[問題]費費邏輯#21

[shena]

Historian: We can learn about the medical history of individuals through chemical analysis of their hair. It is likely, for example, that Isaac Newton’s psychological problems were due to mercury poisoning; traces of mercury were found in his hair. Analysis is now being done on a lock of Beethoven’s hair. Although no convincing argument has shown that Beethoven ever had a venereal disease, some people hypothesize that venereal disease caused his deafness. Since mercury was commonly ingested in Beethoven’s time to treat venereal disease, if researchers find a trace of mercury in his hair, we can conclude that this hypothesis is correct.

Which one of the following is an assumption on which the historian’s argument depends?
(A) None of the mercury introduced into the body can be eliminated.
(B) Some people in Beethoven’s time did not ingest mercury.
(C) Mercury is an effective treatment for venereal disease.
(D) Mercury poisoning can cause deafness in people with venereal disease.
(E) Beethoven suffered from psychological problems of the same severity as Newton’s.

Ans:(B)

請問選項(C)錯在哪裡?

[汪汪北鼻]

some people hypothesize that venereal disease caused his deafness. Since mercury was commonly ingested in Beethoven’s time to treat venereal disease, if researchers find a trace of mercury in his hair, we can conclude that this hypothesis is correct.

Conclusion- 若發現貝多芬的hair有mercury，可證明他是服用此物來治療性病

(B) Some people in Beethoven’s time did not ingest mercury. 同時代的人沒有服物此物，表示其他人沒性病
(C) Mercury is an effective treatment for venereal disease
此物有效治療性病，基上有效無效並沒法推出貝多芬是否有性病

[marchmarch]

樓主，這題已經有討論過了！
http://www.formosamba.com/phpBB3/viewtopic.php?t=2832

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