after their prayers?" And such is the way of all superstitions; wherein humans, having a delight in such vanities, mark the events where they are fulfilled, but where they fail, though this happens much oftener, neglect and pass them by.

Which one of the following contains the error of reasoning described by the author in the passage?

(A) I have discovered that Friday the 13th really is a day of misfortune. Just this past Friday, the 13th, I locked myself out of the house.
(B) Although Napoleon and Alexander the Great were short, Abraham Lincoln and Charles de Gaulle were tall. So short people seek leadership in order to overcome feelings of inferiority.
(C) Every semester for the past 15 years, an average of 10 percent of Ms. Elliot's history students have dropped her course before the exam. So, it seems likely that we can expect 10 percent to drop out this year.
(D) No reliable observer has ever actually seen a yeti. The strongest evidence seems to be some suspicious tracks. So I think this search for a yeti is probably a wild-goose chase.
(E) I cannot trust my lucky shirt any longer. I wore it to the game today and our team lost.


OA A
Source: — Critical Reasoning |

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by rk10 » Mon May 16, 2011 12:42 am
why not E ?

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by Brian@VeritasPrep » Mon May 16, 2011 8:42 am
Thanks for the invite to weigh in here!

With these "method of reasoning" questions, I think it's helpful to make sure you get the direction of logic first before moving on at all. And here the author's logic is essentially:

People use only evidence that confirms their superstitions, and don't bother with evidence that counters them.

Choice A is a great example of that - the author of A finds one piece of evidence for his Friday the 13th superstition and uses it to confirm the superstition without examining any other evidence.

E, by contrast, uses one piece of evidence to COUNTER the superstition. "My superstition no longer holds because of one piece of evidence for which it didn't work."

Since the logic of the original is that people only seek to confirm superstitions, E is out...it does just the opposite.
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by mundasingh123 » Mon May 16, 2011 9:24 am
As far as B is concerned ,Isnt the argument ignoring those cases of short men who do not seek leadership. Whats wrong with B ? in this case at least the argument takes only those examples of short men into consideration , who are short and seek leadership
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