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题目:ARGUMENT51 - The following appeared in a medical newsletter.
"Doctors have long suspected that secondary infections may keep some patients from healing quickly after severe muscle strain. This
hypothesis has now been proved by preliminary results of a study of two groups of patients. The first group of patients, all being treated
for muscle injuries by Dr. Newland, a doctor who specializes in sports medicine, took antibiotics regularly throughout their treatment.
Their recuperation time was, on average, 40 percent quicker than typically expected. Patients in the second group, all being treated by Dr.
Alton, a general physician, were given sugar pills, although the patients believed they were taking antibiotics. Their average recuperation
time was not significantly reduced. Therefore, all patients who are diagnosed with muscle strain would be well advised to take antibiotics
as part of their treatment."
字数:409 用时:0:30:00 日期:2007/8/8
The only evidence provided in this argument is the results of the study of two groups of patients. While it seems to me not aptly support
the ultimate conclusion, for several points exist vaguely stated in the process of the study itself and the reasoning of applying the results
by the author, about which I am to argue.
To do this experiment, the hospital set two groups of patients: one for test and the other for comparison. It is mostly scientificly set but I
would point out that at least an uncontroled condition exists: the doctors. Two groups differs from their doctors, one Dr. Newland in
sports medicine and the other Dr. Alton, a general physician. We cannot find the evidences which confirm the same treatment they gave
to their patients besides the only controlled one, usage of antibiotics. A sports medicine doctor may have a series of specialized recovery
massage for his/her patients. Nor does the author explain the patients' randomicity, which may be selective according to the difference in
the doctors' major. More serious muscle injured patients might be willing to bear a higher price to see a specialized doctor, and influence
the randomicity.
Furthermore, to rulling out the possibiliy of psychological, the experiment designed a trick, that is to have the patients in comparison
group take sugar pillars for substitution. While it is also the recognation of the difference in the two doctors may bring in new
psychological influence. Just think about what if the patients in the comparison group were told at the very beginning that what they
were eating is only sugar: the patients probably knew at first the level of the their doctor. The caution in 'pillar trick' is counteracted by
the negligence in 'doctors'.
Another question lies in the generalization process, where no full evidences could justify the rationality of the author's generalization
from the results, which come from the experiments on the samples who were suffering severe muscle strain, to the conclusion for all the
patients who are diagnosed with muscle strain. Different extent of strain may point to different treatments, and it is the commonsense,
especially when it comes to medicine, one that may cause sharp effect in our health. Doses should be controled when ultilizing in patients
and in some cases when the symptom is light enough, antibotics effect little and there is no demond for it. More serious by-effects may
exist in the usage of antibotics on pregnant women, children, the elder and other fragile groups. And thus it is dangerous for every
patient to have a same advise in antibotics.
To sum up, the conclusion of the author seems to be too hasty. A scrutiny in both the two process may contribute to a better answer to
the quetion whether antibotics should be used. |
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