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I am reading "The Philosopher's Toolkit" by Baggily and Fosl, and in section 1.12 is the following: "As it turns out, all valid arguments can be restated as tautologies - that is, hypothetical statements in which the antecedent is the conjunction of the premises and the conclusion."
My understanding is the truth table for a tautology must yield a value of true for ALL combinations of true and false of its variables. I don't understand how all valid arguments can be stated as a tautology. The requirement for validity is the conclusion MUST be true when all the premises are true.
I must be missing something.
Thanx - Charlie

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