Combining Texts

All the ideas for 'Conditionals', 'Commentary on Euclid's 'Elements'' and 'Introduction to Philosophical Papers II'

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8 ideas

7. Existence / C. Structure of Existence / 5. Supervenience / d. Humean supervenience
16210 Humean supervenience says the world is just a vast mosaic of qualities in space-time [Lewis]
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]
14. Science / D. Explanation / 2. Types of Explanation / g. Causal explanations
13165 Geometrical proofs do not show causes, as when we prove a triangle contains two right angles [Proclus]
18. Thought / E. Abstraction / 1. Abstract Thought
9569 The origin of geometry started in sensation, then moved to calculation, and then to reason [Proclus]
26. Natural Theory / D. Laws of Nature / 11. Against Laws of Nature
9426 The world is just a vast mosaic of little matters of local particular fact [Lewis]