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Question 484722: If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented.
If the water is filtered, then it does not contain lead.
The water does not contain lead.
Therefore, the water is filtered.
Would someone help me please? I'm not sure how to do this completely, because I am not good with these problems.
Answer by Deina(147)   (Show Source):
You can put this solution on YOUR website! You can Google "logical fallacies" and find them in any number of places.
This particular one, affirming the consequent, is in the category of "Propositional fallacies."
From http://en.wikipedia.org/wiki/Affirming_the_consequent
Affirming the consequent, sometimes called converse error, is a formal fallacy, committed by reasoning in the form:
If P, then Q.
Q.
Therefore, P.
An argument of this form is invalid, i.e., the conclusion can be false even when statements 1 and 2 are true. Since P was never asserted as the only sufficient condition for Q, other factors could account for Q (while P was false).
The name affirming the consequent derives from the premise Q, which affirms the "then" clause of the conditional premise.
And bob's your uncle!
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