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In this argument, the arguer concludes that Luxess will improve the condition of facial skin. To justify this claim, the arguer offers the evidence that after using the new Luxess face cream, people's skin looked and felt better. A careful examination of this argument would reveal how groundless the conclusion is.
In the first place, we found no sign of random sampling in the study procedure, what is worse, the respondents in this study were all volunteers. Thus, the sample does not represent the whole situations. Because as volunteers, they might be interested in this new product. As a result, the effects they reported later could be not objective because of their preference to Luxess.(不一定是preference, 也可能是dislike,而且这句话也很罗嗦,改为 the sample does not represent the whole situations due to their personal attitude. Thus, we cannot rely on the objective effects they reported later. )On the other hand, the arguer does not provide us the sample size. What is the exact number of volunteers in that "group" ? If the sample size is not big enough, the result will be not persuasive by the same token.
In the second place, even if the study sample has no flaws at all, the arguer fails to rule out other possibilities that may result in the better facial skin condition. As it is showed in the argument, Luxess face cream was applied after washing face with a mild soap.(这个过渡有些生硬,不如改为 where has double…) There were double external factors there, thus we probably could not conclude that the better-off condition was merely due to Luxess, if we can not exclude the effect of mild soap(这个if引导的从句就多余了). Moreover, there were chances that the volunteers involved in this study washed their faces more than once a day, and (they may also use)used other face creams in the other times except( other than) in the morning. Hence, it is also unreliable to validate the real effect of Luxess. Since the other face creams might have different influences(influence不可数吧) which would weaken or strengthen the effect of Luxess.
What further weakens the conclusion is the indicator the arguer used in judging the effect of the new product. Even if it was Luxess that made volunteers' skin looked(应该是make sb. Do吧?) and felt better, the conclusion that the condition of facial skin was improved was still unwarranted. As the conclusion that the arguer attained was based on the fact that in the volunteers' report, their skin "looked and felt" better after the use of Luxess. Yet, how people's skin look and feel could not necessarily indicate the condition of facial skin. There should be more physical and scientific indicators to judge their skin to make the result of this study more convincing and logical, rather than the subjective personal feelings.
To sum up, this argument is not persuasive as it stands. Before we accept the conclusion, the arguer must improve the sampling procedure, and exclude the other external factors. To solidify the argument, the arguer would have to turn to more scientific indicators for a better judge(judge是动词吧?) of the new Luxess
我的感觉是文章表达很清楚,分析也到位,就是太罗嗦了点,开头和结尾不必把缺点都说过一遍,中间也有些句子稍嫌冗长,有的两个句子是可以合为一个的, 不必分开来说。 |
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