argument109 没有限时。。。只有20 天了 大家帮忙指点

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TOPIC: ARGUMENT109 - The following appeared in a letter to the editor of the Maple City newspaper.

"Twenty years ago Pine City established strict laws designed to limit the number of new buildings that could be constructed in the city. Since that time the average housing prices in Pine City have increased considerably. Chestnut City, which is about the same size as Pine City, has over the past twenty years experienced an increase in average housing prices similar to Pine City, but Chestnut City never established any laws that limit new building construction. So it is clear that laws limiting new construction have no effect on average housing prices. So if Maple City were to establish strict laws that limit new building construction, these laws will have no effect on average housing prices."


  In this letter,the author conludes that if Maple City establishes laws to restrict new building construction,theses laws will have no effect on the average housing prices.To support that conclusion,the author cites that Chestnut City's average housing prices experienced over 20 years incresing as Pane City's housing prices did without strict carrying out laws to limit new building constrcution.After scrutity of this argument,I find it logically problematic in several respects.
  To begin with,the comparasion between the two cites' average housing prices is unpersuasive.Even if Chestnut City is about the same size as Pine City,the specific conditions of the two cities are not necessarily similar.Without providing evidence that Pine City is comparable with Chestunut City in every respects,it is entirely possible that the later now is a fast--developing city attracting many industries,companies and maybe investing programs,which resulted in the increasing average housing prices while Pine City is a common one whose increasing housing prices benefited from the strict laws limiting new building construction.If it is the case,the average housing prices might increase to a larger scale providing strict laws were established before in Chestnut City.
  Even if strict laws limiting new building construction have no effect on Chestnut City's average housing prices, the author concludes too hastily that laws limiting new construction will also uneffective to other cities.Herpahs the housing prices in Chestnut City are not representative of housing prices all over the country.Without showing evidence that the increasing pattern of Chestnut City's housing prices is often seen in many areas without establishing relevant laws to limit new building construction,the author cannot make the argument convincing.
  Finally,the conclusion that Maple City's housing prices will not affected by laws limiting new buildings relies on the assumption that Maple City is similar with C city in respects.However,the author fails to provide the  any evidence to justify the case. Perhaps population in M city is expanding greatly and more and more people are moving to the city for  jobs,thus ,the demand for new buildings is strong enough.So it is certain that Maple City is to experience the increasing housing prices if it establishes laws limiting construction.
  In sum,this argument is unpersuasive because the author makes several  unsubstanciated assumptions.To better assess the argument,it is necessary to make sure that the housing prices in C city are representative of those in different areas and that M City is silimar to C City in relevant respects.