Ideas from 'On the Philosophy of Logic' by Jennifer Fisher [2008], by Theme Structure
[found in 'On the Philosophy of Logic' by Fisher,Jennifer [Thomson Wadsworth 2008,9780495008880]].
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2. Reason / A. Nature of Reason / 1. On Reason
8952

We reach 'reflective equilibrium' when intuitions and theory completely align

4. Formal Logic / E. Nonclassical Logics / 3. ManyValued Logic
8943

Threevalued logic says excluded middle and noncontradition are not tautologies

4. Formal Logic / E. Nonclassical Logics / 4. Fuzzy Logic
8945

Fuzzy logic has many truth values, ranging in fractions from 0 to 1

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
8951

Classical logic is: excluded middle, noncontradiction, contradictions imply all, disjunctive syllogism

5. Theory of Logic / C. Ontology of Logic / 2. Platonism in Logic
8950

Logic formalizes how we should reason, but it shouldn't determine whether we are realists

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox
8940

Tarski avoids the Liar Paradox, because truth cannot be asserted within the object language

7. Existence / D. Theories of Reality / 9. Vagueness / d. Vagueness, degrees of
8946

We could make our intuitions about heaps precise with a millionvalued logic

9. Objects / B. Unity of Objects / 3. Unity Problems / e. Vague objects
8944

Vagueness can involve components (like baldness), or not (like boredom)

10. Modality / B. Possibility / 1. Possibility
8941

We can't explain 'possibility' in terms of 'possible' worlds

10. Modality / B. Possibility / 8. Conditionals / c. Truthfunction conditionals
8947

If all truths are implied by a falsehood, then notp might imply both q and notq

10. Modality / B. Possibility / 8. Conditionals / d. Nontruthfunction conditionals
8949

In relevance logic, conditionals help information to flow from antecedent to consequent
