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[逻辑小分队] 题目feifei逻辑中的一道题目,请大家说出自己的逻辑思考,谢谢帮忙!

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发表于 2014-6-14 21:15:50 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
assumption
82. Every photograph, because it involves the light raysthat something emits hitting film, must in some obvious sense be true. Butbecause it could always have been made to show things differently than it does,it cannot express the whole truth and, in that sense, is false. Therefore,nothing can ever be definitively proved with a photograph.
Logic: all photos show dif and can't express the whole truth are defined as false, false can't prove definitely , nothing can be proved definitely with a photo.
Which one of the following is an assumption that would permitthe conclusion above to be properly drawn?
A.       Whatever isfalse in the sense that it cannot express the whole truth cannot furnishdefinitive proof.
B.       The wholetruth cannot be known.
C.       It is notpossible to determine the truthfulness of a photograph in any sense.
D.       It ispossible to use a photograph as corroborative evidence if there is additionalevidence establishing the truth about the scene photographed.
E.        Ifsomething is being photographed, then it is possible to prove definitively thetruth about it.

feifei参考答案选A;红色部分是我的想法
思路:
前提:the photograph in some obvioussense be true, but it cannot express the whole truth .
推论:nothing can ever be definitivelyproved with a photograph. The problem is which of the following can permit theconclusion be properly drawn.
A. what cannot express the whole truthcannot furnish definitive proof. Right!
不对啊,那有些可以表达真实不就可以proof了吗?what canexpress whole truth can furnish definitive proof, 逆否命题等于愿意
B. it is obviously wrong真相可以通过其他途径知道,只是照片上看不出来
C. sometimes the photograph cannot expressthe whole truth but not in any sense. C的绝对,可以有D打破
D. this sentence said that photograph canuse as an extra evidence for the truth, but it is no relations with theproblem DE一样,都是possible
E. it is obviously wrong according to thepassage.

结合同种解释,加上一楼贡献,终于说服我相信标答了,谢谢!
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沙发
发表于 2014-6-15 07:35:49 | 只看该作者
The logic chain is:
Photo shows things differently --> Photo cannot express the whole truth --> Photo is false --> Conclusion: Photo cannot prove anything definitively.

There are three triggers 1) Photo shows things differently; 2) Photo cannot express the whole truth; 3) Photo is false; to lead to the conclusion - Photo cannot prove anything definitively

Answer choice A correctly picked the second trigger for the conclusion to be drawn.


For sufficient assumptions, the correct answer simply links a trigger with the conclusion of the argument . . .
http://forum.chasedream.com/thread-530080-1-1.html

D选项只是说了一个最底线的效力
photo 作为辅助的证据,来证明truth, is POSSIBLE
但这并不表明 photo作为单独的证据的效力 iimpossible

小明和我一起举这个箱子可以举到5楼
不等于 我自己就不可以举这个箱子举到5楼

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