First, it is questionable that middle-aged consumers will increase greatly within the next decade. According to the above argument, one can not get the conclusion that the middle-aged consumers will increase during the next decade. The population of the present young people should be presented. If now the number of younger people surpasses the number of middle-aged people greatly, then one can get the above conclusion. If not, the conclusion is wrong. The above article gives its reader the impression that middle-aged customers will increase just because the young people will become middle-aged patronages in ten years. So, it is illogical。
Second, the author assumes that the average expenditure to department store products and service of middle-aged customers is greater than those of young ones. In fact, young people usually spend more money than older ones. So, if the author wants to convince others that the opposite is right, he must present related information or data collected in some surveys。
In summary, the article leaves out the paramount issues mentioned above. Hence it is not thorough or convincing. If it had included persuasive information that could eliminate its readers doubts, it would have been more sound and compelling。
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