ch. 12 identifying and evaluating arguments

CRCB CH. 12 IDENTIFYING AND EVALUATING ARGUMENTS


When people create and critique arguments, it's helpful to understand what an argument is and is not. Sometimes an argument is seen as a verbal fight, but that is not what is meant in these discussions. Sometimes a person thinks they are offering an argument when they are only providing assertions. An argument is a deliberate attempt to move beyond just making an assertion. When offering an argument, you are offering a series of related statements which represent an attempt to support that assertion — to give others good reasons to believe that what you are asserting is true rather than false. The purpose of an argument: to offer reasons and evidence for the purpose of establishing the truth value of a proposition, which can mean either establishing that the proposition is true or establishing that the proposition is false. If a series of statements does not do this, it isn’t an argument.
Another aspect of understanding arguments is to examine the parts. An argument can be broken down into three major components: premises, inferences and a conclusion. Premises are statements of (assumed) fact which are supposed to set forth the reasons and/or evidence for believing a claim. The claim, in turn, is the conclusion: what you finish with at the end of an argument. When an argument is simple, you may just have a couple of premises and a conclusion. Inferences are the reasoning parts of an argument. Conclusions are a type of inference, but always the final inference. Usually an argument will be complicated enough to require inferences linking the premises with the final conclusion.
Unfortunately, most arguments aren’t presented in such a logical and clear manner as the above examples, making them difficult to decipher sometimes. But every argument which really is an argument should be capable of being reformulated in such a manner. If you cannot do that, then it is reasonable to suspect that something is wrong.