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3.The following appeared as a letter to the editor from a Central Plaza store owner.
"Over the past two years, the number of shoppers in Central Plaza has been steadily decreasing while the popularity of skateboarding has increased dramatically. Many Central Plaza store owners believe that the decrease in their business is due to the number of skateboard users in the plaza. There has also been a dramatic increase in the amount of litter and vandalism throughout the plaza. Thus, we recommend that the city prohibit skateboarding in Central Plaza. If skateboarding is prohibited here, we predict that business in Central Plaza will return to its previously high levels."
Write a response in which you discuss what questions would need to be answered in order to decide whether the recommendation is likely to have the predicted result. Be sure to explain how the answers to these questions would help to evaluate the recommendation.
• Claim: prohibiting skateboarding
Data: number of shoppers decreases, while popularity of skateboarding increases
Warrant: popularity of skateboarding -> decrease in number of shoppers
Question:
1. Time sequence? If decrease in number of shoppers occurs first?
2. Other reasons other than popularity of skateboarding?
• Claim: prohibiting skateboarding
Data: amount of litter and vandalism increases
Warrant: popularity of skateboarding -> litter and vandalism -> decrease in number of shoppers
Question:
1. relationship between popularity of skateboarding and litter vandalism?
2. Will this policy that is prohibiting skateboarding be effective?
The author of the letter recommends that skateboarding should be prohibited in order to let the business in Central Plaza to bounce back to the previous level (or resume the business to the previous level). The recommendation is based on the assumption that popularity of skateboarding causes the number of shoppers in Central Plaza to decrease. However, in order to evaluate the author’s recommendation, we still need to answer several questions such as the sequence of the popularity of skateboarding and the decline in the number of shoppers, other possible reasons that may lead to gloomy business in Central Plaza, the relationship between vandalism and skateboarding, and the effectiveness of prohibiting skateboarding.
Firstly, the question about the sequence of the two events should be addressed. In the letter, the statistic shows that when skateboarding becomes popular, number of shoppers in Central Plaza declines. And the author assumes that the popularity of skateboarding occurred first. However, if before the skateboarding became popular, number of shoppers already had started to decline rapidly, then we might not be able to conclude that the popularity of skateboarding causes the decrease in number of shoppers. Decline in number of shoppers might be caused by other reasons. Therefore, prohibiting skateboarding might not be effective to boom the business.
Moreover, there might be other possible reasons that cause the decline in the number of shoppers. For example, the city where Central Plaza is located could encounter economic crisis in recent years, so people’s purchasing power decreased. And they could not afford to shop in the Central Plaza; thus, the number of shoppers declined. Under this circumstance, prohibiting skateboarding would not boom the business because popularity of skateboarding is not the reason behind the gloomy business. (同一了一下時態,全部改成了過去式+虛擬語氣)
Furthermore, we also need to examine the relationship between vandalism and skateboarding. In the letter, the author implies that skateboarding brought vandalism and littering, and due to vandalism and littering, the number of shoppers declined. However, vandalism and littering might not be related to skateboarding. For example, vandalism and littering might arise because the security of Central Plaza became weak or Central Plaza fired many policemen. In this case, vandalism might not arise from skateboarding, so popularity of skateboarding might not be the indirect cause of decrease in number of shoppers. Thus, prohibiting skateboarding might be useless. (發現自己有時候用may有時候用might。。。orz)
Finally, we also need to ask about the effectiveness of prohibiting skateboarding. If we assume that the author’s claim is true, that skateboarding did cause the number of shopper to decrease, we still might need to examine the effectiveness of prohibiting skateboarding. We may need to ask if the damage caused by skateboarding is enduring and long-term. For example, skateboarding might leave a very bad impression on shoppers so that they did not want to come back ever. Even prohibiting skateboarding could not fix the damage under this circumstance. Therefore, prohibiting skateboarding might be not effective in this case.
In conclusion, without answering the above questions, it is difficult to decide if the author’s claim or recommendation has predictive power or not.
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