Chapter 5: Formal and Informal Logic
Chapter 5: Formal and Informal Logic
Chapter 5: Formal and Informal Logic
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Uniform Substitution Instances<br />
From logical forms to propositions<br />
• Given a logical form, any number of arguments may be produced<br />
by uniformly substituting (atomic or molecular) propositions for<br />
propositional variables<br />
From propositions to logical forms<br />
• Given a proposition, a finite number of logical forms may be<br />
produced by uniformly substituting propositional variables for<br />
propositions<br />
ARGUMENT: Critical Thinking, <strong>Logic</strong> <strong>and</strong> the Fallacies <strong>Chapter</strong> 5: <strong>Formal</strong> <strong>and</strong> <strong>Informal</strong> <strong>Logic</strong> 5–8
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