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Perkins: According to an article I read, the woolly mammoth‘

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Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 28 Sep 2013, 15:06
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Perkins: According to an article I read, the woolly mammoth‘s extinction in North America coincided with a migration of humans onto the continent 12,000 years ago, and stone spearheads from this period indicate that these people were hunters. But the author's contention that being hunted by humans contributed to the woolly mammoth‘s extinction is surely wrong since, as paleontologists know, no spearheads have ever been found among the many mammoth bones that have been unearthed.

Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed to the North American extinction of woolly mammoths?

A. At sites where mammoth bones dating from 12,000 years ago have been unearthed, bones of other mammals have rarely been found.

B. The stone from which stone spearheads were made is unlikely to have disintegrated over the course of 12,000 years.

C. Conditions in North America 12,000 years ago were such that humans could not have survived there on a diet that did not include substantial amounts of meat.

D. Cave paintings in North America that date from 12,000 years ago depict woolly mammoths as well as a variety of other animals, including deer and buffalo.

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would have been unlikely to leave them behind.
[Reveal] Spoiler: OA

Last edited by guerrero25 on 29 Sep 2013, 01:49, edited 2 times in total.
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 28 Sep 2013, 17:11
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I do not know the source but is a good question.

Basically the argument says: we want an answer that confirm that the humans were responsable of the X extinction

E is the only choice tha weaken the argumet. I think one of the most tricky part here is not so much the stimulus but the stem: it has a sort of double negation that leads you to think a bit.

Should be E

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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 28 Sep 2013, 19:22
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guerrero25 wrote:
Perkins: According to an article I read, the woolly mammoth‘s extinction in North America coincided with a migration of humans onto the continent 12,000 years ago, and stone spearheads from this period indicate that these people were hunters. But the author's contention that being hunted by humans contributed to the woolly mammoth‘s extinction is surely wrong since, as paleontologists know, no spearheads have ever been found among the many mammoth bones that have been unearthed.

Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed to the North American extinction of woolly mammoths?

A. At sites where mammoth bones dating from 12,000 years ago have been unearthed, bones of other mammals have rarely been found.

B. The stone from which stone spearheads were made is unlikely to have disintegrated over the course of 12,000 years.

C. Conditions in North America 12,000 years ago were such that humans could not have survived there on a diet that did not include substantial amounts of meat.

D. Cave paintings in North America that date from 12,000 years ago depict woolly mammoths as well as a variety of other animals, including deer and buffalo.

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would have been to leave them behind.

OA to follow ...


Author's conclusion : That woolly mammoth were not killed by humans, coz there was no trace of spearhead in the bones of animal
Our aim : Weaken author's claim [ although its phrased in the most complicated way - the strongest reason for discounting the evidence Perkins cites in arguing against the contention]


E could be the answer, if its phrased as below

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would NOT have been to leave left them behind.

If hunter had left the spear head behind, then we should find it in the bones of mammoth. Morover the phrase does not sound correct in its current form. If the effort required are great then why to leave it behind? Chances are that they would take them back with them.

Then E would imply that hunter wont leave the spear heads behind and hence paleontologists didn't find any spearhead from the bones of woolly mammoth, although they were killed by humans
Do let me know if my reasoning is correct and that answer E is missing few words. thanks
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 28 Sep 2013, 20:28
ankur1901 wrote:
guerrero25 wrote:
Perkins: According to an article I read, the woolly mammoth‘s extinction in North America coincided with a migration of humans onto the continent 12,000 years ago, and stone spearheads from this period indicate that these people were hunters. But the author's contention that being hunted by humans contributed to the woolly mammoth‘s extinction is surely wrong since, as paleontologists know, no spearheads have ever been found among the many mammoth bones that have been unearthed.

Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed to the North American extinction of woolly mammoths?

A. At sites where mammoth bones dating from 12,000 years ago have been unearthed, bones of other mammals have rarely been found.

B. The stone from which stone spearheads were made is unlikely to have disintegrated over the course of 12,000 years.

C. Conditions in North America 12,000 years ago were such that humans could not have survived there on a diet that did not include substantial amounts of meat.

D. Cave paintings in North America that date from 12,000 years ago depict woolly mammoths as well as a variety of other animals, including deer and buffalo.

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would have been to leave them behind.

OA to follow ...


Author's conclusion : That woolly mammoth were not killed by humans, coz there was no trace of spearhead in the bones of animal
Our aim : Weaken author's claim [ although its phrased in the most complicated way - the strongest reason for discounting the evidence Perkins cites in arguing against the contention]


E could be the answer, if its phrased as below

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would NOT have been to leave left them behind.

If hunter had left the spear head behind, then we should find it in the bones of mammoth. Morover the phrase does not sound correct in its current form. If the effort required are great then why to leave it behind? Chances are that they would take them back with them.

Then E would imply that hunter wont leave the spear heads behind and hence paleontologists didn't find any spearhead from the bones of woolly mammoth, although they were killed by humans
Do let me know if my reasoning is correct and that answer E is missing few words. thanks


Yes, I agree with you here. (E) is the correct answer if the choice is corrected as you said above.
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 29 Sep 2013, 01:51
ankur1901 wrote:
guerrero25 wrote:
Perkins: According to an article I read, the woolly mammoth‘s extinction in North America coincided with a migration of humans onto the continent 12,000 years ago, and stone spearheads from this period indicate that these people were hunters. But the author's contention that being hunted by humans contributed to the woolly mammoth‘s extinction is surely wrong since, as paleontologists know, no spearheads have ever been found among the many mammoth bones that have been unearthed.

Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed to the North American extinction of woolly mammoths?

A. At sites where mammoth bones dating from 12,000 years ago have been unearthed, bones of other mammals have rarely been found.

B. The stone from which stone spearheads were made is unlikely to have disintegrated over the course of 12,000 years.

C. Conditions in North America 12,000 years ago were such that humans could not have survived there on a diet that did not include substantial amounts of meat.

D. Cave paintings in North America that date from 12,000 years ago depict woolly mammoths as well as a variety of other animals, including deer and buffalo.

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would have been to leave them behind.

OA to follow ...


Author's conclusion : That woolly mammoth were not killed by humans, coz there was no trace of spearhead in the bones of animal
Our aim : Weaken author's claim [ although its phrased in the most complicated way - the strongest reason for discounting the evidence Perkins cites in arguing against the contention]


E could be the answer, if its phrased as below

E. Because of the great effort that would have been required to produce each stone spearhead, hunters would NOT have been to leave left them behind.

If hunter had left the spear head behind, then we should find it in the bones of mammoth. Morover the phrase does not sound correct in its current form. If the effort required are great then why to leave it behind? Chances are that they would take them back with them.

Then E would imply that hunter wont leave the spear heads behind and hence paleontologists didn't find any spearhead from the bones of woolly mammoth, although they were killed by humans
Do let me know if my reasoning is correct and that answer E is missing few words. thanks


your reasoning is correct . I missed "unlikely" when typing option E . This has been corrected now . thanks !
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 29 Sep 2013, 03:43
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I think that the major take-away in this scenario (the question and the typo) is this: of course is rare if not impossible to have an error in a question from gmac,, still is possible to do not understand the whole nuances of the question but you are STILL able to pick the correct one understanding the whole thing

I didn't even notice the error, and I pick the right choice in 40 seconds

Morale of the story: do not be stuck

regards
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 29 Sep 2013, 04:37
carcass wrote:
I think that the major take-away in this scenario (the question and the typo) is this: of course is rare if not impossible to have an error in a question from gmac,, still is possible to do not understand the whole nuances of the question but you are STILL able to pick the correct one understanding the whole thing

I didn't even notice the error, and I pick the right choice in 40 seconds

Morale of the story: do not be stuck

regards



understood ! .. It seems you 're damn quick in tackling CR questions . It took me 1:50 sec to zero in the correct answer .How do you maintain such a pace ?..appreciate if you could share some tactics . Any CR question with difficulty level ~650+ takes me 2-3 mins to answer :(
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 29 Sep 2013, 08:45
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guerrero25 wrote:
carcass wrote:
I think that the major take-away in this scenario (the question and the typo) is this: of course is rare if not impossible to have an error in a question from gmac,, still is possible to do not understand the whole nuances of the question but you are STILL able to pick the correct one understanding the whole thing

I didn't even notice the error, and I pick the right choice in 40 seconds

Morale of the story: do not be stuck

regards



understood ! .. It seems you 're damn quick in tackling CR questions . It took me 1:50 sec to zero in the correct answer .How do you maintain such a pace ?..appreciate if you could share some tactics . Any CR question with difficulty level ~650+ takes me 2-3 mins to answer :(


mmmm

on one sideis really a question of practice, and when I say practice I mean a lotttttt of practice. Trying to study the question at end not only to pick the right one but also to understand why. To understand the dicothomy of the question itself (is not important if it is verbal or math)

on the other side I read SUPER carefully the stimulus to disentangle why is so, why is that. here an example: a question from OG the last one so should be difficult, a really upper level question.

Quote:
Vargonia has just introduced a legal requirement that student-teacher ratios in government-funded schools not
exceed a certain limit. All Vargonian children are entitled to education, free of charge, in these schools. When a
recession occurs and average incomes fall, the numberof children enrolled in government-funded schools tends
to increase. Therefore, though most employment opportunities contract in economic recessions, getting a
teaching job in Vargonia's government-funded schools will not be made more difficult by a recession.
Which of the following would be most important to determine in order to evaluate the argument?
(A) Whether inVargonia there are any schools not funded bythe government that offer children an education
free of charge
(B) Whether the number of qualified applicants for teaching positions in government-funded schools increases
significantly during economic recessions
(C) What the current student-teacher ratio in Vargonia's government-funded schools is
(D) What proportion of Vargonia's workers currently hold jobs as teachers in government-funded schools
(E) Whether in the past a number of government-funded schools in Vargonia have had student-teacher ratios
well in excess of the new limit


My process: breaking down the stumulus in sentences. the same RC strategy that I adopt: the stop strategy. In that way I do not re-read the stimulus and eliminate the answer right away. one by one.

Quote:
Vargonia has just introduced a legal requirement that student-teacher ratios in government-funded schools not
exceed a certain limit


the ratio is constant. no matter what, cannot be unbalanced. Better: can not exceed a certain level. for what reason: major costs and so on.....ok well. go ahead

Quote:
All Vargonian children are entitled to education, free of charge, in these schools


pretty clear

Quote:
When a recession occurs and average incomes fall, the number of children enrolled in government-funded schools tends to increase.


Here is the key point: if this happens the ratio is going to be unbalanced (see the first sentence)

Quote:
Therefore, though most employment opportunities contract in economic recessions, getting a teaching job in Vargonia's government-funded schools will not be made more difficult by a recession.


Conclusion: a lot of people can be teacher. Now: or we have more students to maintain the ratio costant if the teachers go up OR we have to eliminate one of the two variables: the children is not possible because all students have the same rights to attend the school so we have to eliminate or to find a reason to eliminate the teacher to have a costant ratio OR that this does not exceed a certain limit

Which of the following would be most important to determine in order to evaluate the argument?

(A) Whether inVargonia there are any schools not funded bythe government that offer children an education free of charge

school not funded: we care about FOUNDED...delete

(B) Whether the number of qualified applicants for teaching positions in government-funded schools increases significantly during economic recessions

In either scenarios the ratio could be out of balance: or more teachers than students (if qualified) or more students than teachers (if not qualified)

(C) What the current student-teacher ratio in Vargonia's government-funded schools is

The current ratio: is not important. we care about the NEW ratio in the new scanario when a downturn comes into the picture

(D) What proportion of Vargonia's workers currently hold jobs as teachers in government-funded schools

The proportion among the teachers is not our concern

(E) Whether in the past a number of government-funded schools in Vargonia have had student-teacher ratios this option well in excess of the new limit

In the past: one second of thinking and delete

Notice how in this last option we talk about limit and ratio: exactly what we have talked before to see this option, reading the stimulus. This confirms us that our hint was right.


This way of thinking should be flexible, depends on the context but for sure is quite good: because it is not related to a rigid strategy, on what you learn from books (though is what we learn in concrete to overcome the test) and permits you if do not understand a single word to bypass the whole thing and move on. In other words, do not be stuck.

I hope this helps you ;)

regards
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Re: Perkins: According to an article I read, the woolly mammoth‘ [#permalink] New post 21 Nov 2013, 10:01
I must say carcass...getting right answer in 40 sec is just too good..
I normally take 1min to understand the argument, and next 30 seconds or more :( in finding right answer.
how you managed to get such high speed of reading as well as comprehending? Would you mind sharing some tips ?
Re: Perkins: According to an article I read, the woolly mammoth‘   [#permalink] 21 Nov 2013, 10:01
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