Day9 On average，middle-aged consumers devote 39 percent of their retail expenditure to department store products and services
The following appeared in the opinion column of a？nancial magazine：
“On average，middle-aged consumers devote 39 percent of their retail expenditure to department store products and services，while for younger consumers the average is only 25 percent.Since the number of middle-aged people will increase dramatically within the next decade，department stores can expect retail sales to increase significantly during that period.Furthermore，to take advantage of the trend，these stores should begin to replace some of those products intended to attract the younger consumer with products intended to attract the middleaged consumer.”
Discuss how well reasoned you find this argument.In your discussion be sure to analyze the line of reasoning and the use of evidence in the argument.For example，you may need to consider what questionable assumptions underlie the thinking and what alternative explanations or counterexamples might weaken the conclusion.You can also discuss what sort of evidence would strengthen or refute the argument，what changes in the argument would make it more logically sound，and what，if anything，would help you better evaluate its conclusion.
文勇五问：
（1）本题中，事实是什么？结论是什么？“On average，middle-aged consumers devote 39 percent of their retail expenditure to department store products and services，while for younger consumers the average is only 25 percent.”和“the number of middle-aged people will increase dramatically within the next decade.”是事实，“to take advantage of the trend，these stores should begin to replace some of those products intended to attract the younger consumer with products intended to attract the middle-aged consumer.”是结论，值得反驳吗？
（2）文中第一句提到，中年人相比年轻人，在百货店消费的金额占其“retail expenditure”的比率更大，但我们是否能简单地认定，中年人在百货店花费的金额就比年轻人大呢？有没有可能中年人的总零售开支比年轻人的小得多呢？
（3）未来十年中年人口的数量会激增，年轻人的数量呢？就一定会比中年人少吗？
（4）现在的中年人和十年后的中年人会有一模一样的消费习惯吗？现在的年轻人和十年后的年轻人会有一模一样的消费习惯吗？这里是否犯了时间轴论证的错误？
（5）普遍性的规律真的适合每一个个体吗？是否每一家店都应该按照原文中所给的建议，即“these stores should begin to replace some of those products intended to attract the younger consumer with products intended to attract the middle-aged consumer”来执行？另外作为一种商业模式，是否应该只注重未来而不关注现在？下一个十年将会有增长趋势，是否应该现在就开始替换商品？文中得出这一结论的条件是充足的吗？
写一写，练一练
