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TOPIC: ARGUMENT17 - The following appeared in a letter to the editor of the Walnut Grove town newspaper.
"Walnut Grove's town council has advocated switching from EZ Disposal (which has had the contract for trash collection services in Walnut Grove for the past ten years) to ABC Waste, because EZ recently raised its monthly fee from $2,000 to $2,500 a month, whereas ABC's fee is still $2,000. But the town council is mistaken; we should continue using EZ. EZ collects trash twice a week, while ABC collects only once. Moreover, EZ-which, like ABC, currently has a fleet of 20 trucks-has ordered additional trucks. Finally, EZ provides exceptional service: 80 percent of respondents to last year's town survey agreed that they were 'satisfied' with EZ's performance."
The author concluded that they should still use EZ, which depends on the assumption that Walnut Grove's town council made a mistake to switch to ABC Waste because of the recently increase of EZ' monthly fee. The author further argued that EZ collects trash once more than ABC per month, and EZ ordered additional trucks. Then the author cites a survey to show that EZ provides exceptional service. However, the reasoning suffers several flaws as follows.
First of all, the assertion that the council is mistaken depends on the assumption that the council made the decision just because of the mere fact that EZ recently raised its monthly fee from $2,000 to $2,500. However, we are not informed whether it is the case. For one thing, we don't know if there is extra fee except the monthly fee, so we cannot indicate the payment will be more if the council swatches. Moreover, the cost is only one of many factors in choosing a waste collecting company. The other factors include service, credit, as well as how it will deals with the waste. For as a government, it is obliged to take pollution in to account. It is likely that ABC finds a better way to dispose the waste, so the government changed their mind. In short, without more information about why the government made such switch, the author can not regard its decision as a mistake.
Secondly, the fact that EZ ordered an extra number of trucks does not make any sense when no evidence is provided if ABC will order the same amount, if not more. Perhaps ABC has also ordered several more trucks whose number exceeds that of what EZ has ordered. Moreover, the content of a truck vary from type to type. To convincing us EZ has a superior ability to collect waste, more evidence involves those factors must be showed.
Thirdly, the author's conclusion that EZ enjoys exceptional service relies on a survey which is statistically unreliable. the author failed to provide any information that how the survey was conducted, how the sample was selected, as well as evidence that the respondents are representative of the overall EZ' customers. Without evidence of its reliability of the survey, it cannot lend any strong support to the author's argument. Furthermore, despite of EZ' unwarranted-exceptional service, no evidence proves ABC's serves worse, it is quite possible that ABC' boasts a more exceptional service so the government switched EZ to it.
[ 本帖最后由 staralways 于 2006-2-25 23:46 编辑 ] |
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