when is your argument valid?

January 26, 2007 4:12am CST
In evaluating an argument, we consider separately the truth of the premises and the validity of the logical relationships between the premises, any intermediate assertions and the conclusion. The main logical property of an argument that is of concern to us here is whether it is truth preserving, that is if the premises are true, then so is the conclusion. We will usually abbreviate this property by saying simply that argument is valid.
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