In this argument the author reaches the conclusion that the publicly owned lands along the Mason River need to be improve because recreational use of the river will be increased. The basis for this recommendation is that that Mason River seldom be used by Mason City residents for any kind of recreational activity before is because of the complaints about the quality of the water in the river before and the agency responsible for the river has announced plans to clean up it. An additional reason given in support of this recommendation is that there are surveys show that residents here consistently rank water sports as a favorite form of recreation.
Firstly, the author commits a fallacy of "Post hoc, ergo propter hoc" in assuming that the complaints about the quality of the water in the river is the cause of seldom using of Mason River of the(删掉) residents for recreational activity. The only evidence offered to support the claim is that complaints occurred before seldom recreational use of the river. However, the evidence is insufficient to establish the claim in question because a mere chronological relationship is only one of the indicators of a causal relationship and, therefore, does not necessarily prove a causal relationship. To establish a general causal relationship between complaints about the quality of the water in the river and the seldom recreational use of the river, other factors that could result in seldom recreational use by residents of the river should be considered and eliminated. For example, is the speed of the water flow too fast, or, is the river not suitable for recreational use like water sport? The author's failure to investigate or even consider other possible explanations for the seldom recreational use of the river renders the conclusion based upon it highly suspect. Secondly, even if the seldom recreational use of the river is caused by the quality of the water in the river(与第一段构成让步,很好), the author commits a fallacy of hasty generalization in assuming that the announcement of the agency responsible to plan to clean up Mason River will automatically result to a(删掉) clean water of the river. The author does not provide sufficient evidence to support the claim. The announcement while suggestive in trends is insufficient to warrant its truth because there is no reason to believe that the agency will carry out their plans now and even if they carry out immediately, we have no information about the quality of the project and how well will the plans be worked. Thus, there is no guarantee of the author's claim about the increasing of recreational use of the river. Thirdly, the information provided in this article is too vague to be informative. The claim does not indicate who conducted these surveys, who responded, or when, where and how the surveys were conducted. Lacking information about the number of people surveyed and the number of respondents, it is impossible to assess the validity of the results. For example, if 300 persons are surveyed but only 3 responded, the conclusion that residents in this region consistently rank water sports as a favorite form of recreation would be highly suspect. Before the argument offers no(删掉) evidence that would rule out this kind of interpretation, until these questions are answered, the results of the survey are worthless as evidence for the conclusion. Finally, even assuming that the water will be clean and the recreational use of the river will be increased.(构成让步,非常好)It is concludes too hastily that(改为It is hasty to conclude that) the publicly owned lands need to be improved. The author ignores the likehood(改为likelihood) that the publicly owned lands along the Mason River existing(改为the existing publicly owned lands along the Mason River) is enough for all the residents here for recreational activity. Lacking information about the population in Mason City and the conditions of existing publicly owned lands, the author cannot convince me that Mason City council will need to increase its budget for improvements to the publicly owned lands along the Mason River. In summary, the conclusion reached in this argument is invalid and misleading. To make the argument more convincing, the arguer would have to prove that the publicly owned lands along the Mason River need improving. Moreover, I would suspend my judgment about the credibility of the recommendation until the arguer can provide concrete evidence that quality of the water in the river is the reason that (改为why)residents do not use Mason River for recreation. 文章各段之间的逻辑性很好,较上一篇有了很大改进,语法错误也减少了,一起努力,加油。
[ 本帖最后由 oceanus 于 2007-3-27 10:12 编辑 ] |