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本帖最后由 alex8937 于 2009-8-8 17:16 编辑
The argument in the newsletter starts by stating the discovery that the daily use of Ichthaid can probably reduce absenteeism in schools and workplaces. By giving an account of a study report in nearby East Meria, the recommendation to the local West Meria that a nutritional supplement derived from fish oil promises to prevent colds and lower absenteeism seems logically persuasive and convincingly warranted.
However, careful scrutiny of the evidence reveals that it accomplishes little toward the memo's assertion. To begin with, the first assumption is when getting a cold, the patient is certain to visit a doctor for treatment. Unfortunately, this might not be the case, for a variety of possible reasons. There is likelihood that, instead of going to hospital, the patient would like to take some medicine by themselves. Aggravating to it, the second assumption is when buying fish, the customer is bound to cook them for meals. By the same token, there is the possibility that the customer would like view fish as appreciable pets, rather than eating them.
Even if one accepts the assumption, the argument remains questionable. It is too willy-nilly for the author to estimate that a direct correlation between high fish consumption and low frequency of visiting the doctor proves that the former causes the latter. While a high correlation is strong evidence of casual relationship, in itself it is not sufficient. It is most likely that the healthy eating habits as well as the frequent outdoor activities actually contribute to build the East Merians' strong bodies. If so, the author cannot justifiably assure me that a directly correlation between fish and colds necessarily exists.
Finally, the suggestion also goes not differentiate between distinction of areas. The memo's author fails to furnish any proof to his speculation that the statistics in nearby East Meria can equally apply to the residents in West Meria. Perhaps, East Merians have certain other habits or certain inherited traits needed for a person to prevent his or her cold risk by eating fish, which are far less common among non-East Merian. Furthermore, the author is liable to overlook the potential side effect of the application of Ichthaid, which might invite several more challenging problems. The odds are that, not only the nutritional supplement kill the bacteria easily causing colds, but it also kill the friendly bacteria and would bring about a host of irreparable damage and disorder to human's body. For that matter, without taking such alternative possibility into account, the hasty application appears not to be sensible but arbitrary.
As discussed above, unless the arguer can additionally come up with substantial and concrete evidence, the result of the deduction that the daily use of Ichthaid could become a good way to prevent colds and lower absenteeism is groundless and open to doubt, which relies on a series of dubious assumption. So it is worth cautious consideration to make such counsel. Not only should cogent and valid information be provided to further bolster the study report, but it also requires a thorough confidence that the usage of Ichthaid, as part of the treatment, does take undeniable effect and deserve extensive use credibly. |
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