Combining Texts

All the ideas for 'Conditionals', 'The Concept of Logical Consequence' and 'Philosophy of Nature (Encylopedia II)'

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8 ideas

1. Philosophy / E. Nature of Metaphysics / 6. Metaphysics as Conceptual
22077 Metaphysics is the lattice which makes incoming material intelligible [Hegel]
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
14180 Etchemendy says fix the situation and vary the interpretation, or fix interpretations with varying situations [Etchemendy, by Read]
14181 Validity is where either the situation or the interpretation blocks true premises and false conclusion [Etchemendy, by Read]
10. Modality / B. Possibility / 8. Conditionals / a. Conditionals
13768 Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington]
10. Modality / B. Possibility / 8. Conditionals / b. Types of conditional
13770 There are many different conditional mental states, and different conditional speech acts [Edgington]
10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals
13764 Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington]
13765 'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington]
24. Political Theory / C. Ruling a State / 4. Changing the State / c. Revolution
21756 All revolutions result from spirit changing its categories, to achieve a deeper understanding [Hegel]