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Two paleontologists, Dr Tyson and Dr. Rees, disagree over

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Two paleontologists, Dr Tyson and Dr. Rees, disagree over [#permalink] New post 15 May 2010, 05:35
00:00
A
B
C
D
E

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25% (03:16) correct 75% (01:53) wrong based on 100 sessions
Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tyson’s conclusion.

The disagreement between the two paleontologists is over which one of the following?
(A) the relative significance of various aspects of the evidence
(B) the assumption that early hominid footprints are distinguishable from other footprints
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion
(E) the likelihood that early hominids would have walked upright on two feet

Which one of the following, if true, most seriously undermines Dr. Tyson’s conclusion?
(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals.
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe.
(C) Footprints shaped like a human’s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous.
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased.
(E) Most of the other footprints at site G were of animals with hooves.
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Re: Tyson and Dr. Rees [#permalink] New post 15 May 2010, 06:12
noboru wrote:
Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tyson’s conclusion.

The disagreement between the two paleontologists is over which one of the following?
(A) the relative significance of various aspects of the evidence
(B) the assumption that early hominid footprints are distinguishable from other footprints
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion
(E) the likelihood that early hominids would have walked upright on two feet

Which one of the following, if true, most seriously undermines Dr. Tyson’s conclusion?
(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals.
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe.
(C) Footprints shaped like a human’s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous.
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased.
(E) Most of the other footprints at site G were of animals with hooves.



I must say the question is tricky..!!

For first question, IMO, A and B are the only contenders.
Finally A.
Why not B: I don't think that any of the paleontologists is assuming that "early hominid footprints are distinguishable from other footprints"

For second question

Conclusion:"they are clearly early hominid footprints"

B weakens the conclusion..!!

OA plz.
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Re: Tyson and Dr. Rees [#permalink] New post 15 May 2010, 06:34
IMO:
1. A
2. A

1. Dr. T is arguing on the structure of foot print while Dr. R arguing on the way of walking. Both are different approaches or different aspects of one evidence. Only A is focusing on both of these while B/C/D/E are either focusing on just one aspect or irrelevant info.

2. Dr. T is arguing on the structure of foot print, which leads to hominids. If it is shown that the structure is similar to more than one category then we can weaken Dr. T's argument. A does that.


noboru wrote:
Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tyson’s conclusion.

The disagreement between the two paleontologists is over which one of the following?
(A) the relative significance of various aspects of the evidence
(B) the assumption that early hominid footprints are distinguishable from other footprints
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion
(E) the likelihood that early hominids would have walked upright on two feet

Which one of the following, if true, most seriously undermines Dr. Tyson’s conclusion?
(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals.
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe.
(C) Footprints shaped like a human’s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous.
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased.
(E) Most of the other footprints at site G were of animals with hooves.

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Re: Tyson and Dr. Rees [#permalink] New post 16 May 2010, 14:01
For the first one OA is A, for the second one, lets discuss a bit more.
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Re: Tyson and Dr. Rees [#permalink] New post 16 May 2010, 14:50
1) A
2)B
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Re: Tyson and Dr. Rees [#permalink] New post 17 May 2010, 06:45
Is it A for the first one? I went for B.

B, because two big toes could still be adjacent to each other if they belonged to two bears standing next to each other.
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Re: Tyson and Dr. Rees [#permalink] New post 19 May 2010, 10:31
I went for 'A' for first one. why 'A' is not correct?? wats justification for 'B'?

On 2nd I choose 'A'. I rejected 'B' coz it states some bear's foot are similar to humans but doesnt say they were actually seen near volcanic footprints.
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Re: Tyson and Dr. Rees [#permalink] New post 22 May 2010, 00:39
For (2), B says:
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe.

So, there are some difference b/w hominids' and bears' footprints and these can differentiate easily. So, I think B strengthens DR. T case rather than weakens.

Noboru, can we have the OA?
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Re: Tyson and Dr. Rees [#permalink] New post 24 May 2010, 10:56
I went for B and B.

After reading thru the explanation realized it should A for the first one.

but I still think it should be B for the second one.

What is the OA?
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Re: Tyson and Dr. Rees [#permalink] New post 28 May 2010, 21:50
For the second one, my take is B. What is OA please?
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Re: Tyson and Dr. Rees [#permalink] New post 08 Oct 2010, 05:38
I think for the second one the OA is A and not B because,
If the toe for the bear is on the outside then the two toes would not be adjacent to one another.
On the other hand if the prints belonged to two different individuals then the premise used by dr tyson could be negated. What do you'll think?

and i think its high time someone posted the OA
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Re: Tyson and Dr. Rees [#permalink] New post 08 Oct 2010, 06:49
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Going with A for the first one and B for the second one.

noboru wrote:
Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tyson’s conclusion.

The disagreement between the two paleontologists is over which one of the following?

Dr. Tyson thinks that the evidence shows the footprints belong to early hominids due to the shape of the footprints, while Dr. Rees believes they can't belong to early hominids because of the walking pattern. Sounds like they're disagreeing over interpretations of different aspects of the evidence.

(A) the relative significance of various aspects of the evidence Bingo
(B) the assumption that early hominid footprints are distinguishable from other footprints Clearly they agree with that, or this disagreement wouldn't happen to begin with
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints The gait has been determined and is the evidence that Dr. Rees is using, so this is not a point of dissention
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion They're both drawing conclusions, neither one is arguing that no conclusion can be drawn
(E) the likelihood that early hominids would have walked upright on two feet Dr. Rees didn't say anything about this possibility

Which one of the following, if true, most seriously undermines Dr. Tyson’s conclusion?

(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals. This would strengthen Dr. Tyson's conclusion by weakening Dr. Rees's, because it would open the possibility of the strange pattern of footprints being caused by two people walking in a particular fashion, causing the overlap of footprints
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe. This would explain the "cross-stepping pattern" - because the bear's feet look the same as a human's, except they're essentially reversed. So the footprint from the left foot would look like the right foot, and vice versa. This strengthen's Dr. Rees's position, by giving a reason to believe the footprints might belong to the bear, and thereby weakens Dr. Tyson's conclusion.
(C) Footprints shaped like a human’s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous. Strengthen's Dr. Tyson's argument by showing that the cross-stepping pattern might be an anomaly
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased. I originally answered this by POE until I started typing this post and realized that B is a much better answer. This doesn't really affect either argument, since both conclusions are being made from the same set of prints.
(E) Most of the other footprints at site G were of animals with hooves. Totally irrelevant.
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Re: Tyson and Dr. Rees [#permalink] New post 08 Oct 2010, 08:15
TehJay wrote:
Going with A for the first one and B for the second one.

noboru wrote:
Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tyson’s conclusion.

The disagreement between the two paleontologists is over which one of the following?

Dr. Tyson thinks that the evidence shows the footprints belong to early hominids due to the shape of the footprints, while Dr. Rees believes they can't belong to early hominids because of the walking pattern. Sounds like they're disagreeing over interpretations of different aspects of the evidence.

(A) the relative significance of various aspects of the evidence Bingo
(B) the assumption that early hominid footprints are distinguishable from other footprints Clearly they agree with that, or this disagreement wouldn't happen to begin with
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints The gait has been determined and is the evidence that Dr. Rees is using, so this is not a point of dissention
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion They're both drawing conclusions, neither one is arguing that no conclusion can be drawn
(E) the likelihood that early hominids would have walked upright on two feet Dr. Rees didn't say anything about this possibility

Which one of the following, if true, most seriously undermines Dr. Tyson’s conclusion?

(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals. This would strengthen Dr. Tyson's conclusion by weakening Dr. Rees's, because it would open the possibility of the strange pattern of footprints being caused by two people walking in a particular fashion, causing the overlap of footprints
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe. This would explain the "cross-stepping pattern" - because the bear's feet look the same as a human's, except they're essentially reversed. So the footprint from the left foot would look like the right foot, and vice versa. This strengthen's Dr. Rees's position, by giving a reason to believe the footprints might belong to the bear, and thereby weakens Dr. Tyson's conclusion.
(C) Footprints shaped like a human’s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous. Strengthen's Dr. Tyson's argument by showing that the cross-stepping pattern might be an anomaly
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased. I originally answered this by POE until I started typing this post and realized that B is a much better answer. This doesn't really affect either argument, since both conclusions are being made from the same set of prints.
(E) Most of the other footprints at site G were of animals with hooves. Totally irrelevant.


Thank you for putting me out of my misery. It is an excellent explanation :D
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Re: Tyson and Dr. Rees [#permalink] New post 08 Oct 2010, 08:53
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This explanation is very clear and thorough! I would just add one thing for those trying to decide between answers A) and B) on the second question. It's important to keep track of what conclusion the scientists are arguing over: whether or not the tracks are evidence of humans. Answer A) in the second question does not call that conclusion into question. It just says that there might be some disagreement about HOW MANY humans there are, without questioning the conclusion that humans were present.
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Re: Tyson and Dr. Rees [#permalink] New post 08 Oct 2010, 13:15
1. A
2. B
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Re: Tyson and Dr. Rees [#permalink] New post 12 Jan 2011, 05:59
I still dont get how the answer to the question can be A . Can someone explain. I understand that Tyson is trying to find to whom do the footprintsin quest belong and Rees is not trying to find anything.He just rejects Tysons claims because he thinks a hominid couldnt have made those proints.
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Re: Tyson and Dr. Rees [#permalink] New post 25 Apr 2011, 10:14
1.A 2.B

i think this was a bit challenging but managed to handle it right
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Re: Tyson and Dr. Rees [#permalink] New post 22 Jul 2011, 09:06
TehJay wrote:
Going with A for the first one and B for the second one.

noboru wrote:
Two paleontologists, Dr Tyson and Dr. Rees, disagree over the interpretation of certain footprints that were left among other footprints in hardened volcanic ash at site G. Dr. Tyson claims they are clearly early hominid footprints since they show human characteristics: a squarish heel and a big toe immediately adjacent to the next toe. However, since the footprints indicate that if hominids made those prints they would have had to walk in an unexpected cross-stepping manner, by placing the left foot to the right of the right foot. Dr. Rees rejects Dr. Tyson’s conclusion.

The disagreement between the two paleontologists is over which one of the following?

Dr. Tyson thinks that the evidence shows the footprints belong to early hominids due to the shape of the footprints, while Dr. Rees believes they can't belong to early hominids because of the walking pattern. Sounds like they're disagreeing over interpretations of different aspects of the evidence.

(A) the relative significance of various aspects of the evidence Bingo
(B) the assumption that early hominid footprints are distinguishable from other footprints Clearly they agree with that, or this disagreement wouldn't happen to begin with
(C) the possibility of using the evidence of footprints to determine the gait of the creature that made those footprints The gait has been determined and is the evidence that Dr. Rees is using, so this is not a point of dissention
(D) the assumption that evidence from one paleontologic site is enough to support a conclusion They're both drawing conclusions, neither one is arguing that no conclusion can be drawn
(E) the likelihood that early hominids would have walked upright on two feet Dr. Rees didn't say anything about this possibility

Which one of the following, if true, most seriously undermines Dr. Tyson’s conclusion?

(A) The foot prints showing human characteristics were clearly those of at least two distinct individuals. This would strengthen Dr. Tyson's conclusion by weakening Dr. Rees's, because it would open the possibility of the strange pattern of footprints being caused by two people walking in a particular fashion, causing the overlap of footprints
(B) Certain species of bears had feet very like human feet, except that the outside toe on each foot was the biggest toe and the innermost toe was the smallest toe. This would explain the "cross-stepping pattern" - because the bear's feet look the same as a human's, except they're essentially reversed. So the footprint from the left foot would look like the right foot, and vice versa. This strengthen's Dr. Rees's position, by giving a reason to believe the footprints might belong to the bear, and thereby weakens Dr. Tyson's conclusion.
(C) Footprints shaped like a human’s that do not show a cross-stepping pattern exist at site M, which is a mile away from site G, and the two sets of footprints are contemporaneous. Strengthen's Dr. Tyson's argument by showing that the cross-stepping pattern might be an anomaly
(D) When the moist volcanic ash became sealed under additional layers of ash before hardening, some details of some of the footprints were erased. I originally answered this by POE until I started typing this post and realized that B is a much better answer. This doesn't really affect either argument, since both conclusions are being made from the same set of prints.
(E) Most of the other footprints at site G were of animals with hooves. Totally irrelevant.


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Re: Tyson and Dr. Rees [#permalink] New post 12 Jan 2012, 08:49
mundasingh123 wrote:
I still dont get how the answer to the question can be A . Can someone explain. I understand that Tyson is trying to find to whom do the footprintsin quest belong and Rees is not trying to find anything.He just rejects Tysons claims because he thinks a hominid couldnt have made those proints.


One Dr., by going with the size of the foot print, interprets the data in one way and the other going by the arrangement interprets the data in another way (though the second interpretation contradicts the first one, its a different story)

So, the data is significant.
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Re: Two paleontologists, Dr Tyson and Dr. Rees, disagree over [#permalink] New post 12 Jan 2012, 10:37
1-A
2-B
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Re: Two paleontologists, Dr Tyson and Dr. Rees, disagree over   [#permalink] 12 Jan 2012, 10:37
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