Argument: 2
The following appeared in a letter sent by a committee of homeowners from the Deerhaven Acres to all homeowners in Deerhaven Acres.
"Seven years ago, homeowners in nearby Brookville community adopted a set of restrictions on how the community's yards should be landscaped and what colors the exteriors of homes should be painted. Since then, average property values have tripled in Brookville. In order to raise property values in Deerhaven Acres, we should adopt our own set of restrictions on landscaping and housepainting."
In this argument the arguer recommends that all homeowners in Deerhaven Acres should adopt restrictions on landscaping and housepainting. To support this conclusion, the arguer points out that seven years ago, homeowners in nearby Brookville community adopted such restrictions, leading to tripled average property there. The argument seems at first glance to be a reasonable conclusion; however, it is unconvincing for false analogy and cause-effect fallacies.
The major problem with this argument is that analogies draw between Brookville and Deerhaven Acres are highly suspect because there may be many serious differences. For example, the functions of the two communities may be dissimilar, in that Brookville is possible a financial center and Deerhaven Acres is a residential area. It is also possible that the transportation of Brookville is much more convenient than that of Deerhaven Acres, so people prefer living in Brookville rather than in Deerhaven Acres. Thus, although there may be points of similarities between Deerhaven Acres and Brookville, the assumption that Deerhaven Acres should adopt similar restrictions of Brookville to raise average property is open to doubt.
Moreover, even though Deerhaven Acres is comparable to Brookville, the restrictions may not be the reason for the rising of property in Brookville. Perhaps in the seven years, Brookville benefits a lot from the city planning and attract more residents, so the property value increases. It is equally possible that its price is driven up by inflation or some people on purpose. It is also possible that its property value was lower than the normal level and it catches the average by tripling. Therefore, without ruling out such alternative explanations, the restrictions can not necessarily results in the increasing of property value in Brookville.
Finally, even if the restrictions lead to the growing of property value, they may not applicable to Deerhaven Acres. Because the residents in Deerhaven Acres may prefer to design their own special landscaping and housepainting, they may resist the restriction. Granted that the dwellers are willing to accept the regulations, their property value may not increase for the reason that it reaches its growing limit
In sum, the conclusion lacks credibility because the evidence cited in the analysis does not lend strong support to the arguer’s claim. To make the argument more convincing, the arguer would have to provide more specific evidence concerning that Deerhaven Acres is analogous to Brookville and that the restrictions are useful for Deerhaven Acres.