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15)The following memorandum is from thebusiness manager of Happy Pancake House restaurants. Recently, butter has been replaced bymargarine in Happy Pancake House restaurants throughout the southwestern UnitedStates. This change, however, has had little impact on our customers. In fact,only about 2 percent of customers have complained, indicating that an averageof 98 people out of 100 are happy with the change. Furthermore, many servershave reported that a number of customers who ask for butter do not complainwhen they are given margarine instead. Clearly, either these customers do notdistinguish butter from margarine or they use the term 'butter' to refer toeither butter or margarine. _______________________________________________________________________________ The notion claimed by the manager of HappyPancake House in the memo seems at the first glance to be an obviousconclusion. After all, the manager cites some seemingly plausible evidences 1) that only 2 percent of customers have complained for the replacement; (2)that many servers have reported that several customers do not complain whenthey are given margarine instead. The arguer, however, should have consideredsome alternative explanations, since close scrutiny of the evidences listedabove reveals that the argument is fraught with vague, oversimplified andunconvinced assumptions, making the conclusion unpersuasive as it stands. First of all, ignoring the common sense ofthe principle of statistic method, the arguer ridiculously equate the fact that2 percent of customers have complained with the inference that 98 percent ofpeople are happy with the change. It is entirely possible that although theyshowed superficially indifference with the change, the majority of the 98percent of people who did not complained with the replacement are actuallyunhappy, masking their real feeling for several reasons. Moreover, someconsumers may be so unhappy to eat margarine that they would never visit HappyPancake House again, let alone making a complaint. In light of this, the arguersurely could not defend his conclusion without providing some furtherinformation about the attitude of the other 98 percent of the customers. Secondly, from the survey reported by someservers mentioned in the memo, unfortunately, we find no evidence to prove thatsuch survey is randomly conducted, and we even have reliable reason to doubt ifthe representatives are contributing to a sufficiently large sample to reflecta general attitudes of all consumers in the southwest of United States. It isapparently possible that only 100 customers in a row are involved in the in thesurvey, and the statistic consequence mentioned in the memo may be no more thana coincidence. Even assuming that, in ideal condition, representatives incertain amount perfectly represent the will of the whole. No evidencechallenges the possibility that servers, for a promotion, are cheating in datain order to cater the manager, rendering the conclusion made by the manager unconvincedat all. Last but not the least, even if the arguerhave logically thought about all the underlying assumptions as well asalternative explanations, it is still open to doubt that the customers areeither lacking of ability to distinguish between butter and margarine or usingthe term 'butter' to refer to the both. Since no evidence cites to underminethe possibilities that consumers are so eagerly to fill the stomach that no oneseriously care about whether it is butter or margarine. Ina nut shell, the argument is logically flawed in many aspects, rendering thereasoning farfetched as it stands. In order to enhance its arguing, furtherdetails should be provided: (1) the credibility of the servers; (2)the attitudeof the other 98 percent of people; (3)the evaluation of some alternativeexplanations. Only in this way can the manager draw a reliable conclusion andbe convinced by more people. |
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