In the argument , the arguer drew a conclusion that This conclusion is basically founded on several assumption. Plausible as these evidences are, a careful scrutiny reveals none of these evidences is of sufficient credibility, therefore lending little, if any, support to the final conclusion and weakening the argument.
In sum. The argument is primarily flawed as based on these unconvincing evidences, therefore, unless the arguer provides concrete information about… … and… we can hardly be convinced. Furthermore, it is essential to conduct a more inn-depth research on all the factors that influence …
Additionally, the arguer fails to provide any information about procedure for random sampling, and some important points in statics are not mentioned in the argument, for example, the total number of … involved in the survey, the method the survey was conducted, and even the number and percentage of respondents.
Landscape and road condition and landform, terrain
Economic factors commercial speculation economic condition, consumer price Index, currency inflation, the relationship between supply and demand
The arguer fails to consider some possible differences between A and B, which might help to bring about a different result. In fact it is entirely likely that …
Without accounting for these and other possibilities, any analogy and conclusion based on it will be unreason and premature.
The arguer assumes that is representative of … on which it relies, yet it is unwarranted when the arguer provides no evidences to sustain it. Perhaps of perhaps, it is entirely likely that…
In short, lacking information that support A is so typical that conditions in B can represent that in A, I would not accept that assumption
The arguer commit a fallacy of concurrence
Although A occurred at the same time with B. the arguer fails to provide sufficient evidences to prove a causal relationship between A and B. It is entirely likely that. In short, many factors will finally contribute to B> In order to establish a general causal relationship, other factors that might lead to B should be considered and eliminated
The author’s failure to investigate or even take into account other factors for render the conclusion based on it