Whenever people offer
reasons or evidence for the truth of a statement, they are advancing an argument.
In this part of our logic course, we investigate some of the ways that
logical inferences can be evaluated.
In sum, logic is a study of sorting valid or reliable arguments from
invalid or unreliable ones in accordance with specific rules.
Much of ordinary discourse is not argumentative.
From a logical point of view, the expression of strong feeling is termed emotive discourse,
not argumentative discourse. So the definition of "argument"
in this course is considerably narrower than its lexical definition
Links to Lecture Notes
THE STRUCTURE OF ARGUMENTS
- Philosophy and Logic
The subjects of philosophy and logic are broadly characterized.
- The Nature of Logic
Some of the uses of logic are illustrated, and deductive arguments are
briefly distinguished from inductive arguments.
- The Structure of Arguments
The concept of an argument is discussed together with the related
concepts of premise, conclusion, inference, entailment, proposition, and
The representation of the structure of arguments by means of diagrams
is explained and illustrated.
- Explanations and Nonarguments
Several kinds of nonargumentative discourse are characterized,
illustrated, and distinguished from argumentative discourse.
- Deduction and Induction
Deductive and inductive arguments are characterized and distinguished
in some detail.
- Truth, Validity, and Soundness
The foundation-concepts of deductive logic are explained — truth,
validity, and soundness.
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| Arguments |
Language | Fallacies
Propositions | Syllogisms
Language | Symbolic