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发表于 2008-3-11 21:52:12
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In this analysis, the arguer concludes that by limiting the number of mopeds rented by each of the island’s six moped and bicycle rental companies, the town council of Balmer Island can reduce the number of accidents involving mopeds and pedestrians. On the surface, the argument appears to be somewhat logical, however, in actually, this alone never provides compelling evidence to make the argument sound nor organize a logical argument in favor of the conclusion.
First of all, there is no evidence indicating that the increase in the number of accidents involving mopeds and pedestrians is the consequence of the increase number of population. There are many other possible causes that attribute to this situation, not only mopeds. Sharp increase in population does not mean great increase of the number of mopeds. There is a great possibility that it is the increase of the pedestrians that made it more likely to have accidents. Since we do not know the exact proportion of the accidents caused due to mopeds, we are not sure whether this policy can reduce the rate of accidents involving mopeds and pedestrians.
Secondly, the arguer claiming that, limiting the number of mopeds rented by the island’s moped and bicycle companies will reduce the number of accidents involving mopeds and pedestrians, because the neighboring island of Torseau enforced the some meansue and their town council attained 50% reduction in moped accidents last year. This argument by analysis is wholly unpersuasive. On one hand, the main cause of moped accidents in Torseau may not be the increasing population that Balmer Island is facing. On the other hand, perhaps, it worked for Torseau Island because mepods are responsible for the accidents involving mopeds and pedestrians. However, it may not be the case in Balmer Island. Without considering and ruling out all the diversity between these two islands, the arguer’s conclusion is not defensible.
Last but not least, even assuming that the increasing number of population results in the increasing number of accidents involving mopeds and pedestrians, it is still not persuasive that the town council of Balmer island could attain 50% reduction in such accidents, by the limitation of number of mopeds rented by moped and bicycle rental companies from 50 per day to 30 per day. Considering the fact that we do not know the percentage that rented mopeds accounts in the total number of the mopeds, we are not sure that the reduction of rental mopeds would sharply reduce the number of accidents.
To sum up, the conclusion reached in the argument lacks credibility. Since the evidence cited in the analysis does not lend strong support to what the arguer claim. To make the argument more convincing, the arguer should provide more information concerning the connections between the increase of population and the increase of accident involving mopeds and pedestrians. To better evaluate the argument, we need more concrete evidence that there are enough similarity between Balmer Island and the neighboring islande of Torseau. Otherwise, the argument is logically unacceptable. |
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