Secondly, the argument commits the logical fallacy of after this, therefore because of this. In no case can the mere fact that +++++ be cited as evidence to support the assumption that there is a causal-effect relationship between A and B. Moreover, that just because B can be statistically correlated with A doesnt necessarily mean that A is the cause of B. In fact, the author has obviously neglected the possibility of other alternative factors such as++++, or +++ that may contribute to a certain extent of B. It may be only a coincidence that+++++. Unless the author can rule out other factors relevant to+++++, this assumption in question cant be accepted.
Thirdly, the argument has also committed the fallacy of false analogy. The argument rests on the assumption that A is analogous to B in all aspects, and the author assumes without justification that all things are equal, and that the background conditions have remained the same at different times or at different locations. No evidence is provided to support this assumption. However, there are all kinds of important differences between +++ and +++, making the analogy less than valid. For example, A++++, however, B++++. Thus lacking this assumption, the conclusion is entirely unfounded.
Fourthly, the evidence that the author provides is insufficient to support the conclusion drawn from it. One example is rarely sufficient to establish a general conclusion. Unless the arguer can show that A1 is representative of all A, the conclusion that ++++ is completely unwarranted. In fact, in face of such limited evidence, it is fallacious to draw any conclusion at all.
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