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Anne: Halley’s Comet, now in a part of

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Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 14 Feb 2017, 09:53
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Difficulty:

  55% (hard)

Question Stats:

61% (01:37) correct 39% (01:46) wrong based on 471 sessions

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Anne: Halley’s Comet, now in a part of its orbit relatively far from the Sun, recently flared brightly enough to be seen by telescope. No comet has ever been observed to flare so far from the Sun before, so such a flare must be highly unusual.

Sue: Nonsense. Usually no one bothers to try to observe comets when they are so far from the Sun. This flare was observed only because an observatory was tracking Halley’s Comet very carefully.

Sue challenges Anne’s reasoning by

A. pointing out that Anne’s use of the term “observed” is excessively vague
B. drawing attention to an inconsistency between two of Anne’s claims
C. presenting evidence that directly contradicts Anne’s evidence
D. offering an alternative explanation for the evidence Anne cites
E. undermining some of Anne’s evidence while agreeing with her conclusion

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Re: Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 09 Mar 2017, 03:09
Skywalker18 wrote:
Anne: Halley’s Comet, now in a part of its orbit relatively far from the Sun, recently flared brightly enough to be seen by telescope. No comet has ever been observed to flare so far from the Sun before, so such a flare must be highly unusual.
Sue: Nonsense. Usually no one bothers to try to observe comets when they are so far from the Sun. This flare was observed only because an observatory was tracking Halley’s Comet very carefully.

Sue challenges Anne’s reasoning by

A. pointing out that Anne’s use of the term “observed” is excessively vague
B. drawing attention to an inconsistency between two of Anne’s claims
C. presenting evidence that directly contradicts Anne’s evidence
D. offering an alternative explanation for the evidence Anne cites
E. undermining some of Anne’s evidence while agreeing with her conclusion


Hi,
What´s the problem with C? can anyone explain?
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Re: Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 09 Mar 2017, 23:14
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NaeemHasan wrote:
Skywalker18 wrote:
Anne: Halley’s Comet, now in a part of its orbit relatively far from the Sun, recently flared brightly enough to be seen by telescope. No comet has ever been observed to flare so far from the Sun before, so such a flare must be highly unusual.
Sue: Nonsense. Usually no one bothers to try to observe comets when they are so far from the Sun. This flare was observed only because an observatory was tracking Halley’s Comet very carefully.

Sue challenges Anne’s reasoning by

A. pointing out that Anne’s use of the term “observed” is excessively vague
B. drawing attention to an inconsistency between two of Anne’s claims
C. presenting evidence that directly contradicts Anne’s evidence
D. offering an alternative explanation for the evidence Anne cites
E. undermining some of Anne’s evidence while agreeing with her conclusion


Hi,
What´s the problem with C? can anyone explain?


Its not evidence that is citing. she just gives an explanation why the flares were observed in case of the Halley's comet.
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Re: Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 10 May 2017, 05:55
Hello.. can someone please explain why E is wrong. Thanks

Posted from my mobile device
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Re: Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 12 May 2017, 11:59
sisirkant wrote:
Hello.. can someone please explain why E is wrong. Thanks

Posted from my mobile device


E. undermining some of Anne’s evidence while agreeing with her conclusion

Anne's conclusion -> No comet has ever been observed to flare so far from the Sun before.
Sue's objects the conclusion -> There might be other comets with the same flame but not being observed that closely.

Hence they do no agree with the conclusion.
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Re: Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 16 May 2017, 06:43
sisirkant wrote:
Hello.. can someone please explain why E is wrong. Thanks

Posted from my mobile device


Here's just my thought:

E. undermining some of Anne’s evidence while agreeing with her conclusion

I think the conclusion of this question is "such a flare must be highly unusual". Anne argues that unlike other comets, Halley’s Comet "flared brightly enough to be seen by telescope".

But Sue does not agree with Anna on the reason why this flare was observed. According to Sue, it is careful tracking from observatory, rather than its brightness, that makes the flare to be seen. By refuting the reason proposed by Anne, Sue implicitly concludes that the flare is not that highly unusual. In another word, Sue does not agree with Anne's conclusion.
That's why (E) is incorrect.
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Re: Anne: Halley’s Comet, now in a part of  [#permalink]

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New post 21 Oct 2018, 09:34
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Re: Anne: Halley’s Comet, now in a part of   [#permalink] 21 Oct 2018, 09:34
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