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11The following appeared in a memo from the mayor of the town of West Egg.
"Two years ago, our consultants predicted that West Egg's landfill, which is used for garbage disposal, would be completely filled within five years. During the past two years, however, town residents have been recycling twice as much aluminum and paper as they did in previous years. Next month the amount of material recycled should further increase, since charges for garbage pickup will double. Furthermore, over ninety percent of the respondents to a recent survey said that they would do more recycling in the future. Because of our residents' strong commitment to recycling, the available space in our landfill should last for considerably longer than predicted."
正文:
The arguer claims that the available space in West Egg’s landfill should last for considerably longer than predicted because the town’s ability of recycling materials improves greatly and the residents have strong commitment to recycling. At first glance, the argument seems well reasoned, but in my point of view, the reasoning has several problems and the facts the author bases on for his conclusion are also doubtful. So the conclusion is unconvincing.
First, the fact that West Egg’s residents have been recycling twice as much aluminum and paper as they did last year can hardly be effective evidence to conclude that the town’s general ability of recycling materials have improved too. We know that aluminum and paper are important materials in the field of recycling because among all recycled materials these two things may stand a big part in quantity. But there are many other materials that we are able to recycle nowadays, such as plastic and copper, so aluminum and paper may not be all that people recycle in West Egg. Therefore the fact that the ability of recycling aluminum and paper has improved, as the author mentioned in the memo, cannot guarantee the improvement in general recycling ability of West Egg, although I admit that it is possible.
In addition, admitting the improvement in West Egg’s ability to recycle aluminum and paper during last year, we are nevertheless not sure if for a few following years this ability will improve too because there is no evidence to show that. A long time improvement is only a tendency rather than a well-proved conclusion.
The survey that the author mentioned in the memo is even more of a problem, because it is not sufficiently representative of all the residents in West Egg. In the survey, over ninety percent of the respondents said they would do more recycling in the future. The problem is that the survey fails to indicate what portion of the people surveyed actually responded; it is entirely possible that most people who responded were responsible citizens willing to do more recycling, and that a lot of the people surveyed who are not willing to do more recycling simply have not even responded. If this possibility is unfortunately the case, residents’ commitment to recycling is only a false appearance.
In sum, I must say that the author’s conclusion about the service life of West Egg’s landfill is not convincing. As mentioned in the memo, the consultants’ prediction of the 5-years service life of West Egg’s landfill two years ago seems plausible because these experts may have already taken into account the improvement that is very likely to happen in the future. Anyway, to assess the service life of the landfill, still we lack a lot of specific information; we need more thorough investigation about West Egg’s actual ability of recycling materials as well as the residents’ true attitude toward recycling. |
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