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| Logic and Language | |
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| Reasoning | |
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| Basic Logical Concepts | |
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| What Logic Is | |
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| Propositions and Arguments | |
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| Recognizing Arguments | |
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| Arguments and Explanations | |
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| Deductive and Inductive Arguments | |
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| Validity and Truth | |
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| Analyzing Arguments | |
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| Paraphrasing Arguments | |
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| Diagramming Arguments | |
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| Complex Argumentative Passages | |
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| Problems in Reasoning | |
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| Informal Logic | |
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| Language and Definitions | |
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| Language Functions | |
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| Emotive Language, Neutral Language, and Disputes | |
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| Disputes and Ambiguity | |
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| Definitions and Their Uses | |
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| The Structure of Definitions: Extension and Intension | |
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| Definition by Genus and Difference | |
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| Fallacies | |
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| What Is a Fallacy? | |
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| Classification of Fallacies | |
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| Fallacies of Relevance | |
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| Fallacies of Defective Induction | |
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| Fallacies of Presumption | |
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| Fallacies of Ambiguity | |
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| Deduction | |
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| Classical Logic | |
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| Categorical Propositions | |
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| The Theory of Deduction | |
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| Classes and Categorical Propositions | |
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| The Four Kinds of Categorical Propositions | |
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| Quality, Quantity, and Distributions | |
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| The Traditional Square of Opposition | |
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| Further Immediate Inferences | |
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| Existential Import and the Interpretation of Categorical Propositions | |
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| Symbolism and Diagrams for Categorical Propositions | |
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| Categorical Syllogisms | |
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| Standard-Form Categorical Syllogisms | |
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| The Formal Nature of Syllogistic Argument | |
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| Venn Diagram Technique for Testing Syllogisms | |
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| Syllogistic Rules and Syllogistic Fallacies | |
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| Exposition of the Fifteen Valid Forms of the Categorical Syllogism | |
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| Appendix:Deduction of the Fifteen Valid Forms of the Categorical Syllogism | |
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| Syllogisms in Ordinary Language | |
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| Syllogistic Arguments | |
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| Reducing the Number of Terms to Three | |
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| Translating Categorical Propositions into Standard Form | |
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| Uniform Translation | |
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| Enthymemes | |
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| Sorites | |
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| Disjunctive and Hypothetical Syllogisms | |
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| The Dilemma | |
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| Modern Logic | |
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| Symbolic Logic | |
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| Modern Logic and Its Symbolic Language | |
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| The Symbols for Conjunction, Negation, and Disjunction | |
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| Conditional Statements and Material Implication | |
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| Argument Forms and Refutation by Logical Analogy | |
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| The Precise Meaning of �Invalid� and �Valid� | |
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| The Three �Laws of Thought� | |
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| Methods of Deduction | |
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| Quantification Theory | |
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| Induction | |
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| Analogy And Causation | |
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| Analogical Reasoning | |
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| Causal Reasoning | |
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| Science and Probability | |
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| Science and Hypothesis | |
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| Probability | |