Combining Texts

All the ideas for 'Rationality', 'The Concept of Logical Consequence' and 'works'

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11 ideas

2. Reason / A. Nature of Reason / 1. On Reason

6950	You can be rational with undetected or minor inconsistencies [Harman]

2. Reason / A. Nature of Reason / 6. Coherence

6954	A coherent conceptual scheme contains best explanations of most of your beliefs [Harman]

4. Formal Logic / E. Nonclassical Logics / 5. Relevant Logic

8720	A logic is 'relevant' if premise and conclusion are connected, and 'paraconsistent' allows contradictions [Priest,G, by Friend]

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

18812

Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt]

5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=

13344

X follows from sentences K iff every model of K also models X [Tarski]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

13343

A 'model' is a sequence of objects which satisfies a complete set of sentential functions [Tarski]

14. Science / C. Induction / 1. Induction

6955	Enumerative induction is inference to the best explanation [Harman]

14. Science / C. Induction / 3. Limits of Induction

6952	Induction is 'defeasible', since additional information can invalidate it [Harman]

14. Science / C. Induction / 4. Reason in Induction

6953	All reasoning is inductive, and deduction only concerns implication [Harman]

18. Thought / A. Modes of Thought / 5. Rationality / a. Rationality

6951	Ordinary rationality is conservative, starting from where your beliefs currently are [Harman]

19. Language / E. Analyticity / 1. Analytic Propositions

13345

Sentences are 'analytical' if every sequence of objects models them [Tarski]